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MILL RIVER MA H Failure 01/01/1874 Unknown Unknown MA00000-100 No 139 RE O 40 ft 0.00 MA00000 MILL RIVER ON THE CONNECTICUT RIVER 0 0 MUD POND MA Failure 01/01/1886 Seepage/Internal Erosion Piping MA00000-101 No 7 0.00 MA00000 GREENWATER BROOK 0 0 SOUTH FORK (AKA JOHNSTOWN DAM) PA H Failure 01/01/1889 Hydrologic/Flooding Overtopping PA00000-102 No 2209 $10 million to $25 million RE R 72 ft 0.00 PA00000 LITTLE CONEMAUGH RIVER 0 0 WALNUT GROVE AZ H Failure 01/01/1890 Unknown Spillway Deficiency AZ00000-103 No ER 110 ft 0.00 AZ00000 HASSAYAMPA 0 0 KAUFFMAN RESERVOIR PA H Non-Failure 01/01/1892 Seepage/Internal Erosion Piping PA00691-3199 INCREASING LEAKAGE ABOUT HALFWAY UP THE SLOPE. VALVE OPENED AND SEEPAGE STOPPED. No 0 0 0 0 IN 1896 DAM WAS REBUILT JUST D/S OF OLD DAM WITH CONCRETE CORE WALL & FLATTER SLOPES. L RE S Y 68 ft 413.00 19.00 1896 PA00691 KAUFFMAN RUN 40.7653 -76.2192 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 2 DAYS PA Dam Safety CLEAR LAKE PA S Failure 05/04/1892 Unknown Overtopping PA00175-3185 FAILED DAM ADDED TO TITUSVILLE FLOOD 7 MI DS. FLOOD CAUSED OIL SPILLS & FIRE DISASTER. No 0 Unknown Unknown Other $1 million to $5 million RECONSTRUCTED IN 1905 AS CONCRETE GRAVITY DAM L CNPG R Y 11 ft 782.00 118.00 1855 PA00175 EAST BRANCH OIL CREEK 41.8247 -79.6856 2008 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 11:30:00 PM 3 DAYS Yes PA Dam Safety UPPER KITTANNING PA H Non-Failure 05/20/1894 Hydrologic/Flooding Overtopping Erosion PA00530-3178 OVERTOPPING ERODED DOWNSTREAM SLOPE. GULLEYS FORMED UP TO 10-FT DEEP. No 0 0 DAM WAS REPAIRED AFTER THE FLOOD AND REMAINED IN SERVICE. 0 L RE S Y 45 ft 212.00 12.00 1887 PA00530 BURGOON RUN 40.4969 -78.4789 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 1 DAY Yes PA Dam Safety MELZINGAH NY Failure 01/01/1897 Unknown Unknown NY00000-104 No 7 RE 0.00 NY00000 0 0 AUSTIN TX Failure 04/06/1900 Structural Stability Slope Stability TX00000-105 No 7 0.00 TX00000 0 0 TOM MILLER DAM TX H Non-Failure 04/07/1900 Hydrologic/Flooding Overtopping TX01086-2841 OVERTOPPED L CNPG IHSR Y 85 ft 115404.00 1830.00 1939 TX01086 COLORADO RIVER 30.2941 -97.7864 2005 TCEQ TX DEQ RANDALLS POND RI Failure 03/11/1901 Unknown Spillway Deficiency RI00000-106 No 0.00 RI00000 0 0 UNNAMED TN Failure 03/28/1902 Unknown Spillway Deficiency TN00000-107 No 0.00 TN00000 0 0 UTICA RESERVOIR NY Failure 09/13/1902 Structural Stability Slope Stability NY00000-108 No 0.00 NY00000 0 0 PRARIE FARM OR L Failure 06/14/1903 Unknown Unknown OR00000-110 No 250 F RE F N 8 ft 50.00 0.00 1900 OR00000 PRARIE FARM CREEK 44 -121 FORT PITT PA Failure 07/05/1903 Hydrologic/Flooding Overtopping PA00000-109 No 0.00 PA00000 0 0 OAKFORD PARK PA Failure 07/05/1903 Hydrologic/Flooding Overtopping PA00000-111 No 0.00 PA00000 0 0 GREENLICK PA H Failure 07/17/1904 Seepage/Internal Erosion Piping PA00219-3186 LEAK DISCOVERED IN A.M., D/S RESIDENTS WARNED & TOTAL BREACH FAILURE AT 10PM. No 0 DAM RECONSTRUCTED W/ IMPERVIOUS MATERIAL & MASONRY FACING ON U/S SLOPE 500 L RE S 60 ft 0.00 1901 PA00219 GREEN LICK RUN 40.0618 -79.31 PADEP 10:00:00 PM 1 DAY Yes PA Dam Safety WINSTON RESERVOIR NC Failure 11/02/1904 Unknown Unknown NC00000-112 No 9 OT S 0.00 NC00000 0 0 PENN FOREST PA H Non-Failure 05/13/1905 Seepage/Internal Erosion Sinkhole PA00608-3180 AT INITIAL FILLING, A LARGE 15' DIA. 15' DEEP SINKHOLE DEVELOPED W/POOL 4.5' BELOW SPILLWAY CREST No 0 0 0 0 SINKHOE REPAIRED W /ROCK & EARTH FILL & CONCRETE. GROUTING FAILED. MONITORING W/ PIEZOMETERS. 0 L RCRE S Y 151 ft 27600.00 462.00 1998 PA00608 WILD CREEK 40.9306 -75.5625 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 4 YEARS PA Dam Safety HAUSER MT Failure 04/14/1908 Unknown Unknown MT00000-113 No 0.00 MT00000 0 0 HUMPHREYS LAKE MD Failure 01/01/1909 Unknown Unknown MD00000-198 No 0.00 MD00000 0 0 ASHLEY MA Failure 01/07/1909 Seepage/Internal Erosion Piping MA00000-114 No 0.00 MA00000 0 0 FERGUS FALLS HYDRO DAM MN Failure 09/24/1909 Unknown Unknown MN00000-199 No 0.00 MN00000 0 0 KETNER DAM PA L Failure 08/28/1911 Hydrologic/Flooding Overtopping PA00000-3227 HEAVY RAINS DESTROYED CORE WALL & EMBANKMENT DURING CONSTRUCTION. FLOOD WAVE TO JOHNSONBURG. No 0 0 0 0 Roads REBUILT WITH MODIFICATIONS IN 1912, BREACHED DUE TO POOR CONDITION IN 1977. 250 P RE S 45 ft 0.00 1912 PA00000 JOHNSON RUN 41.3251 -78.3743 PADEP 1 DAY Yes PA Dam Safety BAYLESS PULP & PAPER MILL PA Failure 09/30/1911 Unknown Unknown PA00000-200 No 88 0.00 PA00000 0 0 ANSONIA BRASS & COPPER CO. CT Failure 05/28/1912 Unknown Unknown CT00000-201 No 0.00 CT00000 0 0 BROKAW WI Failure 07/23/1912 Unknown Spillway Deficiency WI00000-202 No 0.00 WI00000 0 0 CITY RESERVOIR TN Failure 11/04/1912 Seepage/Internal Erosion Piping TN00000-203 No 0.00 TN00000 0 0 LYMAN AZ Failure 04/14/1915 Seepage/Internal Erosion Piping AZ00000-204 No 8 $500,000 to $1 million 0.00 AZ00000 LITTLE COLORADO 0 0 TOM MILLER DAM TX H Non-Failure 09/01/1915 Hydrologic/Flooding Overtopping TX01086-2840 OVERTOPPED L CNPG IHSR Y 85 ft 115404.00 1830.00 1939 TX01086 COLORADO RIVER 30.2941 -97.7864 2005 TCEQ TX DEQ LOWER OTAY CA Failure 01/21/1916 Hydrologic/Flooding Overtopping CA00000-206 No 30 0.00 CA00000 0 0 SWEETWATER CA Failure 01/27/1916 Unknown Unknown CA00000-115 No 0.00 CA00000 0 0 SWEETWATER MAIN CA H Failure 01/30/1916 Hydrologic/Flooding Overtopping CA00775-3507 Between mid-January to Jan 30th more than 20 inches of rain fell. 10+ inches fell during the last week of January alone. Then, on January 30, 1916, Sweetwater Dam was overtopped by 3.5 feet when 45,000 cfs flowed into the reservoir. The hybrid earth embankments constructed after the 1895 flood to protect the abutments were washed out. Without the protection, the abutments breached. The North abutment breach was 90 feet long and 45 feet deep. The south abutment breah was 20 feet long and 40 feet deep. 8 Railroads $1 million to $5 million U PG ST Y 112 ft 27689.00 936.00 1888 CA00775 SWEETWATER RIVER 32.6921 -117.008 DWR, SAFETY OF DAMS ASDSO Decade Dam Failures Y WEST BROOK RESERVOIR #3 NY Failure 05/15/1916 Seepage/Internal Erosion Unknown NY00000-116 No 0.00 NY00000 0 0 LOFTY RESERVOIR PA S Non-Failure 06/10/1916 Structural Stability Slope Stability Sliding PA00681-3196 SLOPE FAILURE CRACKS OBSERVED FOLLOWING DRAWDOWN IN PREPARATION FOR REHABILITATION PROJECT No 0 0 0 0 $1 million to $5 million EXTENSIVE SOIL TESTING AND REDESIGN OF THE REHABILITATION PROJECT. L RE S Y 30 ft 431.00 31.00 1897 PA00681 MESSERS RUN 40.8722 -76.045 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 1 YEAR PA Dam Safety UNNAMED NC Failure 07/01/1916 Unknown Unknown NC00000-117 Yes 0.00 NC00000 0 0 JOHN THOMPSONS MILL DAM TN Failure 08/02/1916 Unknown Spillway Deficiency TN00000-118 No 26 0.00 TN00000 BARREN CREEK 0 0 UNNAMED WV Failure 08/09/1916 Unknown Unknown WV00000-119 No 60 0.00 WV00000 0 0 UNNAMED WV Failure 08/09/1916 Unknown Spillway Deficiency WV00000-120 No 60 0.00 WV00000 0 0 UNNAMED WV Failure 08/09/1916 Unknown Spillway Deficiency WV00000-121 No 44 $500,000 to $1 million 0.00 WV00000 0 0 LAKE TOXAWAY NC Failure 08/13/1916 Seepage/Internal Erosion Piping NC00000-122 No 0.00 NC00000 0 0 LINDEN LAKE PA S Non-Failure 02/26/1917 Hydrologic/Flooding Overtopping Insufficient Spillway Capacity PA00000-3229 AFTER HEAVY RAINS, 60' WIDE OVERTOPPING FLOW UP TO 1.5 FOOT DEPTH. No 0 0 0 0 Roads Unknown FAYETTE CO. EMERGENCY MGT. WAS NOTIFIED; CONES SET OUT TO CLOSE ROAD. P RE IR 11 ft 0.00 1955 PA00000 TR YOUGHIOGHENY RIVER 40.0407 -79.4201 PADEP 8:00:00 AM 1 DAY No PA Dam Safety MAMMOTH DAM UT H Failure 06/24/1917 Other Overtopping UT00000-205 Dam overtopped scouring away the downstream shell and toppling of the center concrete wall. 0 UNKNOWN UNKNOWN UNKNOWN Railroads $1 million to $5 million 11000 P RECN I 67 ft 0.00 0 UT00000 GOOSEBERRY CREEK 39.7157 -111.299 YES BOXLEY BURST WA Failure 12/01/1918 Seepage/Internal Erosion Excessive/Increased Seepage WA00000-123 No MS 0.00 WA00000 0 0 SALTVILLE MUCK OR MATHIESON ALAKALI WORKS VA Failure 12/24/1924 Unknown Unknown VA00000-217 No 19 RE T 100 ft 0.00 VA00000 HOLSTON 0 0 SHEFFIELD CA Failure 06/01/1925 Seismic Other CA00000-188 the dam failed by liquefaction, a fact borne out by the following paper:
https://cedb.asce.org/CEDBsearch/record.jsp?dockey=0016249 No HF 25 ft 92.00 0.00 1917 CA00000 0 0 Yes ST. FRANCIS CA H Failure 03/12/1928 Structural Stability Foundation Deficiency CA00000-189 There was poor foundation material and sliding planes on the Left abutment. At the time of the incident there was also concerns with the congolomerate on the right abutment but most experts now belive the failure iniciated on the left. No 600 $5 million to $10 million 38000 S N 205 ft 38000.00 0.00 1926 CA00000 0 0 Yes Damfailures.org, Floodpath by Jon Wilkman CLEAR LAKE PA S Failure 05/23/1928 Hydrologic/Flooding Overtopping PA00175-3184 BREACHED 30 FT WIDE & 7 FT DEEP FROM OVERTOPPING LEFT ABUTMENT. No 1 0 0 0 Roads REPAIRED BREACH AND RAISED EARTHFILL ABUTMENTS L CNPG R Y 11 ft 782.00 118.00 1855 PA00175 EAST BRANCH OIL CREEK 41.8247 -79.6856 2008 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 1 DAY PA Dam Safety EASTWICK RR FILL WA Failure 02/07/1932 Hydrologic/Flooding Overtopping WA00000-190 No 7 0.00 WA00000 0 0 LOUP LOUP WA Failure 04/01/1938 Unknown Unknown WA00000-191 No HF 0.00 WA00000 0 0 DIXIE LAKE DAM TX S Non-Failure 12/23/1939 Hydrologic/Flooding Overtopping TX00329-2837 OVERTOPPED P RE R N 17 ft 1420.00 122.00 1943 TX00329 LITTLE SIXMILE CREEK 32.1281 -94.3657 TCEQ TX DEQ WEWOKA OK Failure 04/13/1945 Unknown Unknown OK00000-192 No 8 80 0.00 OK00000 0 0 LAKE FRYER DAM TX H Non-Failure 05/16/1947 Unknown Spillway Deficiency TX03890-2835 SPWY COLLAPSE L RE R N 40 ft 2792.00 90.00 1939 TX03890 WOLF CREEK 36.2201 -100.64 1957 TCEQ TX DEQ PRARIE FARM OR L Failure 01/01/1948 Unknown Unknown OR00000-193 No 20000 $50 million to $100 million F RE F N 8 ft 50.00 0.00 1900 OR00000 PRARIE FARM CREEK 44 -121 LAKE DAWN WA Failure 02/01/1950 Hydrologic/Flooding Overtopping WA00000-194 No None RE 0.00 WA00000 0 0 VAUX DAMS MT Failure 03/26/1951 Unknown Unknown MT00000-195 No 0.00 MT00000 0 0 NO 1 PA L Failure 07/06/1952 Hydrologic/Flooding Spillway Chute Failure PA01569-3219 TIMBER CRIB SPILLWAY FAILED. 5 FOOT DROP IN THE POOL LEVEL DESTROYED RECREATIONAL USE. No 0 0 0 0 A CAMPGROUND ORGANIZATION REBUILT THE DAM IN 1953 WITH A 72' WIDE CONCRETE SPILLWAY. P RE O NR 8 ft 334.00 0.00 PA01569 TOBYHANNA CREEK 41.1772 -75.4131 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety HARRIS POND RI Failure 01/01/1955 Unknown Unknown RI00000-196 No 1500 RE 0.00 RI00000 BLACKSTONE 0 0 NO 1 PA L Failure 08/20/1955 Hydrologic/Flooding Unknown PA01569-3218 BREACH OF NEWER DAM DURING HURRICANE DIANE Diane No 0 0 0 0 NO FUNDING WAS OBTAINED TO REBUILD THE DAM AS OF 1977. RESIDENTS COMPLAINED TO THE STATE. P RE O NR 8 ft 334.00 0.00 PA01569 TOBYHANNA CREEK 41.1772 -75.4131 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 2:00:00 AM PA Dam Safety ALAMO ARROYO WS SCS SITE 2 DAM TX H Non-Failure 01/01/1960 Seepage/Internal Erosion Piping TX01949-2834 PIPING L RE CI N 48 ft 6144.00 30.00 1960 TX01949 ALAMO ARROYO 31.4051 -105.818 N TX DEQ ELECTRIC LIGHT POND NY Failure 01/01/1960 Unknown Under Investigation NY00000-197 failure No 1 0.00 NY00000 1 1 WACO LAKE TX H Non-Failure 10/10/1961 Structural Stability Sliding TX00016-2832 SLIDING F RE SRC Y 140 ft 969000.00 7270.00 1965 TX00016 BOSQUE RIVER 31.6 -97.2167 N TX DEQ SPAULDING POND, MOHEGAN PARK CT Failure 03/06/1963 Unknown Unknown CT00000-207 No $5 million to $10 million 0.00 CT00000 0 0 LITTLE DEER CREEK UT Failure 06/16/1963 Unknown Unknown UT00000-208 No 1 0.00 UT00000 0 0 TYLER STATE PARK TX Failure 09/12/1963 Unknown Unknown TX00000-216 No 1 0.00 TX00000 0 0 BALDWIN HILLS CA Failure 12/14/1963 Seepage/Internal Erosion Piping CA00000-209 No 5 16500 RE 232 ft 0.00 CA00000 0 0 SWIFT IRRIGATION MT Failure 06/08/1964 Unknown Unknown MT00000-210 No 19 0.00 MT00000 MARIAS R. TRIBUTARY 0 0 LOWER TWO MEDICINE MT Failure 06/08/1964 Unknown Unknown MT00000-211 No 9 0.00 MT00000 0 0 LOWER HELL HOLE CA Failure 12/22/1964 Unknown Unknown CA00000-212 No over $100 million ER 410 ft 0.00 CA00000 RUBICON 0 0 WINDTHORST LAKE DAM TX S Non-Failure 05/01/1965 Seepage/Internal Erosion Piping TX02870-2831 PIPING L RE S Y 32 ft 3268.00 0.00 1964 TX02870 EAST-LITTLE POST OAK CREEK 33.5459 -98.3938 1985 TCEQ TX DEQ FONTENELLE WY H Non-Failure 09/04/1965 Seepage/Internal Erosion Piping WY01389-3506 Fontenelle Dam nearly failed on first filling in 1965. The embankment materials were placed directly over open joints in the right abutment. After a large spring runoff event, seepage from the reservoir worked its way through these joints and into the right abutment of the embankment dam. Massive sloughing occurred and within 12 hours 10,000 cubic yards of material were eroded away. Unknown 0 Other The engineers opened the large outlet works full open lowering the reservoir 4 feet per day. This was the only thing that saved the dam from failing F RE FHRS Y 139 ft 405160.00 8058.00 1963 WY01389 GREEN RIVER 42.0286 -107.867 1989 SEO 7:00 PM 12 Days Yes ASDSO Decade Dam Series RIPS LAKE DAM TX S Non-Failure 09/22/1967 Hydrologic/Flooding Overtopping TX03169-2830 OVERTOPPED P RE S NR 11 ft 106.00 15.00 1968 TX03169 OAK HOLLOW 28.9694 -98.4431 N TX DEQ EAGLE MOUNTAIN DAM TX H Non-Failure 12/01/1967 Structural Stability Slope Stability TX00779-2829 LIQUIFACTION DURING EXCAVATION S RE IS Y 85 ft 680335.00 6160.00 1932 TX00779 WEST FORK TRINITY RIVER 32.8739 -97.461 TCEQ TX DEQ NORTH STAR SAND & GRAVEL DAMS WA Failure 12/01/1967 Hydrologic/Flooding Overtopping WA00000-213 No 40 ft 0.00 WA00000 0 0 LEE LAKE MA Failure 03/24/1968 Unknown Unknown MA00000-214 No 2 20 0.00 MA00000 0 0 LAKE LONDA LYNN DAM TX H Non-Failure 05/06/1969 Hydrologic/Flooding Overtopping TX00034-2826 OVERTOPPED P RE R N 23 ft 905.00 53.00 1966 TX00034 SALLY CREEK 30.5595 -94.8821 2009 TCEQ TX DEQ LAKE DONNA DAM TX L Non-Failure 05/06/1969 Hydrologic/Flooding Overtopping TX00036-2827 OVERTOPPED P RE R NR 21 ft 145.00 5.00 1963 TX00036 TR-WEST FORK DOUBLE BRANCH 30.6864 -94.756 TCEQ TX DEQ LAKE MARK DAM TX L Non-Failure 05/06/1969 Hydrologic/Flooding Overtopping TX00037-2828 OVERTOPPED P RE R NR 23 ft 290.00 10.00 1964 TX00037 TR-WEST FORK DOUBLE BRANCH 30.6749 -94.7424 TCEQ TX DEQ VICTOR BRAUNIG DAM TX H Non-Failure 12/21/1969 Structural Stability Cracking Sliding TX01432-2825 CRACKS AND SLIDES L RE HRO Y 76 ft 32324.00 1350.00 1963 TX01432 ARROYO SECO 29.2461 -98.3645 TCEQ TX DEQ ALAMO ARROYO WS SCS SITE 2 DAM TX H Non-Failure 01/01/1970 Seepage/Internal Erosion Piping TX01949-2824 PIPING L RE CI N 48 ft 6144.00 30.00 1960 TX01949 ALAMO ARROYO 31.4051 -105.818 N TX DEQ PILLAR ROCK WA Failure 01/01/1970 Hydrologic/Flooding Overtopping WA00000-215 No 3 PG 25 ft 0.00 WA00000 0 0 COLEMAN DAM TX H Non-Failure 01/01/1971 Structural Stability Cracking TX02152-2823 SETTLEMENT AND CRACKING L RE ISRO Y 90 ft 91680.00 1886.00 1966 TX02152 JIM NED CREEK 32.0314 -99.4651 TCEQ TX DEQ SAN FERNANDO CA Failure 02/09/1971 Seismic Unknown CA00000-124 Yes 80000 HF 142 ft 0.00 CA00000 0 0 SID WHITE WA Failure 05/01/1971 Seepage/Internal Erosion Piping WA00000-125 No 0.00 WA00000 0 0 CANYON LAKE SD Failure 01/01/1972 Hydrologic/Flooding Overtopping SD00000-128 No 33 $50 million to $100 million RE 20 ft 0.00 SD00000 0 0 ANZALDUAS DIVERSION TX H Non-Failure 02/01/1972 Malfunction of Equipment/Gate Gate/Valve Failure TX07036-2822 GATE FAILURE F CN CI Y 23 ft 16400.00 1287.00 1960 TX07036 RIO GRANDE 26.137 -98.334 N TX DEQ BUFFALO CREEK WV Failure 02/26/1972 Unknown Unknown WV00000-126 No 125 1084 over $100 million 0.00 WV00000 0 0 LAKE O HILLS AK Failure 04/29/1972 Seepage/Internal Erosion Piping AK00000-127 No 1 0.00 AK00000 0 0 BARCROFT VA Failure 06/21/1972 Hydrologic/Flooding Overtopping VA00000-129 No 0.00 VA00000 0 0 BART LAKE DAM TX L Non-Failure 06/13/1973 Hydrologic/Flooding Overtopping TX00121-2819 OVERTOPPED P RE R NR 20 ft 214.00 8.00 1955 TX00121 MCRAE CREEK 30.3715 -95.3387 N TX DEQ MCRAE DAM TX H Non-Failure 06/13/1973 Hydrologic/Flooding Overtopping TX00135-2820 OVERTOPPED P RE R Y 20 ft 305.00 17.00 1960 TX00135 MCRAE CREEK 30.3845 -95.338 TCEQ TX DEQ SPRING LAKE DAM TX H Non-Failure 06/13/1973 Hydrologic/Flooding Overtopping TX00124-2821 OVERTOPPED P RE R Y 23 ft 255.00 14.00 1952 TX00124 TR-CANEY CREEK 30.4049 -95.3824 TCEQ TX DEQ MIKE HORSE MT Failure 01/01/1975 Unknown Unknown MT00000-130 No 0.00 MT00000 0 0 NEW-FOUND CREEK DAM (BEAR WALLOW) NC Failure 02/22/1976 Unknown Unknown NC00000-131 No 4 0.00 NC00000 0 0 TETON ID Failure 06/05/1976 Unknown Unknown ID00000-132 Yes 11 over $100 million 0.00 ID00000 0 0 USBR RIVERWOOD ACRES DAM TX S Non-Failure 04/19/1977 Hydrologic/Flooding Overtopping TX09273-2818 OVERTOPPED P RE R N 13 ft 22.00 0.00 1800 TX09273 TR-COLORADO RIVER 30.1242 -97.3424 N TX DEQ SANDY RUN, 5 OTHERS PA Failure 07/01/1977 Unknown Unknown PA00000-133 No 5 0.00 PA00000 0 0 LAUREL RUN PA Failure 07/01/1977 Unknown Unknown PA00000-134 No 40 25 $5 million to $10 million RE 42 ft 0.00 PA00000 0 0 KELLY BARNES GA H Failure 11/06/1977 Unknown Unknown GA00000-135 There was little maintance at the dam and there had been intense rain for several days. Could have overtopped but it is unknown. No 39 $25 million to $50 million 410 P RE R N 38 ft 410.00 0.00 GA00000 Toccoa Creek 0 0 Y MYRON ISABEL CO Failure 01/01/1978 Seepage/Internal Erosion Piping CO00000-136 No 0.00 CO00000 0 0 MCCARTY LAKE DAM TX S Non-Failure 08/04/1978 Hydrologic/Flooding Overtopping TX03117-2816 OVERTOPPED L RE S Y 50 ft 6696.00 263.00 1942 TX03117 SALT PRONG HUBBARD CREEK 32.6582 -99.3597 1980 TCEQ TX DEQ SWIMMING POOL NY Failure 01/01/1979 Unknown Unknown NY00000-137 No 4 0.00 NY00000 0 0 UNITED NUCLEAR CORP NM Failure 07/01/1979 Unknown Unknown NM00000-138 No 0.00 NM00000 0 0 PROSPECT VALLEY & LORD RESERVOIR DAMS CO Failure 02/10/1980 Unknown Unknown CO00000-139 No 0.00 CO00000 0 0 H & H FEED LOT DAM TX L Non-Failure 09/01/1980 Hydrologic/Flooding Overtopping TX02731-2811 OVERTOPPED P RE O NR 35 ft 300.00 16.00 1960 TX02731 COTTONWOOD CREEK 32.4814 -100.595 N TX DEQ TYRON TAILINGS DAM NO. 3 NM Failure 10/13/1980 Unknown Unknown NM00000-140 No 0.00 NM00000 0 0 LAKE GILEAD DAM TX L Non-Failure 05/16/1981 Unknown Spillway Deficiency TX05092-2810 SPWY FAILURE P RE IR NR 19 ft 1365.00 84.00 1982 TX05092 MILL CREEK 32.763 -95.2558 TCEQ TX DEQ MADRONA RANCH LAKE DAM TX S Non-Failure 06/14/1981 Hydrologic/Flooding Overtopping TX05851-2809 OVERTOPPED P RE R N 30 ft 140.00 0.00 1968 TX05851 RED BLUFF CREEK 29.7406 -98.863 TCEQ TX DEQ OLD MILL DAM TX L Non-Failure 06/17/1981 Unknown Unknown TX03446-2808 COLLAPSED L CN IS NR 15 ft 108.00 18.00 1963 TX03446 NORTH BOSQUE RIVER 31.795 -97.5765 N TX DEQ LAKE PENNINGTON DAM TX L Non-Failure 09/01/1981 Hydrologic/Flooding Overtopping TX00505-2807 OVERTOPPED P RE NR 28 ft 550.00 30.00 1956 TX00505 LOUISVILLE CREEK 31.1743 -95.1855 TCEQ TX DEQ LAKE DE LAFOSSE DAM TX S Non-Failure 10/13/1981 Hydrologic/Flooding Overtopping TX03114-2805 OVERTOPPED P RE R Y 24 ft 1187.00 0.00 1925 TX03114 DRY BRANCH 32.7332 -99.1085 1982 TCEQ TX DEQ COAL WASTE IMPOUNDMENT KY Failure 12/01/1981 Unknown Unknown KY00000-187 No 1 0.00 KY00000 0 0 SPRING LAKE DAM TX H Non-Failure 04/01/1982 Unknown Spillway Deficiency TX00124-2804 SERVICE SPWY P RE R Y 23 ft 255.00 14.00 1952 TX00124 TR-CANEY CREEK 30.4049 -95.3824 TCEQ TX DEQ HONEY GROVE CITY LAKE DAM TX L Non-Failure 05/13/1982 Deterioration or Poor Condition Animal Activity TX00422-2803 BEAVER DEN L RE R NR 23 ft 450.00 37.00 1902 TX00422 TR-HONEY GROVE CREEK 33.6029 -95.9054 TCEQ TX DEQ MEADOWS LAKES EAST LAKE DAM TX H Non-Failure 05/28/1982 Unknown Spillway Deficiency TX05790-2802 SPWY FAILED P RE R N 19 ft 129.00 0.00 1959 TX05790 TR-BIG FOSSIL CREEK 32.8332 -97.2478 TCEQ TX DEQ GRACE LAKE DAM NO 1 TX L Non-Failure 06/01/1982 Unknown Spillway Deficiency TX03192-2801 E.S. FAILED P RE S NR 39 ft 577.00 27.00 1961 TX03192 TR-WEST FORK TRINITY RIVER 33.292 -97.9597 TCEQ TX DEQ CANTON OLD CITY LAKE DAM TX H Non-Failure 12/03/1982 Deterioration or Poor Condition Animal Activity TX04400-2800 ANIMAL BURROWS L RE R Y 18 ft 220.00 17.00 1930 TX04400 TR-DRY CREEK 32.5584 -95.872 1984 TCEQ TX DEQ LAKELAND LAKE DAM TX H Non-Failure 04/12/1983 Structural Stability Sliding TX04778-2799 SLIDE L RE R N 9 ft 192.00 22.00 1925 TX04778 OFF CH-HAGGERTY BRANCH 30.1906 -95.1764 N TX DEQ CADE LAKE NUMBER 3 DAM TX S Non-Failure 03/27/1984 Unknown Spillway Deficiency TX04210-2798 S.S. FAILED L RE R N 20 ft 584.00 0.00 1972 TX04210 SECOND DAVIDSON CREEK 30.5039 -96.7656 TCEQ TX DEQ LEAVITT BRANCH (PA-463) PA H Non-Failure 04/18/1984 Seepage/Internal Erosion Sinkhole PA00814-3221 12' DIA. 3' DEEP SINKHOLE OBSERVED IN DRY DAM FOLLOWING HIGH WATER EVENT No 0 0 0 A BACKHOE INVESTIGATION FOUND MORE VOIDS. DAM WAS BREACHED AND THE EMBANKMENT RECONSTRUCTED. 0 L RE C Y 90 ft 1544.00 0.00 1976 PA00814 LEAVITT BRANCH BRODHEAD CREEK 41.2081 -75.2475 2008 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety MENNO DAM SD H Failure 06/12/1984 Hydrologic/Flooding Overtopping Insufficient Spillway Capacity SD00026-3415 Heavy rainfall on the evening of June 11, 1984 along with high reservoir levels from heavy rain in the days prior caused the dam to overtop and fail. 0 unknown 1 1 Other S RE R Y 53 ft 2050.00 48.00 1935 SD00026 JAMES RIVER TRIBUTARY 43.2617 -97.6167 1996 DENR 7:00 SD Dam Safety BASS HAVEN LAKE DAM TX L Failure 08/17/1984 Unknown Unknown TX05119-2797 BREACHED P RE T NR 30 ft 750.00 35.00 1974 TX05119 TR-COON CREEK 32.0011 -95.9015 1986 TCEQ TX DEQ KERRVILLE PONDING DAM TX S Non-Failure 12/31/1984 Hydrologic/Flooding Overtopping TX04650-2795 OVERTOPPED L REOT ISR Y 21 ft 2499.00 106.00 1980 TX04650 GUADALUPE RIVER 30.0535 -99.165 TCEQ TX DEQ HATCHERY LAKE DAM TX L Non-Failure 11/11/1985 Unknown Spillway Chute Failure TX02948-2794 SPWY COLLAPSE S RE O NR 24 ft 135.00 0.00 1932 TX02948 HARMON CREEK 30.7408 -95.4748 TCEQ TX DEQ BARNEY M DAVIS COOLING RESERVOIR TX L Non-Failure 05/08/1986 Seepage/Internal Erosion Piping TX01551-2793 PIPING P RE O NR 20 ft 11400.00 0.00 1973 TX01551 OFF CH-OSO CREEK 27.6267 -97.3483 TCEQ TX DEQ BEARFOOT LAKE DAM TX H Non-Failure 06/26/1986 Hydrologic/Flooding Overtopping TX03916-2792 OVERTOPPING P RE R N 27 ft 3207.00 0.00 1964 TX03916 MILL CREEK 30.4819 -94.7734 N TX DEQ COMANCHE TRAIL LAKE DAM TX H Non-Failure 08/30/1986 Hydrologic/Flooding Overtopping TX03799-2791 OVERTOPPED L RE R Y 19 ft 520.00 22.00 1914 TX03799 BIG SPRING DRAW 32.2249 -101.471 1988 TCEQ TX DEQ HURST CREEK DAM NO 1 TX L Non-Failure 05/29/1987 Hydrologic/Flooding Overtopping TX06337-2790 OVERTOPPED P RE R NR 24 ft 87.00 0.00 1968 TX06337 HURST CREEK 30.3527 -97.9867 TCEQ TX DEQ LAKE EANES DAM TX S Non-Failure 06/01/1988 Hydrologic/Flooding Overtopping TX03492-2788 OVERTOPPED P RE I Y 35 ft 2215.00 124.00 1926 TX03492 MERCER CREEK 31.8528 -98.6182 1988 TCEQ TX DEQ BEARFOOT LAKE DAM TX H Non-Failure 01/01/1989 Hydrologic/Flooding Overtopping TX03916-2787 OVERTOPPING P RE R N 27 ft 3207.00 0.00 1964 TX03916 MILL CREEK 30.4819 -94.7734 N TX DEQ HARRIS BACK LAKE DAM TX H Non-Failure 03/29/1989 Seepage/Internal Erosion Piping TX04877-2783 INTERNAL EROSION P RE R N 17 ft 214.00 15.00 1900 TX04877 TR-PARKER CREEK 32.5574 -94.3443 2006 TCEQ TX DEQ HIGHWAY LAKE DAM A TX S Non-Failure 03/29/1989 Hydrologic/Flooding Overtopping TX03575-2784 OVERTOPPING P RE R Y 12 ft 75.00 4.00 1925 TX03575 TR-CLARKS CREEK 32.5065 -94.6162 1989 TCEQ TX DEQ RUSK ORE MINE DAM TX L Non-Failure 03/29/1989 Hydrologic/Flooding Overtopping TX00589-2785 OVERTOPPING, DID NOT BREACH L RE R NR 23 ft 680.00 0.00 1953 TX00589 TR-BEANS CREEK 31.8003 -95.1967 TCEQ TX DEQ NIX LAKE DAM TX L Non-Failure 03/29/1989 Hydrologic/Flooding Overtopping TX03546-2786 OVERTOPPING P RE R NR 23 ft 837.00 135.00 1940 TX03546 WASSON BRANCH 32.2498 -94.6545 N TX DEQ CHARLES FROST DAM TX L Non-Failure 05/05/1989 Hydrologic/Flooding Overtopping TX06443-2782 OVERTOPPED P RE NR 25 ft 0.00 1800 TX06443 PATRICK CREEK 32.7257 -97.8913 N TX DEQ RAYMOND BLAIR DAM TX S Non-Failure 05/08/1989 Seepage/Internal Erosion Piping TX06450-2781 INTERNAL EROSION P RE O N 27 ft 80.00 1.00 1986 TX06450 LITTLE SILVER CREEK 32.8258 -97.6353 TCEQ TX DEQ WILLOW LAKE DAM TX L Non-Failure 06/04/1989 Hydrologic/Flooding Overtopping TX03541-2779 OVERTOPPING L RE O NR 19 ft 638.00 46.00 1914 TX03541 SHAWNEE CREEK 32.15 -94.7842 N TX DEQ PINO LAKE DAM TX S Non-Failure 06/15/1989 Hydrologic/Flooding Overtopping TX03480-2778 OVERTOPPING P RE N 33 ft 250.00 22.00 1968 TX03480 TR-SABANA RIVER 32.1681 -98.6749 2005 TCEQ TX DEQ LOST CREEK DAM TX S Non-Failure 01/01/1990 Structural Stability Sliding TX06399-2776 LARGE SLIDE L RE S Y 99 ft 21831.00 0.00 1991 TX06399 LOST CREEK 33.2404 -98.1203 TCEQ TX DEQ CADE LAKE NUMBER 3 DAM TX S Non-Failure 04/25/1990 Unknown Spillway Deficiency TX04210-2773 S.S. FAILED L RE R N 20 ft 584.00 0.00 1972 TX04210 SECOND DAVIDSON CREEK 30.5039 -96.7656 TCEQ TX DEQ NABORS LAKE DAM TX L Non-Failure 04/25/1990 Hydrologic/Flooding Overtopping TX03465-2774 OVERTOPPING P RE R NR 33 ft 595.00 41.00 1947 TX03465 FADE CREEK 32.123 -98.6038 1991 TCEQ TX DEQ WHITE OAK DAM TX L Non-Failure 07/18/1990 Unknown Spillway Erosion/Head Cutting TX03294-2772 E.S. BREACH P RE R NR 21 ft 5600.00 212.00 1970 TX03294 LICK CREEK 33.2873 -95.1451 2003 TCEQ TX DEQ HARALSON LAKE DAM TX L Non-Failure 01/01/1991 Unknown Spillway Deficiency TX00517-2771 SPWY FAILURE P RE P NR 16 ft 130.00 13.00 1957 TX00517 TR-VILLAGE CREEK 30.9274 -95.382 N TX DEQ BUESCHER STATE PARK LAKE DAM TX S Non-Failure 01/28/1991 Seepage/Internal Erosion Piping TX02711-2770 PIPING S RE R N 26 ft 250.00 0.00 1936 TX02711 HUNT BRANCH 30.0421 -97.1584 1993 TCEQ TX DEQ LAKE DOWNS DAM TX H Non-Failure 02/01/1991 Unknown Spillway Deficiency TX00038-2769 SPWY WASHOUT P RE R N 26 ft 65.00 3.00 1963 TX00038 TR-BIG SANDY CREEK 30.6944 -94.74 1983 TCEQ TX DEQ LAKE CENTER DAM TX S Non-Failure 08/04/1991 Unknown Spillway Deficiency TX00309-2768 SPWY COLLAPSE L RE S Y 17 ft 1825.00 93.00 1953 TX00309 MILL CREEK 31.7383 -94.16 1993 TCEQ TX DEQ CADE LAKE NUMBER 3 DAM TX S Non-Failure 12/01/1991 Unknown Spillway Deficiency TX04210-2767 S.S. FAILED L RE R N 20 ft 584.00 0.00 1972 TX04210 SECOND DAVIDSON CREEK 30.5039 -96.7656 TCEQ TX DEQ JDM LAKE DAM TX L Non-Failure 01/10/1992 Deterioration or Poor Condition Spillway Pipe Failure TX00171-2766 CONDUIT HOLE P RE RP NR 30 ft 1500.00 88.00 1953 TX00171 WOLF CREEK 32.0231 -95.7178 2012 TCEQ TX DEQ SPRING LAKE DAM TX H Non-Failure 10/09/1992 Unknown Spillway Deficiency TX00124-2765 SERVICE SPWY P RE R Y 23 ft 255.00 14.00 1952 TX00124 TR-CANEY CREEK 30.4049 -95.3824 TCEQ TX DEQ BLACKBURN LAKE DAM TX L Non-Failure 01/01/1993 Unknown Spillway Deficiency TX00970-2764 SPWY FAILURE P RE R NR 18 ft 137.00 12.00 1950 TX00970 CONNER SPRING BRANCH 31.3741 -94.8517 TCEQ TX DEQ LAKE ROMAN DAM TX L Non-Failure 06/20/1993 Hydrologic/Flooding Overtopping TX03528-2760 OVERTOPPING P RE P NR 23 ft 300.00 26.00 1935 TX03528 TR-BEARD BRANCH 32.1947 -94.6472 TCEQ TX DEQ PIPES DAM NO 1 TX S Non-Failure 06/20/1993 Hydrologic/Flooding Overtopping TX09292-2761 OVERTOPPING P RE P N 17 ft 30.00 4.00 1953 TX09292 TR-BEANS CREEK 31.8054 -95.1914 TCEQ TX DEQ RUSK ORE MINE DAM TX L Non-Failure 06/20/1993 Hydrologic/Flooding Overtopping TX00589-2762 OVERTOPPING, DID NOT BREACH L RE R NR 23 ft 680.00 0.00 1953 TX00589 TR-BEANS CREEK 31.8003 -95.1967 TCEQ TX DEQ LAKE MARY DAM TX L Non-Failure 06/21/1993 Structural Stability Erosion TX04862-2759 EROSION D/S SLP P RE R NR 28 ft 370.00 21.00 1945 TX04862 RUCKER BRANCH 31.6945 -95.5461 TCEQ TX DEQ ARROWHEAD LAKE PA H Failure 04/26/1994 Seepage/Internal Erosion Piping PA00780-3220 A "BLOWOUT" UNDER THE CENTER OF OGEE WEIR WITH RELEASE OF A LARGE VOLUME OF WATER No 0 0 0 0 $100,000 to $500,000 COFFERDAM CONSTRUCTED; A 20' BOTTOM WIDTH BREACH CHANNEL EXCAVATED TO DRAIN BY MAY 11 P RE R Y 18 ft 2344.00 218.00 1954 PA00780 TROUT CREEK 41.1536 -75.5775 2002 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety FISH POND DAM PA L Failure 04/28/1994 Seepage/Internal Erosion Erosion PA00859-3183 20'x10'x6' HOLE ERODED AROUND COLLAPSED INLET BOX & POND ELEVATION DROPPED 5 FT. Yes 0 0 1 0 NONE Unknown THE DAM WAS BREACHED AND REBUILT UPSTREAM, CREATING A SMALLER LAKE. P RE R 39 ft 0.00 1975 PA00859 TRIB. OF ROARING CK. 40.5436 -76.2218 PADEP 1 DAY Yes PA Dam Safety PENN FOREST PA H Non-Failure 07/01/1994 Seepage/Internal Erosion Excessive/Increased Seepage PA00608-3181 PIEZOMETER READINGS SUDDENLY DECLINED INDICATING INCREASED SEEPAGE Yes 0 0 0 0 None 24-HR SURVEILLANCE & 2/FT PER DAY DRAWDOWN. REPLACED WITH RCC DAM, COMPLETED IN 1998. L RCRE S Y 151 ft 27600.00 462.00 1998 PA00608 WILD CREEK 40.9306 -75.5625 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety BEARFOOT LAKE DAM TX H Non-Failure 10/17/1994 Unknown Spillway Erosion/Head Cutting TX03916-2755 E.S. BREACH P RE R N 27 ft 3207.00 0.00 1964 TX03916 MILL CREEK 30.4819 -94.7734 N TX DEQ CADE LAKE NUMBER 3 DAM TX S Non-Failure 10/17/1994 Unknown Spillway Deficiency TX04210-2756 S.S. FAILED L RE R N 20 ft 584.00 0.00 1972 TX04210 SECOND DAVIDSON CREEK 30.5039 -96.7656 TCEQ TX DEQ LAKE TINKLE DAM TX L Non-Failure 10/17/1994 Unknown Spillway Erosion/Head Cutting TX03876-2757 E.S. FAILED P RE R NR 20 ft 280.00 35.00 1949 TX03876 TR-WANDERS CREEK 31.7697 -94.4845 TCEQ TX DEQ RANNEFELD DAM TX S Non-Failure 10/17/1994 Seepage/Internal Erosion Piping TX06922-2758 PIPING AT S.S. P RE Y 16 ft 115.00 7.00 1994 TX06922 TR-DECKER BRANCH 30.1497 -95.6966 1995 TCEQ TX DEQ CONOWINGO MD H Non-Failure 01/19/1996 Hydrologic/Flooding High Reservoir Level Debris Clogging MD00097-3508 Difficult operation due to rapid runoff (rain on snow) and ice jams. Yes EAP activated for the first time in 60 years of operation since reservoir level couldn't be controlled. U CNPG HRS Y 94 ft 310000.00 8563.00 1928 MD00097 SUSQUEHANNA RIVER 39.661 -76.1735 1978 MD DAM SAFETY Yes ASDSO Decade Dam Series ROBERTS TANK DAM TX L Non-Failure 07/14/1996 Seepage/Internal Erosion Piping TX01961-2754 INTERNAL EROSION P RE C NR 20 ft 560.00 0.00 1938 TX01961 SAN FELIPE ARROYO 31.5887 -106.107 N TX DEQ BIG LAKE DAM TX S Non-Failure 09/27/1996 Hydrologic/Flooding Overtopping TX03753-2744 OVERTOPPING P RE ISR Y 21 ft 357.00 22.00 1949 TX03753 TR-MAGNUS BRANCH 30.6938 -94.423 1997 TCEQ TX DEQ BOYKIN LAKE DAM TX S Non-Failure 09/27/1996 Hydrologic/Flooding Overtopping TX03751-2745 OVERTOPPING P RE IR NR 15 ft 195.00 0.00 1976 TX03751 MANGUS BRANCH 30.7212 -94.4486 TCEQ TX DEQ EAST LAKE DAM TX S Non-Failure 09/27/1996 Hydrologic/Flooding Overtopping TX03754-2746 OVERTOPPING P RE ISR Y 22 ft 327.00 19.00 1949 TX03754 TR-MAGNUS BRANCH 30.6995 -94.4207 1997 TCEQ TX DEQ ELECTRO LAKE DAM TX S Non-Failure 09/27/1996 Hydrologic/Flooding Overtopping TX03762-2747 OVERTOPPING P RE R Y 12 ft 50.00 9.00 1927 TX03762 MAGNUS BRANCH 30.7266 -94.448 TCEQ TX DEQ LAKE CHARMAINE DAM TX L Non-Failure 09/27/1996 Hydrologic/Flooding Overtopping TX03755-2748 OVERTOPPING L RE R Y 24 ft 700.00 88.00 1965 TX03755 MAGNUS BRANCH 30.6738 -94.4014 2004 TCEQ TX DEQ LAKE GALAHAD DAM TX S Non-Failure 09/27/1996 Hydrologic/Flooding Overtopping TX03757-2749 OVERTOPPING L RE R Y 11 ft 730.00 0.00 1958 TX03757 MAGNUS BRANCH 30.6745 -94.4206 2009 TCEQ TX DEQ SUTTON LAKE DAM TX S Non-Failure 09/27/1996 Hydrologic/Flooding Overtopping TX03763-2750 OVERTOPPING P RE R N 13 ft 210.00 41.00 1915 TX03763 MAGNUS BRANCH 30.7031 -94.4475 2000 TCEQ TX DEQ TWIN LAKES DAM TX S Non-Failure 09/27/1996 Hydrologic/Flooding Overtopping TX03766-2751 OVERTOPPING P RE S NR 10 ft 125.00 25.00 1915 TX03766 MANGUS BRANCH 30.7147 -94.4514 TCEQ TX DEQ HEARN DAM TX S Non-Failure 09/27/1996 Hydrologic/Flooding Overtopping TX09407-2752 OVERTOPPING P RE R Y 17 ft 68.00 0.00 1800 TX09407 MAGNUS BRANCH 30.7407 -94.4424 TCEQ TX DEQ WEST LAKE DAM TX S Non-Failure 09/27/1996 Hydrologic/Flooding Overtopping TX03752-2753 OVERTOPPING P RE ISR Y 24 ft 360.00 20.00 1949 TX03752 TR-MAGNUS BRANCH 30.7002 -94.426 1997 TCEQ TX DEQ CASA MONTE DAM TX L Non-Failure 01/01/1997 Hydrologic/Flooding Overtopping TX07035-2742 OVRTPG/UNDRMNG P RE NR 15 ft 334.00 56.00 1993 TX07035 NUECES RIVER 28.6057 -99.7697 N TX DEQ HOLLAND DAM SITE A TX L Non-Failure 01/01/1997 Structural Stability Cracking TX02021-2743 FRACTURED L CB I NR 13 ft 700.00 0.00 1911 TX02021 NUECES RIVER 28.3016 -99.1397 N TX DEQ JAN LAND COMPANY LAKE NO 1 DAM TX L Non-Failure 10/17/1998 Hydrologic/Flooding Overtopping TX01580-2741 OVERTOPPING P RE R NR 20 ft 206.00 13.00 1967 TX01580 TR-BRUSHY CREEK 30.0095 -97.7982 N TX DEQ LAKE DONNA DAM TX L Non-Failure 04/03/1999 Hydrologic/Flooding Overtopping TX00036-2739 OVERTOPPING P RE R NR 21 ft 145.00 5.00 1963 TX00036 TR-WEST FORK DOUBLE BRANCH 30.6864 -94.756 TCEQ TX DEQ LAKE JOBE DAM TX L Non-Failure 04/03/1999 Hydrologic/Flooding Overtopping TX04237-2740 OVERTOPPING P RE RP NR 12 ft 63.00 8.00 1963 TX04237 TR-CHOATES CREEK 30.7087 -94.8888 N TX DEQ MOSS CREEK LAKE DAM TX H Non-Failure 02/23/2000 Unknown Spillway Deficiency TX03798-2737 SPWY FAILURE L RE SR Y 67 ft 5700.00 146.00 1939 TX03798 MOSS CREEK TRIBUTARY TO BEALS CREEK 32.2436 -101.311 TCEQ TX DEQ POWELL LAKE DAM TX L Non-Failure 02/23/2000 Hydrologic/Flooding Overtopping TX03797-2738 OVERTOPPING L RE SP NR 35 ft 2988.00 0.00 1939 TX03797 POWELL CREEK 32.2093 -101.269 TCEQ TX DEQ CAMP LA JUNTA DAM TX S Non-Failure 05/01/2000 Hydrologic/Flooding Overtopping TX09244-2736 OVERTOPPING P CNRE R Y 12 ft 25.00 3.00 1978 TX09244 SOUTH FORK GUADALUPE RIVER 30.0679 -99.3349 2005 TCEQ TX DEQ JC WEBB DAM TX L Non-Failure 07/05/2002 Hydrologic/Flooding Overtopping TX04697-2735 OVERTOPPING P RE P NR 19 ft 53.00 6.00 1967 TX04697 TR-LEON CREEK 29.7143 -98.6722 TCEQ TX DEQ DEAL ISLAND WILDLIFE DAM MD Failure 09/01/2003 Hydrologic/Flooding Unknown MD00215-3095 4500 linear feet of embankment partially breached during Hurricane Isabel Isabel No RE 4 ft 1000.00 0.00 MD00215 38.1717 -75.8933 MD DAM SAFETY MDE Dam Safety Program ST CLAIR FARM POND MD S Non-Failure 09/23/2003 Hydrologic/Flooding Overtopping MD00130-3093 Partial failure. Dam overtopped by about 1ft during 4-5" rainfall on Sept 22-23, 2003. Owner observed 4ft dia sinkhole in crest & significant flow along CMP spillway pipe at top of dam. No P RE R Y 18 ft 64.00 8.00 1968 MD00130 CHURCH BRANCH, TR-BUSH CREEK 39.3417 -77.2245 1968 MD DAM SAFETY MDE Dam Safety Program LAKE CHARMAINE DAM TX L Non-Failure 03/14/2004 Seepage/Internal Erosion Piping TX03755-2734 PIPING L RE R Y 24 ft 700.00 88.00 1965 TX03755 MAGNUS BRANCH 30.6738 -94.4014 2004 TCEQ TX DEQ COMANCHE CREEK DAM TX H Non-Failure 04/04/2004 Hydrologic/Flooding Overtopping TX02127-2733 OVERTOPPING, DID NOT BREACH L RE I N 22 ft 1113.00 100.00 1955 TX02127 COMANCHE CREEK 30.8747 -102.878 TCEQ TX DEQ CALLAWAY DAM TX L Non-Failure 05/13/2004 Hydrologic/Flooding Overtopping TX02133-2731 OVERTOPPING P RE R NR 20 ft 298.20 25.00 1961 TX02133 TR-LITTLE PIN OAK CREEK 30.9199 -96.5468 2006 TCEQ TX DEQ MCGUIRE LAKE DAM TX L Non-Failure 05/13/2004 Hydrologic/Flooding Overtopping TX02134-2732 OVERTOPPING P RE R NR 15 ft 360.00 38.00 1961 TX02134 LITTLE PIN OAK CREEK 30.9151 -96.5518 N TX DEQ DUTCH FORK PA H Non-Failure 09/17/2004 Hydrologic/Flooding Spillway Chute Failure PA00490-3208 MORE THAN 6-INCHES RAIN FROM HURRICANE IVAN UNDERMINED CONCRETE SPILLWAY SLABS Ivan No 0 0 THE RESERVOIR WAS DRAINED. FUNDING AND RECONSTRUCTION THE DAM TOOK 8 YEARS S RE RS Y 42 ft 1850.00 91.00 1959 PA00490 DUTCH FORK BUFFALO CREEK 40.1458 -80.4675 2012 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 8 YEARS Yes PA Dam Safety LAKE POCO DAM PA S Non-Failure 09/17/2004 Hydrologic/Flooding Overtopping Erosion Sinkhole PA01807-3192 HURRICANE IVAN OVERTOPPING SEVERELY ERODED DOWNSTREAM SLOPE & LARGE SINKHOLES DEVELOPED Ivan No 0 0 OWNER DECIDED NOT TO REPAIR; A BREACH PLAN WAS SUBMITTED, APPROVED AND COMPLETED. 0 P RE 13 ft 0.00 PA01807 TR JACOBY CREEK 40.5434 -75.0803 PADEP 1 DAY PA Dam Safety LAKE JENKINS MD L Non-Failure 11/19/2004 Hydrologic/Flooding Overtopping MD00153-3090 Dam severely damaged due to overtopping flows displacing masonry units. No S VAMS R NR 35 ft 43.00 3.00 1936 MD00153 POTOMAC RIVER-TR 39.6374 -78.3048 1936 MD DAM SAFETY MDE Dam Safety Program RYERSON STATION PA H Non-Failure 06/28/2005 Seepage/Internal Erosion Cracking Excessive/Increased Seepage PA00193-3216 NORMAL INSPECTION SHOWED CRACKING AND SEEPAGE POSSIBLY RELATED TO NEARBY UNDERGROUND MINING Yes 0 1 Other $25 million to $50 million DAM WAS DRAWN DOWN 10 FEET AND EVENTUALLY BREACHED. S CNPG R N 42 ft 3500.00 62.00 1960 PA00193 NORTH FORK DUNKARD FORK 39.89 -80.4494 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety JOHN MAY DAM NO 2 TX S Non-Failure 07/01/2005 Seepage/Internal Erosion Piping Animal Activity TX06389-2730 PIPING, ANIMAL BURROWS P RE N 15 ft 66.00 11.00 1945 TX06389 TR-TANKERSLEY CREEK 33.1813 -95.0011 TCEQ TX DEQ KA LOKO DAM HI H Failure 03/14/2006 Manmade Action Other Overtopping HI00000-3585 24 days into period of heavy rain, dam breaches, apparently due to ~2’ max overtopping near former spillway (no spillway found after breach), flood depth ~10’ to 30’, causing 7 fatalities (including pregnant woman) ~16 min after breach 7 P RE I 42 ft 0.00 1890 HI00000 0 0 1912 Y GRANDE VIEW FARMS COMMUNITY POND MD S Non-Failure 03/29/2006 Deterioration or Poor Condition Spillway Pipe Failure Sinkhole MD00172-3094 Owners engineer advises that CMP spillway has failed.10ft sinkhole in d.s. slope over pipe, signif leakage along outside of pipe.Riser is deteriorated. No P RE R Y 22 ft 76.00 8.00 1969 MD00172 BROAD CREEK-TR 39.6826 -76.3531 2008 MD DAM SAFETY MDE Dam Safety Program GALESTOWN MILLPOND MD L Failure 06/25/2006 Hydrologic/Flooding Overtopping MD00124-3089 Dam breached in two locations following 10-15 inches of rain in 12 hours. Partially attributed to debris blocking spilllway. No L RE RI NR 9 ft 228.00 44.00 1972 MD00124 GALES CREEK 38.5676 -75.7135 2008 MD DAM SAFETY MDE Dam Safety Program MILL CREEK DAM MD L Failure 06/25/2006 Hydrologic/Flooding Unknown MD00214-3092 Breached during rain event No P RE RI NR 11 ft 78.00 11.00 1930 MD00214 MILL CREEK 38.5947 -75.8272 1999 MD DAM SAFETY MDE Dam Safety Program LOWER ALFORD LAKE PA H Non-Failure 06/26/2006 Hydrologic/Flooding Overtopping Erosion PA00053-3206 OVERTOPPING OF STONE MASONRY DAM RESULTED IN EROSION AT THE TOE. No 0 0 AN EMERGENCY PERMIT WAS ISSUED FOR THE REPAIRS, WHICH WERE TO BEGIN IN SEPTEMBER 2006. P MSREST R Y 15 ft 315.00 34.00 1919 PA00053 MARTINS CREEK 41.8069 -75.7742 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 3 DAYS PA Dam Safety BIG ELK LAKE PA S Non-Failure 06/26/2006 Hydrologic/Flooding Overtopping Erosion PA00056-3204 OVERTOPPING OF DAM DURING EXTREME RAINFALL CAUSED "SCOUR OR SINKHOLE" IN TOP OF DAM Yes 0 15 6 0 AN EMERGENCY PERMIT WAS ISSUED TO REPAIR THE DAM. P MSREST RS Y 12 ft 740.00 79.00 1860 PA00056 ELK LAKE STREAM 41.7528 -75.9547 2006 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 3 DAYS PA Dam Safety PURDY (STUMP POND) PA L Failure 06/26/2006 Hydrologic/Flooding Spillway Chute Failure PA00063-3203 PARTIAL BREACHING OF THE STONE MASONRY SPILLWAY, LOWERING NORMAL POOL APPROXIMATELY 6 INCHES. 0 0 PA FISH & BOAT ASKED ABOUT REPAIRS BUT SENT IN NO PLANS FOR REQUIRED AUTHORIZATION. S MSRE R NR 7 ft 62.00 12.00 1919 PA00063 SALT LICK CREEK 41.8617 -75.6667 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 3 DAYS No PA Dam Safety BRUSHVILLE LAKE PA S Failure 06/26/2006 Hydrologic/Flooding Overtopping PA00000-3235 STONE MASONRY EARTHFILL DAM OVERTOPPED AND FAILED; FULLY BREACHED. No 0 0 EMERGENCY PERMIT ISSUED TO STABILIZE THE BREACHED SECTION. PERMIT APP. IN 2008 TO REBUILD DAM. P STMSRE R 15 ft 0.00 PA00000 LEWIS CREEK 41.5454 -75.3754 PADEP 3 DAYS PA Dam Safety CARPENTER LAKE PA L Non-Failure 06/26/2006 Hydrologic/Flooding Overtopping Erosion PA00000-3236 OVERTOPPING RESULTED IN EROSION OF THE DOWNSTREAM FACE. 0 0 EMERGENCY PERMIT TO REPAIR EMBANKMENT WITH SPECIAL CONDITON TO SUBMIT APP FOR REHABILITATION. P REST P 12 ft 0.00 PA00000 TR MARTINS CREEK 41.42 -75.4518 PADEP 3 DAYS PA Dam Safety ELBOW LAKE PA L Failure 06/26/2006 Hydrologic/Flooding Overtopping PA00000-3237 DAM WAS FULLY BREACHED BY OVERTOPPING 0 0 EMERGENCY PERMIT WAS ISSUED TO STABILIZE THE BREACH SECTION. 150 P RE R 11 ft 0.00 PA00000 BEAVER CREEK 41.5226 -75.4716 PADEP 3 DAYS PA Dam Safety MORELLI PA L Non-Failure 06/26/2006 Hydrologic/Flooding Overtopping PA00000-3238 DAM OVERTOPPED AND THERE WAS MAJOR DAMAGE. 0 0 EMERGENCY PERMIT ISSUED TO BREACH UNTIL OWNER DECIDES FUTURE OF DAM. P RE R 15 ft 0.00 1969 PA00000 TR SUSQUEHANNA RIVER 41.5531 -75.4649 PADEP 3 DAYS PA Dam Safety GILLESPIES POND PA S Failure 06/26/2006 Hydrologic/Flooding Overtopping PA00000-3239 THE DAM SUFFERED MAJOR DAMAGE AND WAS PARTIALLY BREACHED BY EXCESSIVE RAINFALL EVENT. No 0 0 EMERGENCY PERMIT WAS ISSUED TO STABILIZE THE PARTIAL BREACH SECTION. P STRE R 10 ft 0.00 PA00000 MEYLERT CREEK 41.5043 -75.4333 PADEP 3 DAYS PA Dam Safety LAKE WANAMIE PA H Non-Failure 06/26/2006 Hydrologic/Flooding Erosion PA00552-3190 DAM DID NOT OVERTOP DURING EXTREME RAINFALL, BUT EXCESSIVE EROSION DEVELOPED. No 0 0 A DAM REMOVAL PLAN HAD BEEN IN PROCESS. AN EMERGENCY PERMIT WAS ISSUED TO BREACH. P REMS R 26 ft 0.00 1850 PA00552 WANAMIE RUN 41.1006 -76.0124 PADEP 3 DAYS PA Dam Safety LAKE NEEDWOOD MD H Non-Failure 06/27/2006 Seepage/Internal Erosion High Reservoir Level Excessive/Increased Seepage MD00046-3085 Heavy rain pushed reservoir to record level. Heavy seepage on downstream slope near groin resulted in emergency drain/filter construction. Yes L RE RC Y 65 ft 7023.00 74.00 1965 MD00046 ROCK CREEK 39.114 -77.1295 2007 MD DAM SAFETY MDE Dam Safety Program HUNTSVILLE FILTER PA L Failure 06/27/2006 Hydrologic/Flooding Piping PA00000-3232 DURING EXTREME RAINFALL, PIPING HOLE DEVELOPED UNDER THE STRUCTURE. 0 0 AN EMERGENCY PERMIT WAS ISSUED TO REMOVE THE DAM. P RE O 13 ft 0.00 PA00000 HUNTSVILLE CREEK 41.1754 -75.5554 PADEP 3 DAYS PA Dam Safety HUNTSVILLE INTAKE PA L Failure 06/28/2006 Hydrologic/Flooding Overtopping PA00000-3233 EXTREME RAINFALL WITH OVERTOPPING BREACHED DAM IN NATURAL MATERIAL ON THE RIGHT ABUTMENT. 0 0 EMERGENCY PERMITS WERE ISSUED TO (1) STABILIZE DAMAGE AND (2) REMOVE THE DAM. P STMS O 13 ft 0.00 PA00000 HUNTSVILLE CREEK 41.1754 -75.5542 PADEP 3 DAYS PA Dam Safety FAIRCHILD PA L Non-Failure 06/29/2006 Hydrologic/Flooding Overtopping Erosion PA00000-3234 OVERTOPPING DURING EXTREME RAINFALL CAUSED DAMAGE TO THE DOWNSTREAM SLOPE. 0 0 P RE PG 10 ft 0.00 PA00000 TR NEWPORT CREEK 41.1024 -76.003 PADEP 3 DAYS PA Dam Safety DOGWOOD LAKE DAM TX L Non-Failure 11/01/2006 Unknown Spillway Deficiency TX00029-2729 S.S. FAILED, DID NOT BREACH P RE R NR 32 ft 209.00 13.00 1965 TX00029 TR-CHOATES CREEK 30.725 -94.8771 2007 TCEQ TX DEQ LAKE HANSON SD L Failure 05/05/2007 Hydrologic/Flooding Spillway Erosion/Head Cutting SD00691-3416 Approximately 8 to 10 inches of precipitation fell over a large portion of the watershed and caused operation of the earthen secondary spillway which headcut back to the reservoir. No 0 unknown unknown unknown S RE R NR 24 ft 340.00 0.00 1932 SD00691 TR-JAMES 43.625 -97.805 1996 DENR SD Dam Safety PECKS POND PA H Non-Failure 05/30/2007 Seepage/Internal Erosion Sinkhole PA00754-3194 A SINKHOLE ON THE CREST, 1' LONG X 6' WIDE X 8' DEEP, FOUND DURING DEP ANNUAL INSPECTION No 0 0 0 0 NONE FOLLOW-UP INSPECTION FOUND NO SEEPAGE, SINKHOLE WAS FILLED & MONITORED. NO FURTHER PROBLEM. S CNMSRE R Y 7 ft 2067.00 420.00 1906 PA00754 BUSHKILL CREEK 41.2808 -75.0869 2001 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION Yes PA Dam Safety CHACON DAM TX H Non-Failure 06/18/2007 Unknown Spillway Deficiency TX01783-2728 S.S. FAILED L RE I N 15 ft 2312.00 107.00 1912 TX01783 CHACON CREEK 29.2366 -98.8739 N TX DEQ GABRIELS OVERLOOK DAM TX H Non-Failure 06/28/2007 Hydrologic/Flooding Overtopping TX07254-2727 OVERTOPPING, DID NOT BREACH P RE Y 25 ft 114.00 11.00 1964 TX07254 TRIBUTARY OF SAN GABRIEL RIVER 30.6195 -97.8003 TCEQ TX DEQ HIGHLAND CLUB DAM TX L Non-Failure 07/01/2007 Hydrologic/Flooding Overtopping TX03995-2724 OVERTOPPING P RE R NR 17 ft 412.00 50.00 1919 TX03995 TR-ARTHUR REEVES BRANCH 32.9408 -94.9858 2007 TCEQ TX DEQ LAKE O THE WOODS DAM TX L Non-Failure 07/01/2007 Hydrologic/Flooding Overtopping TX04240-2725 OVERTOPPING P RE R NR 16 ft 191.00 12.00 1957 TX04240 HIGHLAND POND BRANCH 32.6475 -95.2786 2008 N TX DEQ MEADOW WOOD LAKE NO 3 DAM TX S Non-Failure 07/01/2007 Seepage/Internal Erosion Piping TX06890-2726 PIPING P RE R Y 16 ft 223.00 9.00 1950 TX06890 TR-BACHELOR CREEK 32.6789 -96.3036 2008 TCEQ TX DEQ PESSINK LAKE DAM TX H Non-Failure 07/08/2007 Hydrologic/Flooding Overtopping TX07255-2723 OVERTOPPING, DID NOT BREACH P RE R Y 18 ft 50.00 7.00 1800 TX07255 TR-RODDY BRANCH 32.2065 -95.2822 TCEQ TX DEQ NEAR KIM LAKE DAM TX S Non-Failure 07/18/2007 Unknown Spillway Deficiency TX00103-2722 S.S. FAILED, DID NOT BREACH P RE R Y 19 ft 293.00 18.00 1963 TX00103 TR-LAKE CREEK 30.2923 -95.7233 2010 TCEQ TX DEQ ANDERSON-RAINES DAM TX L Non-Failure 08/03/2007 Unknown Spillway Deficiency TX07259-2721 S.S. FAILED, DID NOT BREACH P RE NR 20 ft 134.00 5.00 1987 TX07259 TR-DRY HOLLOW 30.9145 -97.1999 TCEQ TX DEQ ROCKVIEW RESERVOIR PA H Non-Failure 10/01/2007 Seepage/Internal Erosion Excessive/Increased Seepage PA00472-3182 THERE WAS AN INCREASE IN SEEPAGE FLOW AT THE RIGHT WALL OF THE STILLING BASIN. No 0 0 RESERVOIR WAS DRAWN DOWN BY 15 FEET AND THE SEEP WAS TESTED TO DETERMINE ITS SOURCE. S CNPG S Y 53 ft 50.00 2.00 PA00472 MCBRIDES RUN 40.8331 -77.7556 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 10 MONTHS Yes PA Dam Safety BULL RUN PA H Non-Failure 12/28/2007 Malfunction of Equipment/Gate Debris Clogging PA00463-3212 THE TRASH RACK AND OUTLET PIPE WAS PARTIALLY CLOGGED AND DRY DAM WAS NOT DRAINING. No 0 0 WATER LEVEL WAS 9 FT ABOVE OUTLET PIPE. CITY RENTED PUMP TO DRAW DOWN WATER & CLEAR TRASH RACK. L RE C Y 44 ft 383.00 20.00 1934 PA00463 BULL RUN 40.3478 -79.6056 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety RHINES RESERVOIR DAM TX L Non-Failure 01/01/2008 Seepage/Internal Erosion Piping TX02803-2720 PIPING P RE S NR 22 ft 2949.00 300.00 1948 TX02803 NECHES RIVER 32.4961 -95.6764 2010 TCEQ TX DEQ CUSHMAN WI Failure 01/01/2008 Hydrologic/Flooding Overtopping WI00000-181 No RE 0.00 WI00000 0 0 CARLIN WI Failure 01/01/2008 Hydrologic/Flooding Overtopping WI00000-182 No 0.00 WI00000 0 0 FIGOR WI Failure 01/01/2008 Hydrologic/Flooding Overtopping WI00000-183 No RE 0.00 WI00000 0 0 WYOCENA WI Failure 01/01/2008 Hydrologic/Flooding Overtopping WI00000-184 No RE 0.00 WI00000 0 0 LAKE DELTON WI Failure 01/01/2008 Unknown Unknown WI00000-185 No 0.00 WI00000 0 0 FALLS RUN DAM WV U Failure 01/01/2008 Unknown Unknown WV04932-179 No P RE O N 31 ft 16.10 0.00 WV04932 TR-OF TYGART VALLEY RV 39.4161 -80.1611 NON-JURISDICTIONAL DAM IA Failure 01/01/2008 Seepage/Internal Erosion Piping IA00000-149 No 0.00 IA00000 0 0 LOWER WILDWOOD LAKE IN Failure 01/01/2008 Unknown Unknown IN00000-144 No 0.00 IN00000 0 0 SAVAGE RIVER MD Failure 01/01/2008 Unknown Unknown MD00000-150 No 0.00 MD00000 SAVAGE 0 0 GREENBRIER STATE PARK MD Failure 01/01/2008 Seepage/Internal Erosion Unknown MD00000-151 No 0.00 MD00000 0 0 DEEP CREEK MD Failure 01/01/2008 Unknown Unknown MD00000-152 Yes 0.00 MD00000 0 0 LITTLE YOUGHIGHENY SITE 3 MD Failure 01/01/2008 Unknown Unknown MD00000-153 Yes 0.00 MD00000 0 0 CHARTWELL GOLF COURSE MD Failure 01/01/2008 Unknown Unknown MD00000-154 No 0.00 MD00000 0 0 TODD LAKES MD Failure 01/01/2008 Unknown Unknown MD00000-155 No 0.00 MD00000 0 0 SCOTS FANCY MD Failure 01/01/2008 Unknown Unknown MD00000-156 No 0.00 MD00000 0 0 SHORES OF CALVERT MD Failure 01/01/2008 Unknown Unknown MD00000-157 No 0.00 MD00000 0 0 BREEDSVILE MI Failure 01/01/2008 Hydrologic/Flooding Unknown MI00000-158 No 0.00 MI00000 0 0 NILES MI Failure 01/01/2008 Hydrologic/Flooding Unknown MI00000-159 Yes 40 0.00 MI00000 0 0 LAKE ALPINE MO Failure 01/01/2008 Seepage/Internal Erosion Piping MO00000-161 No 0.00 MO00000 0 0 HERRING LAKE DAM MO L Failure 01/01/2008 Seepage/Internal Erosion Piping MO10914-169 No P RE R N 50 ft 1750.00 46.00 1968 MO10914 SNYDER CREEK 38.7593 -91.9629 DAM AND RESERVOIR SAFETY PROG KATY LAKE DAM MO H Failure 01/01/2008 Seepage/Internal Erosion Piping MO11048-168 No P RE SICR Y 45 ft 273.00 14.00 1905 MO11048 EWING CREEK 38.6985 -91.888 1987 DAM AND RESERVOIR SAFETY PROG ABNEY LAKE DAM MO L Failure 01/01/2008 Structural Stability Sliding MO30695-166 test No S RE R N 36 ft 117.00 8.00 1968 MO30695 TR-CLEAR CREEK 37.8231 -90.8224 DAM AND RESERVOIR SAFETY PROG LAC SHAYNE DAM MO H Failure 01/01/2008 Structural Stability Sliding MO31835-162 No L RE R N 72 ft 2475.00 51.00 1979 MO31835 POND CREEK 37.8974 -90.6434 1995 DAM AND RESERVOIR SAFETY PROG HARPER LAKE DAM MO H Failure 01/01/2008 Structural Stability Sliding MO31866-163 No P RE R N 38 ft 83.00 6.00 1978 MO31866 TR GOOSE CREEK 37.9924 -90.3557 DAM AND RESERVOIR SAFETY PROG LAKE KONSTANZ DAM MO H Failure 01/01/2008 Structural Stability Sliding MO32048-165 No P Y 90 ft 103.00 19.00 1999 MO32048 TRIB. CHARRETTE CREEK 38.7625 -91.0742 1998 DAM AND RESERVOIR SAFETY PROG LAKE BOUTIN DAM MO H Failure 01/01/2008 Structural Stability Sliding MO40008-164 No S RE R N 46 ft 377.00 19.00 1961 MO40008 TR-FLORA CREEK 37.4519 -89.4883 1991 DAM AND RESERVOIR SAFETY PROG EXEMPT-NCUC NC Failure 01/01/2008 Seepage/Internal Erosion Piping NC00000-170 No 0.00 NC00000 0 0 MOORE-029 NC Failure 01/01/2008 Seepage/Internal Erosion Piping NC00000-171 No 0.00 NC00000 0 0 MOORE-030 NC Failure 01/01/2008 Seepage/Internal Erosion Piping NC00000-172 No 0.00 NC00000 0 0 MACON-034 NC Failure 01/01/2008 Hydrologic/Flooding Unknown NC00000-173 No 0.00 NC00000 0 0 ANSON-025 NC Failure 01/01/2008 Hydrologic/Flooding Unknown NC00000-174 No 0.00 NC00000 0 0 MITCH-001 NC Failure 01/01/2008 Hydrologic/Flooding Unknown NC00000-175 No 0.00 NC00000 0 0 SEVERAL SMALL UNREGULATED DAMS VA Failure 01/01/2008 Unknown Unknown VA00000-178 No 0.00 VA00000 0 0 UNKNOWN VT Failure 01/01/2008 Hydrologic/Flooding Overtopping VT00000-177 No TC 0.00 VT00000 0 0 UNAUTHORIZED DAM WI Failure 01/01/2008 Hydrologic/Flooding Overtopping WI00000-180 No RE 0.00 WI00000 0 0 BLAND LAKE DAM TX L Non-Failure 03/30/2008 Hydrologic/Flooding Overtopping TX03968-2719 OVERTOPPING, DID NOT BREACH P RE R NR 12 ft 150.00 29.00 1890 TX03968 AYISH BAYOU 31.5889 -94.1114 TCEQ TX DEQ CONWAY SPORTS MAN'S CLUB LOWER DAM PA L Non-Failure 04/14/2008 Seepage/Internal Erosion Sinkhole PA01358-3179 DURING DEP INSPECTION, EXCESSIVE SEEPAGE AND 4' DEEP SINKHOLE FOUND ON DOWNSTREAM EMBANKMENT No 0 0 DEP INSTRUCTED OWNER TO BEGIN DRAWDOWN & COVER INFLOW AREA ON U/S FACE WITH RUBBER SHEETING. P RE R 18 ft 0.00 1917 PA01358 TR CONNOQUENESSING CREEK 40.4725 -80.0621 PADEP PA Dam Safety LEISURE LAKE #2 DAM MO S Failure 04/29/2008 Structural Stability Sinkhole MO10420-167 vertically below crest of dam. Sinkhole approximately 5 feet in diameter and 4 feet deep. Sinkhole may be result of seepage through old root tunnels. REPORTED APRIL 29, 2008 No RE R N 39 ft 135.00 3.00 1960 MO10420 TR-RACOON CREEK 40.104 -93.7353 NONE GREYBROOK LAKE IN Failure 06/01/2008 Hydrologic/Flooding Overtopping IN00000-141 No 0.00 IN00000 0 0 CAMP VICTOR CONSERVATION CLUB IN Failure 06/01/2008 Hydrologic/Flooding Overtopping IN00000-142 No 0.00 IN00000 0 0 PRINCES EAST LAKE DAM IN Failure 06/01/2008 Hydrologic/Flooding Overtopping IN00000-143 No 0.00 IN00000 0 0 FISH HATCHERY IN Failure 06/01/2008 Hydrologic/Flooding Overtopping IN00000-145 No 0.00 IN00000 0 0 UPPER PEOGA LAKE IN Failure 06/01/2008 Hydrologic/Flooding Overtopping IN00000-146 No 0.00 IN00000 0 0 EARLHAM LAKE IN Failure 06/01/2008 Unknown Spillway Deficiency IN00000-147 No 0.00 IN00000 0 0 HAMLIN LAKE MI Failure 06/01/2008 Hydrologic/Flooding Unknown MI00000-160 Yes 0.00 MI00000 0 0 LAKE DALECARLIA IN Failure 09/01/2008 Hydrologic/Flooding Overtopping IN00000-148 No RE 0.00 IN00000 0 0 LAKE CONNIE JEAN DAM TX L Non-Failure 09/13/2008 Unknown Spillway Deficiency TX00040-2718 S.S. FAILED, DID NOT BREACH P RE RP NR 20 ft 280.00 23.00 1965 TX00040 WILLIAMS CREEK 30.5168 -94.8099 1988 TCEQ TX DEQ KINGSTON FOSSIL PLANT TN Failure 12/22/2008 Unknown Unknown TN00000-186 No over $100 million RE T 0.00 TN00000 0 0 TVA Y FAWN LAKE PA H Non-Failure 03/02/2009 Unknown Spillway Chute Failure PA00693-3200 FAILURE OF THE SPILLWAY TRAINING WALL. No 0 0 FULL DRAWDOWN ORDERED UNTIL REPAIRS COMPLETED. SPILLWAY RECONSTRUCTION COMPLETED IN 2012. P RE R Y 44 ft 675.00 27.00 1972 PA00693 PLUM CREEK 40.5867 -76.19 2012 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety OLD CITY LAKE DAM TX S Failure 03/12/2009 Deterioration or Poor Condition Animal Activity TX02850-773 Piping through beaver holes No 0 0 Roads P RE R N 14 ft 92.00 25.00 1956 TX02850 HOARD BRANCH 32.6857 -95.8896 N HIGHWAY LAKE DAM C TX S Non-Failure 03/24/2009 Unknown Other TX03577-774 Spillway structure filled, but did not breach No 0 0 P RE R Y 20 ft 150.00 16.00 1956 TX03577 TR-CLARKS CREEK 32.5014 -94.6182 TCEQ LAKE LORRAINE DAM TX L Non-Failure 04/19/2009 Deterioration or Poor Condition Spillway Pipe Failure TX00109-777 Spillway pipe failed, partially drained lake No 0 0 None None P RE R NR 24 ft 196.00 25.00 1963 TX00109 TR-W FORK SAN JACINTO 30.3699 -95.6297 TCEQ LEISURE LAKE DAM TX H Non-Failure 04/25/2009 Deterioration or Poor Condition Spillway Pipe Failure TX01868-778 Spillway pipe failed, partially drained lake No 0 0 None P RE CR N 25 ft 322.00 20.00 1964 TX01868 TR-THOMPSONS CREEK 30.6338 -96.4119 TCEQ BATTLE LAKE DAM TX L Non-Failure 05/10/2009 Deterioration or Poor Condition Spillway Riser Failure TX04113-779 Spillway drop inlet failed and drained the lake No 0 0 None L RE IR NR 32 ft 916.00 30.00 1908 TX04113 RIGGS CREEK 31.548 -96.901 N LAKE SHERIDAN PA H Non-Failure 07/31/2009 Hydrologic/Flooding Overtopping PA00744-3213 AS PER THE EAP, OWNER CONTACTED DAM SAFETY INDICATING IMMINENT OVERTOPPING. Yes 0 0 STONE MASONRY DAM ON LARGE WATERSHED WAS CONSTRUCTED TO OVERTOP. NO EVACUATIONS. P MSST R Y 10 ft 834.00 63.00 1872 PA00744 TR TUNKHANNOCK CREEK 41.5953 -75.7664 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety PEDDY LAKE DAM TX S Failure 09/15/2009 Hydrologic/Flooding Overtopping TX07299-2717 OVERTOPPING, BREACHED P RE N 20 ft 96.00 12.00 1997 TX07299 UN TR-SOUTH FORK 32.9279 -95.2115 TCEQ TX DEQ VICKERY LAKE DAM TX H Non-Failure 10/13/2009 Hydrologic/Flooding Overtopping TX07292-2716 OVERTOPPING, DID NOT BREACH P RE R N 20 ft 56.00 7.00 1930 TX07292 UNTR-LAKE FORK CREEK 32.7392 -95.4779 TCEQ TX DEQ LAKE MAY (SECTION F) PA H Non-Failure 11/12/2009 Seepage/Internal Erosion Erosion Spillway Chute Failure PA01135-3177 BORO FOUND SEEPAGE ALONG THE EMERGENCY SPILLWAY. LARGE VOIDS FOUND BENEATH CONCRETE. No 0 0 LAKE WAS DRAWN DOWN. REPAIRS CONSISTED OF DRILLING HOLES IN THE SPILLWAY & FILLING VOIDS WITH GROUT. L RE R Y 22 ft 271.00 24.00 1967 PA01135 TOMS CREEK 39.7414 -77.3719 2010 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety LAKE GETAWAY DAM MS L Failure 01/21/2010 Structural Stability Slope Stability MS03566-775 Slope Stability - shear stress failure along plane of weakness in embankment No 0 0 Dams Downstream 276 P RE R NR 39 ft 340.00 29.00 2002 MS03566 31.7061 -88.9683 MS Dept. of Environmental Quality HEATERS POND DAM NJ H Non-Failure 03/01/2010 Hydrologic/Flooding Overtopping NJ00795-740 Overtopping Roads L PGRE R Y 8 ft 38.00 1910 NJ00795 SAWMILL BROOK 41.0728 -74.586 NJDEP LAKE SHAWNEE DAM NJ S Failure 03/13/2010 Hydrologic/Flooding Overtopping NJ00334-641 Overtopping 0 0 None P PGRE R Y 9 ft 376.00 79.00 NJ00334 WELDON BROOK 40.9698 -74.5972 NJDEP 12:00 AM PORICY DAM NJ L Failure 03/31/2010 Deterioration or Poor Condition Spillway Pipe Failure Sinkhole NJ00480-640 sinkhole and partial collapse of CMP 0 0 Roads 0 L PGRE R NR 8 ft 18.00 NJ00480 PORICY BROOK 40.3571 -74.0862 NJDEP SUNBEAM LAKE DAM CA Non-Failure 04/04/2010 Seismic Sinkhole CA00000-1338 damaged from magnitude 7.2 earthquake/small sinkhole near outlet structure, formation of fissures near dam 0 0 RE R 0.00 CA00000 OFFSTREAM 33 -116 CA DSOD DUNHAM LAKE DAM KY L Non-Failure 05/02/2010 Unknown Under Investigation KY00165-681 Other 0 0 Roads L RE R NR 25 ft 17.00 1955 KY00165 LITTLE BARREN RIVER 36.9908 -85.6144 DOW SPRINGBROOK TN L Failure 05/02/2010 Hydrologic/Flooding Spillway Erosion/Head Cutting TN11312-765 Spillway eroded during heavy rains No 0 0 None 517 P RE 0.00 1969 TN11312 0 0 2012 SUNSET TN L Non-Failure 05/02/2010 Hydrologic/Flooding Overtopping TN11313-768 Downstream slope badly eroded due to overtopping No 0 0 None P RE NR 28 ft 295.00 21.00 1969 TN11313 SPRING CREEK 35.7169 -88.6619 TENN SAFE DAMS PRG FERN LAKE TN L Failure 05/02/2010 Hydrologic/Flooding Spillway Erosion/Head Cutting TN11314-769 Spillway eroded during heavy rains No 0 0 None 65 P RE 0.00 1969 TN11314 0 0 2012 CARROLLWOOD LAKE 'A-C' TN S Failure 05/02/2010 Unknown Other TN15786-770 TN Safe Dams No 0 0 None 112 P RE NR 14 ft 161.00 20.00 1988 TN15786 TRIB-FLETCHER CREEK 35.1836 -89.7689 TENN SAFE DAMS PRG LOST NATION LAKE # 5 DAM MI L Failure 05/21/2010 Hydrologic/Flooding Overtopping MI00555-1420 Overtopping and possibly seepage RE R Y 12 ft 210.00 25.00 1956 MI00555 TRIB TO E BR ST JOSEPH 41.855 -84.5011 Michigan DEQ HEATH BRANCH FISHING CLUB LAKE DAM TX S Non-Failure 05/21/2010 Deterioration or Poor Condition Spillway Pipe Failure TX02957-781 Spillway pipe failed, partially drained lake No 4 0 None P RE R N 21 ft 400.00 0.00 1940 TX02957 MCDONALD CREEK 30.6646 -95.563 TCEQ INDIAN HEAD LAKE IN S Non-Failure 06/01/2010 Hydrologic/Flooding Overtopping IN03388-1045 A heavy rainfall event overtopped this dam causing heavy damage to the downstream slope. RE R 20 ft 0.00 1979 IN03388 UNNAMED TRIBUTARY WHITE LICK CREEK 40 -86 CLUB 13 LAKE DAM TX L Failure 06/10/2010 Hydrologic/Flooding Overtopping TX00255-1232 Dam overtopped and failed No 0 0 P RE R NR 28 ft 324.00 172.00 1966 TX00255 TR-BUTLER CREEK 32.2792 -95.4188 TCEQ LOST PINE LAKE DAM TX S Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX00257-1240 Dam overtopped by more than one foot. Dam did not fail, but downstream slope was severely damaged. No 0 0 0 P RE R Y 23 ft 568.00 36.00 1929 TX00257 TR-INDIAN CREEK 32.3153 -95.4152 TCEQ SPRING LAKE DAM TX S Failure 06/10/2010 Hydrologic/Flooding Overtopping TX00268-1231 Dam overtopped and failed No 0 0 P RE IR N 23 ft 230.00 15.00 1920 TX00268 HITTS CREEK 32.4298 -95.301 TCEQ RICHLAND CREEK WS SCS SITE 6A DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX00433-1253 Dam overtopped, but did not fail. No 0 0 L RE C NR 24 ft 1036.00 35.00 1964 TX00433 TR-NORTH FORK PIN OAK CREEK 31.8203 -96.7322 TCEQ RICHLAND CREEK WS SCS SITE 16 DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX01070-1255 Dam overtopped, but did not fail. No 0 0 L RE C NR 31 ft 796.00 29.00 1962 TX01070 TR-MUNGER CREEK 31.7883 -96.6242 TCEQ RICHLAND CREEK WS SCS SITE 16A DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX01071-1254 Dam overtopped, but did not fail. No 0 0 L RE C NR 20 ft 303.00 8.00 1963 TX01071 TR-MUNGER CREEK 31.7907 -96.6186 TCEQ RICHLAND CREEK WS SCS SITE 15 DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX02621-1249 Dam overtopped, but did not fail. 0 0 L RE C NR 30 ft 1764.00 30.00 1963 TX02621 TR-PIN OAK CREEK 31.8507 -96.5642 TCEQ RICHLAND CREEK WS SCS SITE 14A DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX02622-1250 Dam overtopped, but did not fail. No 0 0 L RE C NR 22 ft 974.00 42.00 1964 TX02622 TR-PIN OAK CREEK 31.8398 -96.608 2005 TCEQ RICHLAND CREEK WS SCS SITE 14 DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX02623-1251 Dam overtopped, but did not fail. No 0 0 L RE C NR 22 ft 1298.00 50.00 1965 TX02623 TR-PIN OAK CREEK 31.8308 -96.5963 TCEQ RICHLAND CREEK WS SCS SITE 31 DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX02624-1248 Dam overtopped, but did not fail. Had considerable emerency spillway damage. No 0 0 L RE I NR 35 ft 5838.00 56.00 1963 TX02624 BOARD CREEK 31.8705 -96.5676 2010 TCEQ RICHLAND CREEK WS SCS SITE 107A DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX02629-1243 Dam overtopped, but did not fail. No 0 0 L RE C NR 31 ft 886.00 19.00 1970 TX02629 TR-BATTLE CREEK 31.8655 -96.7147 TCEQ RICHLAND CREEK WS SCS SITE 107B DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX02630-1241 Dam overtopped by nearly one foot. Dam did not fail, but downstream slope severely damaged. No 0 0 L RE PF NR 35 ft 595.00 27.00 1964 TX02630 TR-BATTLE CREEK 31.8752 -96.7061 TCEQ RICHLAND CREEK WS SCS SITE 12 DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX02632-1252 Dam overtopped, but did not fail. No 0 0 L RE C NR 22 ft 2149.00 53.00 1966 TX02632 ALLIGATOR CREEK 31.8111 -96.6272 TCEQ RICHLAND CREEK WS SCS SITE 110 DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX02634-1246 Dam overtopped, but did not fail. Suffered slope damage. No 0 0 L RE C NR 30 ft 791.00 36.00 1970 TX02634 TR-BATTLE CREEK 31.8914 -96.6901 TCEQ RICHLAND CREEK WS SCS SITE 113 DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX02636-1247 Dam overtopped, but did not fail. No 0 0 L RE C NR 26 ft 638.00 30.00 1970 TX02636 TR-BATTLE CREEK 31.9069 -96.6653 TCEQ RICHLAND CREEK WS SCS SITE 109 DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX02642-1245 Dam overtopped, but did not fail. No 0 0 L RE C NR 22 ft 237.00 8.00 1970 TX02642 TR-BATTLE CREEK 31.8878 -96.6949 2005 TCEQ RICHLAND CREEK WS SCS SITE 105 DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX02643-1244 Dam overtopped, but did not fail. No 0 0 L RE C NR 44 ft 533.00 12.00 1970 TX02643 TR-TREADWELL BRANCH 31.9329 -96.699 TCEQ CEDAR CREEK WS SCS SITE 137 DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX02810-1257 Dam overtopped, but did not fail. No 0 0 L RE CRP NR 33 ft 590.00 14.00 1965 TX02810 TR-LACY FORK 32.4522 -96.0635 2010 TCEQ CEDAR CREEK WS SCS SITE 138 DAM TX L Non-Failure 06/10/2010 Hydrologic/Flooding Overtopping TX02811-1256 Dam overtopped, but did not fail. No 0 L RE CRP NR 29 ft 831.00 21.00 1968 TX02811 TR-CANEY CREEK 32.426 -96.0689 TCEQ GRACIE CREEK ROAD DAM NE L Failure 06/12/2010 Hydrologic/Flooding Overtopping NE02661-1228 severe storm and overtopping No 0 0 Roads 142 F RE 20 ft 0.00 1980 NE02661 0 0 2003 SPALDING DIVERSION DAM NE L Non-Failure 06/12/2010 Hydrologic/Flooding Overtopping NE00000-1229 The dam was overtopped but did not fail. No 0 0 0 RE H 11 ft 0.00 NE00000 CEDAR RIVER 0 0 MORGAN DAM NE L Failure 06/12/2010 Hydrologic/Flooding Overtopping NE00000-1230 overtopped and breached No 0 0 Roads 341 RE O 20 ft 0.00 1960 NE00000 GRACIE CREEK 0 0 NE DNR BREDTHAUER DAM NE L Failure 06/12/2010 Hydrologic/Flooding Overtopping NE00264-1222 Heavy rainfall runoff. 339 85 Water/sewer lines 600 RE 26 ft 0.00 NE00264 0 0 ATKINSON DAM RECONSTR NE L Non-Failure 06/12/2010 Hydrologic/Flooding Overtopping NE00410-1224 The dam was overtopped but did not fail. The dam was rebuilt in 1992 after it breached through the emer spwy. No 0 0 0 L RE R NR 13 ft 360.00 19.00 1992 NE00410 ELKHORN RIVER 42.5379 -99.0005 NE DNR BURWELL SUMTER DIVERSION DAM NE L Non-Failure 06/12/2010 Hydrologic/Flooding Overtopping NE01464-1225 The dam was overtopped but did not fail. No 0 0 0 RE I NR 21 ft 1100.00 1.00 1933 NE01464 NORTH LOUP RIVER 41.7909 -99.131 NE DNR TAYLOR ORD DIVERSION DAM NE L Failure 06/12/2010 Hydrologic/Flooding Overtopping NE01480-1226 The dam was overtopped and was completely washed away. No 0 0 170 RE I NR 10 ft 170.00 1.00 1939 NE01480 NORTH LOUP RIVER 41.7947 -99.4603 NE DNR HARDENBROOK DIV DAM NE L Non-Failure 06/12/2010 Hydrologic/Flooding Overtopping NE01509-1227 The dam was overtopped and was severely damaged, but did not fail. No 0 0 0 RE 10 ft 0.00 1939 NE01509 0 0 ERICSON DAM NE L Failure 06/13/2010 Hydrologic/Flooding Spillway Erosion/Head Cutting NE00274-1223 Breached through the emer spwy. The emer spwy was redesigned and modified in 2003. Once the topsoil was removed, the underlying soil was mostly sand. It took about 3 hours for the headcut to advance all the way upstream through the emer spwy. No 0 0 750 P RE C NR 35 ft 968.00 123.00 1916 NE00274 CEDAR RIVER 41.7584 -98.6529 2004 NE DNR LOWER KLONDIKE PA H Non-Failure 07/16/2010 Seepage/Internal Erosion Excessive/Increased Seepage PA00751-3176 OBSERVATION OF NEW, STEADY SEEPAGE AT DOWNSTREAM END OF SPILLWAY & LOW-LEVEL DRAIN PIPE. No 0 0 OWNER DIRECTED TO LOWER LAKE AT 1 FT PER DAY & TO MONITOR SEEPAGE P RE R Y 19 ft 254.00 22.00 1960 PA00751 LEHIGH RIVER 41.2533 -75.4508 2007 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety LAKE DELHI DAM IA S Failure 07/25/2010 Unknown Under Investigation IA01297-600 Heavy rain in the area caused the dam to overtop and fail. The dam had three gates at least one of which was not operating properly and only partially open at the time of the flood. No 900 1100 None 9930 P PG R NR 55 ft 9920.00 440.00 1922 IA01297 MAQUOKETA RIVER 42.4081 -91.3454 IOWA DNR 12:00 AM ROSE HILL DAM SD L Failure 07/30/2010 Hydrologic/Flooding Overtopping SD00759-3252 No 0 Unknown S RE R NR 38 ft 950.00 32.00 1935 SD00759 TR-SAND CREEK 0 0 SD DENR No SD DENR BOWEN IRRIGATION POND DAM GA U Non-Failure 08/06/2010 Unknown Unknown GA05016-280 test

test No P RE R NR 10 ft 104.00 14.00 GA05016 CYPRESS CREEK 31.4389 -83.4083 BOWEN 2 VA Failure 08/06/2010 Structural Stability Cracking VA00000-281 test 0.00 VA00000 0 0 LAKE LEHMAN PA H Non-Failure 08/23/2010 Seepage/Internal Erosion Excessive/Increased Seepage PA00341-3214 NEW & SIGNIFICANT SEEPAGE WAS OBSERVED ALONG A GUIDE WALL, DOWNSTREAM END OF OUTLET PIPE. No 0 0 OWNER ISTRUCTED TO LOWER LAKE AT RATE OF 1 FT PER DAY. LAKE MAINTAINED 10' BELOW NORMAL POOL. P RE SR 52 ft 0.00 PA00341 POWDER MILL RUN 39.5147 -76.5139 PADEP PA Dam Safety GABRIELS OVERLOOK DAM TX H Non-Failure 09/08/2010 Hydrologic/Flooding Overtopping TX07254-2715 OVERTOPPING, DID NOT BREACH P RE Y 25 ft 114.00 11.00 1964 TX07254 TRIBUTARY OF SAN GABRIEL RIVER 30.6195 -97.8003 TCEQ TX DEQ SAN GABRIELS OVERLOOK DAM TX S Non-Failure 09/08/2010 Hydrologic/Flooding Overtopping TX00000-1220 Dam overtopped, but did not breach No 0 0 RE R 25 ft 0.00 1960 TX00000 TRIBUTARY OF SOUTH FORK SAN GABRIEL RIVER 0 0 TCEQ HURLEY LAKE DAM TX S Failure 11/29/2010 Hydrologic/Flooding Overtopping TX00000-1221 Dam overtopped. Dam breached No 0 0 Water/sewer lines Unknown 15 RE R 20 ft 0.00 TX00000 TRIBUTARY OF FLAT CREEK 0 0 TCEQ MARIANO BORO. INTAKE DAM PA L Failure 12/01/2010 Deterioration or Poor Condition Overtopping PA00000-3241 CONCRETE DAM FAILED ON RIGHT ABUTMENT. EROSION ALONG DAM WAS A THREAT TO ADJACENT STATE ROAD. No 0 0 POOL DRAWN DOWN WITH PUMPS. EMERGENCY PERMIT REPAIRS BY BORO USED CONCRETE BAGS & REBAR. L CN S 6 ft 0.00 PA00000 TENMILE CREEK 40.011 -80.0542 PADEP PA Dam Safety SOUTH CREEK - WASHINGTON COUNTY UT H Non-Failure 12/21/2010 Hydrologic/Flooding Slope Stability UT00588-910 Heavy rainfall resulted in a surface slump of the downstream slope just below the crest Yes 50 0 None $100,000 to $500,000 0 P RE I Y 91 ft 2250.00 0.00 1988 UT00588 SOUTH CREEK 37.1472 -112.985 12:00 AM CLUB 20 LAKE DAM TX S Non-Failure 01/01/2011 Seepage/Internal Erosion Sinkhole TX02841-2714 SINKHOLE AT TOE WITH SEEPAGE P RE IR Y 29 ft 269.00 23.00 1962 TX02841 TR-GRAND SALINE CREEK 32.5386 -95.7741 2002 TCEQ TX DEQ STEHLIK DAM 4436 NE U Failure 01/01/2011 Unknown Unknown NE04436-3034 None P C NR 18 ft 64.00 2.00 1960 NE04436 40.609 -96.9949 NE DNR No NeDNR SAGE CREEK DAM MT U Failure 02/14/2011 Hydrologic/Flooding Spillway Erosion/Head Cutting MT00000-981 Rain and snowmelt resulted in headcut of spillway and eventual failure over several weeks. No 0 0 Roads RE 0.00 MT00000 SAGE CREEK 47 108 MTDNRC GATES MILLS LOW HEAD DAM OH Failure 02/28/2011 Hydrologic/Flooding Overtopping OH00000-980 high flows washed out the dam No PG R 7 ft 0.00 1903 OH00000 CHAGRIN RIVER 41 81 ODNR - DSWR 12:00 AM OHIO POWER COMPANY POND DAM MUR-3 OH S Non-Failure 02/28/2011 Deterioration or Poor Condition High Reservoir Level OH00845-970 Obstructed spillway caused the lake level to rise - owner performed controlled breach No 0 RE T N 59 ft 818.00 27.00 1962 OH00845 SIMS RUN 39.91 -81.72 DEPARTMENT OF NATURAL RESOURCES BURTON LAKE DAM OH S Non-Failure 02/28/2011 Hydrologic/Flooding Overtopping OH01611-968 heavy rains overtopped the dam - no significant damage Yes 0 L RE R Y 9 ft 447.90 18.00 1952 OH01611 TRIBUTARY TO BRIDGE CREEK 41.43 -81.18 DEPARTMENT OF NATURAL RESOURCES GORGE PLANT DAM OH H Non-Failure 03/05/2011 Hydrologic/Flooding High Reservoir Level OH00481-971 High flows over the dam reached level to activate "EAP watch" Yes 0 U CN S Y 57 ft 1149.00 34.00 1912 OH00481 CUYAHOGA RIVER 41.12 -81.49 DEPARTMENT OF NATURAL RESOURCES OSAGE LAKE DAM OH S Non-Failure 03/05/2011 Deterioration or Poor Condition Erosion OH00617-969 corrosion in riser caused water level to drop and erosion of u/s slope of the embankment Yes 4 PP RE R Y 28 ft 146.00 11.00 1955 OH00617 TRIBUTARY TO RIVER STYX 41.06 -81.77 DEPARTMENT OF NATURAL RESOURCES FOWLER FINCH POND DAM NY L Non-Failure 03/10/2011 Seepage/Internal Erosion Piping NY01046-960 Dam was breached because it was in the process of failing due to internal erosion - High water (rainfall event) - well within spillway capacity No 0 0 None P RE R N 16 ft 200.00 21.00 1958 NY01046 TR-CARRS CREEK 42.3106 -75.2375 NYS DEC LOWER ALFORD LAKE PA H Non-Failure 03/11/2011 Seepage/Internal Erosion Excessive/Increased Seepage PA00053-3207 CALL FROM A CONCERNED CITIZEN REGARDING A POTENTIAL PROBLEM. SEEPAGE AND SPILLWAY FLOW OBSERVED. No 0 0 DEP INSPECTOR VISIT TO DAM ON THE NEXT MORNING CONFIRMED NO CHANGE IN PRE-EXISTING SEEPAGE. P MSREST R Y 15 ft 315.00 34.00 1919 PA00053 MARTINS CREEK 41.8069 -75.7742 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 1 DAY PA Dam Safety BIG ELK LAKE PA S Non-Failure 03/28/2011 Seepage/Internal Erosion Excessive/Increased Seepage PA00056-3205 PA DAM SAFETY INFORMED OF CLEAR SEEPAGE EXITING ON LEFT SIDE OF A SPILLWAY. No 0 0 0 DEPRESSION AREA ISOLATED BY COFFER DAM AND BACKFILLED WITH CONCRETE AS A TEMPORARY REPAIR. P MSREST RS Y 12 ft 740.00 79.00 1860 PA00056 ELK LAKE STREAM 41.7528 -75.9547 2006 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 2 DAYS PA Dam Safety SCNONAME 32095 SC H Non-Failure 03/30/2011 Deterioration or Poor Condition Animal Activity SC01361-982 Animal Burrow through dam P RE R Y 23 ft 93.00 6.00 1950 SC01361 TR-KOON BRANCH 34.0633 -81.19 1989 SCDHEC PINE GROVE CA L Non-Failure 04/01/2011 Seepage/Internal Erosion Sinkhole CA00541-1381 leakage at left upstream face/abutment area of main embankment, 2 sinkholes approx 1-2 ft in diameter No 0 0 0 U RE S NR 42 ft 324.00 9.00 1911 CA00541 L SHADY CREEK 39.3191 -121.129 Division of Safety of Dams LAKE LENAPE DAM NJ H Non-Failure 04/04/2011 Other Other NJ00450-964 Cofferdam was undermined during construction Yes 0 L PGRE R Y 29 ft 6610.00 300.00 1879 NJ00450 GREAT EGG HARBOR RIVER 39.4548 -74.7353 NJDEP 12:00 AM CLAUSEN SPRINGS DAM ND H Non-Failure 04/08/2011 Hydrologic/Flooding High Reservoir Level ND00029-963 flow through the emergency spillway No 0 0 L RE FR Y 52 ft 1274.60 42.00 1967 ND00029 SPRING CREEK 46.6832 -98.0369 1968 NDSWC BURLINGTON DAM #1 ND L Non-Failure 04/11/2011 Hydrologic/Flooding Piping ND00275-962 The Des Lacs River was at flood stage, causing the dam to be in danger of overtopping. The dam was also experiencing piping in a couple of locations. No 200 0 None 0 L RE IR NR 27 ft 566.90 38.00 1935 ND00275 DES LACS RIVER 48.2852 -101.455 1957 NDSWC HENION POND DAM NJ S Non-Failure 04/17/2011 Seepage/Internal Erosion Sinkhole NJ00224-966 Sinkhole developed along crest of earth embankment Yes 0 P PGRE R Y 10 ft 45.00 1926 NJ00224 PEQUANNOCK RIVER-TR 41.019 -74.363 NJDEP 12:00 AM DUNDEE NJ L Non-Failure 04/17/2011 Hydrologic/Flooding Other NJ00243-967 EAP was activated due to high water levels at the spillway Yes 0 P MSPGCN HS Y 16 ft 3584.00 224.00 1854 NJ00243 PASSAIC RIVER 40.8833 -74.1271 NJDEP ORADELL RESERVOIR DAM NJ H Non-Failure 04/17/2011 Hydrologic/Flooding High Reservoir Level NJ00258-965 EAP was activated due to high water levels at the spillway Yes 0 P PGRE S Y 25 ft 796.00 1922 NJ00258 HACKENSACK RIVER 40.9562 -74.0291 NJDEP 12:00 AM WILLOW CREEK DAM NV L Non-Failure 04/19/2011 Hydrologic/Flooding Other NV00054-1388 High Precipitation in area during spring snowpack runoff activated flow through emergency spillway. Yes 0 0 P CNER IRFC Y 58 ft 8000.00 480.00 NV00054 WILLOW CREEK 41.21 -116.536 1912 NEVADA DWR COLUMBINE CA H Non-Failure 04/20/2011 Seepage/Internal Erosion Spillway Pipe Failure Piping CA00682-1382 leakage along continuous void below unencased spillway pipe
leakage near exposed spillway overflow pipe on downstream embankment face No 0 0 None U RE IS NR 24 ft 62.00 3.00 1963 CA00682 OFFSTREAM 37.3542 -121.793 Division of Safety of Dams 12:00 AM CAROLINA LAKE DAM NC S Non-Failure 04/25/2011 Deterioration or Poor Condition Spillway Riser Failure NC03561-961 Structural failure at base of aging and deteriorated CMP principal spillway riser drained reservoir through principal spillway barrel Yes 0 0 None 100 P RE R N 24 ft 230.00 0.00 NC03561 HERDS CREEK 35.3578 -79.2959 SUNFISH POND PA L Failure 04/27/2011 Unknown Overtopping PA00000-3231 MOST OF STONE RETAINING WALL ON THE D/S SIDE OF THE DAM COLLAPSED. 0 0 0 0 DAM WAS BREACHED TO PREVENT POTENTIAL LOSS OF DOWNSTREAM CULVERT. S STMS F 11 ft 0.00 PA00000 TR MIDDLE CREEK 40.1611 -76.1457 PADEP 1 DAY No PA Dam Safety LAKE OF THE HILLS DAM MO H Non-Failure 04/30/2011 Structural Stability Sliding MO30077-1386 Small slide on downstream face during intense rainfall event No 0 0 P RE R N 37 ft 1143.00 73.00 1960 MO30077 TR CANE CREEK 37.2506 -90.0281 1993 DAM AND RESERVOIR SAFETY PROG LAC MICHEL DAM MO H Non-Failure 04/30/2011 Structural Stability Sliding MO30285-1385 Small slide on downstream face during intense rainfall event No 0 0 P RE R N 41 ft 99.00 10.00 1971 MO30285 TR BIG RIVER 37.9112 -90.6271 1997 DAM AND RESERVOIR SAFETY PROG SEVEN LAKES DAM #3 MO H Non-Failure 04/30/2011 Structural Stability Sliding MO31032-1384 Small slide on downstream face during intense rainfall event No 0 0 P RE R Y 45 ft 1300.00 61.00 1944 MO31032 GOOSE CREEK 37.2544 -90.6352 DAM AND RESERVOIR SAFETY PROG TURNER'S DREAM LAKE DAM MO H Non-Failure 04/30/2011 Hydrologic/Flooding Overtopping MO31108-1387 Headcut erosion/Overtopping No 0 0 P RE R N 35 ft 988.00 50.00 1977 MO31108 TR-BARNES CREEK 37.1409 -90.2424 NONE SLIVER SPRING LAKE DAM NJ L Failure 05/23/2011 Hydrologic/Flooding Overtopping NJ00000-1195 High water levels overtopped the dam, causing the dam to fail 0 9 RE R 21 ft 0.00 1930 NJ00000 MUSCONETCONG RIVER 0 0 NJDEP 12:00 AM GLENDALE LAKE DAM IN S Failure 05/30/2011 Seepage/Internal Erosion Piping IN00320-1041 Substantial internal erosion failure. A large void exists under the left end of the spillway system. No foundation material remains under a large portion of the concrete spillway. No 0 0 None 28 P RE R N 14 ft 54.00 6.00 1945 IN00320 UNNAMED TRIBUTARY DEER CREEK 40.5 -85.6708 IDNR HEUVELTON NY S Failure 06/07/2011 Malfunction of Equipment/Gate Gate/Valve Failure NY00411-1040 A rubber bladder gate was punctured and deflated. Yes 0 0 None P CNPG H Y 35 ft 405.00 239.00 1923 NY00411 OSWEGATCHIE RIVER 44.6177 -75.4048 1993 NYS DEC Y MCDILL WI S Non-Failure 06/10/2011 Seepage/Internal Erosion Piping WI00176-1330 Depression was noted in downstream embankment adjacent to the outlet structure. Die testing showed evidence of piping through embankment. Drawdown was initiated. No 0 0 None L CNRE Y 21 ft 2160.00 261.00 1855 WI00176 PLOVER 44.4928 -89.5558 1962 WIDNR Y SALINAS RIVER DIVERSION CA L Non-Failure 06/17/2011 Seepage/Internal Erosion Erosion CA00000-1383 High flows through the regulating Obermeyer gate scoured and piped the left abutment area.
A sinkhole formed in the left abutment, downstream of the dam. A void underneath the fish ladder and material piped into river. 0 0 None I 16 ft 0.00 2006 CA00000 SALINAS 37 -122 CA DSOD WALTONVILLE LAKE DAM IL S Failure 06/26/2011 Unknown Under Investigation IL00169-1081 Water flowing from embankment at downstream toe. Initial flow crossed state highway.
Under Investigation/Animal Activity No 0 0 Roads 15 L RE R N 22 ft 153.00 18.00 IL00169 TRIB BUCK CREEK 38.2083 -89.0417 IDNR 12:00 AM Y BILLS RANCH LAKE CO S Non-Failure 07/03/2011 Hydrologic/Flooding Overtopping Animal Activity CO00000-1365 Runoff from high snowpack and spillway blockage resulted in overtopping of the dam - rodent damage in the crest No 0 0 None RE R 8 ft 0.00 1930 CO00000 MINERS 40 106 CO Division of Water Resources WOODCLIFF LAKE DAM NJ H Non-Failure 07/06/2011 Seepage/Internal Erosion Excessive/Increased Seepage NJ00247-1163 New seepage found at dam - Small leak observed in the floor of the gate house Yes 0 0 Unknown Unknown P PGRE S Y 38 ft 117.00 1906 NJ00247 PASCALK BROOK 41.0128 -74.0493 NJDEP 12:00 AM FOREST LAKE DAM NC H Non-Failure 07/07/2011 Deterioration or Poor Condition Spillway Chute Failure NC01691-1080 A portion of the concrete chute spillway detached and fell into the void beneath approximately five feet in depth. Yes 32 None 30 P RE R Y 15 ft 60.00 0.00 NC01691 MCALPINE CREEK-TR 35.205 -80.719 NCDENR Y LOS ALAMOS CANYON DAM NM H Non-Failure 07/08/2011 Hydrologic/Flooding Other NM00299-1366 Dam was under rehabilitation construction when the site was evacuated and the area back-burned to prevent a wildfire from reaching Los Alamos. The overflow spillway had been demolished and the dam crest lowered during construction. 0 0 Water/sewer lines L RE S Y 40 ft 33.00 2.00 1943 NM00299 LOS ALAMOS CANYON 35.8835 -106.354 2013 Office of the State Engineer BARRY LAKES #1 DAM NJ L Non-Failure 08/01/2011 Seepage/Internal Erosion Piping NJ00509-1164 Water flowing along outlet pipe/settlement along outlet pipe No 0 0 Unknown Unknown P PGRE R N 15 ft 59.00 20.00 1955 NJ00509 WAWAYANDA CREEK-TR 41.1969 -74.4412 NJDEP 12:00 AM SUNSET LAKE DAM NJ H Non-Failure 08/14/2011 Hydrologic/Flooding Overtopping NJ00063-1180 overtopped, severe erosion of downstream slope and failure of gabion slope protection Yes 50 0 Roads 0 L PGRE R Y 20 ft 94.00 1927 NJ00063 COHANSEY RIVER 39.4468 -75.2353 NJDEP SEELEY'S MILL POND DAM NJ S Failure 08/14/2011 Hydrologic/Flooding Overtopping NJ00065-1182 overtopped and breached No 0 Roads 186 PGRE I N 18 ft 69.00 NJ00065 COHANSEY RIVER 39.4876 -75.2584 NJDEP CENTERTON LAKE DAM NJ S Failure 08/14/2011 Hydrologic/Flooding Overtopping NJ00439-1183 overtopping resulting in severe erosion of embankment Yes 0 Unknown unknown 132 P PGRE R Y 12 ft 576.00 37.00 1942 NJ00439 MUDDY RUN 39.525 -75.1699 NJDEP CUSHMAN LAKE DAM NJ L Failure 08/14/2011 Hydrologic/Flooding Overtopping NJ00447-1181 Overtopped, breach of emergency spillway 0 Unknown unknown 400 P PGRE R NR 17 ft 62.00 NJ00447 HOSPITALITY BRANCH 39.5956 -74.8668 NJDEP SUNSET LAKE DAM NJ S Non-Failure 08/14/2011 Hydrologic/Flooding Spillway Pipe Failure Erosion NJ00512-1166 erosion of embankment due to joint separation in outlet culvert Yes 0 0 Unknown Unknown P PGRE R Y 8 ft 50.00 1950 NJ00512 WHITE HALL BRANCH 39.6349 -74.9644 NJDEP BURNT MILL POND DAM NJ S Non-Failure 08/14/2011 Hydrologic/Flooding Overtopping NJ00632-1165 overtopped, severe erosion of embankment near spillway No 0 0 Unknown Unknown L PGRE R Y 9 ft 40.00 9.00 NJ00632 BURNT MILL BRANCH 39.5318 -75.0443 NJDEP SUNSET LAKE RACEWAY DAM NJ H Failure 08/14/2011 Hydrologic/Flooding Overtopping NJ00764-1167 earthen embankment overtopped and breached Yes 50 Unknown Unknown 417 L PGRE R Y 11 ft 103.00 1949 NJ00764 COHANSEY RIVER 39.4319 -75.2371 NJDEP PEDLAR RIVER DAM VA H Non-Failure 08/23/2011 Seismic Other VA00905-1142 Obvious earthquake, stage I declared immediately after Yes 0 0 0 L PG RS Y 87 ft 4300.00 125.00 1964 VA00905 PEDLAR RIVER 37.67 -79.2767 DCR 12:00 AM CASSVILLE DAM NJ S Failure 08/27/2011 Hydrologic/Flooding Overtopping NJ00606-2864 overtopped, embankment failure Irene No 0 Roads 0 P PGRE R Y 6 ft 14.00 NJ00606 SMALL BRANCH TOMS RIVER 40.1107 -74.3889 NJDEP NJ DEP CEDAR BRIDGE DAM NJ L Failure 08/27/2011 Hydrologic/Flooding Spillway Chute Failure NJ00000-1194 undermining of spillway Irene No 0 0.00 NJ00000 S. BRANCH METEDECONK-TR 0 0 NJDEP SHANTY DRIVE DAM NJ L Non-Failure 08/27/2011 Hydrologic/Flooding Overtopping NJ00000-1196 erosion of downstream embankment possible due to overtopping or roadway runoff Irene No 0 0 RE R 9 ft 0.00 NJ00000 HAYNES CREEK-TR 0 0 NJDEP LAKE HARTUNG DAM NJ L Non-Failure 08/27/2011 Hydrologic/Flooding Overtopping NJ00000-1197 Overtopped, erosion, corewall exposed Irene No 0 0 RE R 10 ft 0.00 NJ00000 RUSSIA BROOK 0 0 NJDEP KENILWORTH #3 DAM NJ L Non-Failure 08/27/2011 Hydrologic/Flooding Sinkhole NJ00000-1198 Sinkhole developed along outlet culvert Irene 0 Roads 0 R 6 ft 0.00 NJ00000 BARTON RUN-TR 0 0 NJDEP PENNY POT LAKE DAM NJ L Failure 08/27/2011 Hydrologic/Flooding Overtopping NJ00000-1199 Overtopped Irene 0 R 6 ft 0.00 NJ00000 HOSPITALITY BRANCH 0 0 NJDEP CASSVILLE DAM NJ S Failure 08/27/2011 Hydrologic/Flooding Overtopping NJ00000-1200 overtopped, embankment failure Irene No 0 100 R 6 ft 0.00 NJ00000 SMALL BRANCH TOMS RIVER 0 0 NJDEP LENARTOWICZ DAM NJ L Failure 08/27/2011 Hydrologic/Flooding Overtopping NJ00000-1201 Overtopping, embankment failure Irene No 0 1 R 7 ft 0.00 NJ00000 UNNAMED 0 0 NJDEP STONE'S DAM NJ L Failure 08/27/2011 Hydrologic/Flooding Piping NJ00000-1202 piping under spillway Irene No 0 CN R 9 ft 0.00 NJ00000 HAKIHOKAKE CREEK 0 0 NJDEP PLEASANT MILLS DAM NJ S Non-Failure 08/27/2011 Hydrologic/Flooding Overtopping NJ00044-1187 overtopped, severe loss of embankment due to erosion into open pipe joint Irene Yes 0 Roads 0 P PGRE R Y 16 ft 45.00 NJ00044 HAMMONTON CREEK 39.636 -74.6607 NJDEP SHADOW LAKE DAM NJ S Non-Failure 08/27/2011 Hydrologic/Flooding Overtopping NJ00090-1188 overtopped, embankment/road damage Irene No 0 0 L PGRE R Y 16 ft 83.00 1931 NJ00090 QUIOLEY CREEK 40.3528 -74.085 NJDEP LINDY'S LAKE DAM NJ H Non-Failure 08/27/2011 Hydrologic/Flooding Overtopping NJ00201-1184 Minor overtopping damage Irene No 0 P PGRE R Y 24 ft 20.00 NJ00201 WEST BROOK-TR 41.0745 -74.3707 NJDEP LAKE NEEPAULIN DAM NJ S Non-Failure 08/27/2011 Hydrologic/Flooding Overtopping NJ00282-1161 overtopped, embankment damage Irene No 0 0 Unknown unknown L RE R Y 22 ft 143.00 13.00 1927 NJ00282 PAPAKATING CREEK 41.2145 -74.6257 NJDEP SWANNANOA LAKE #1 (SOUTH) DAM NJ H Non-Failure 08/27/2011 Hydrologic/Flooding Overtopping NJ00311-1160 overtopped, embankment damage Irene No 0 0 Unknown unknown P MS R Y 15 ft 51.00 1914 NJ00311 WEST BRANCH ROCKAWAY RIVER 41.0078 -74.5179 NJDEP SAFFIN POND DAM NJ S Failure 08/27/2011 Hydrologic/Flooding Piping NJ00339-1193 seepage/piping failure during construction due to poor embankment materials Irene No 0 95 L PGRE R Y 24 ft 147.00 14.00 1930 NJ00339 WELDON BROOK 41.0043 -74.587 NJDEP TOMLINSON MILL DAM NJ S Non-Failure 08/27/2011 Hydrologic/Flooding Sinkhole NJ00627-1186 Sinkhole developed along outlet culvert Irene No 0 Roads 0 L PGRE R Y 11 ft 10.00 NJ00627 BARTON RUN 39.8656 -74.8948 NJDEP MULLICA HILL POND DAM NJ S Non-Failure 08/27/2011 Hydrologic/Flooding Overtopping NJ00639-1189 overtopped, erosion of d/s slope Irene No 0 Roads 0 S PGRE R N 19 ft 10.00 1922 NJ00639 RACCOON CREEK 39.7346 -75.2213 NJDEP SCENIC LAKE DAM NJ L Non-Failure 08/27/2011 Hydrologic/Flooding Piping NJ00678-1191 seepage, portion of d/s slope failed Irene No 0 0 P PGRE R NR 35 ft 96.00 8.00 NJ00678 WALLKILL RIVER-TR 41.1837 -74.5632 NJDEP NEW JERSEY NO NAME # 89 DAM NJ L Failure 08/27/2011 Hydrologic/Flooding Overtopping NJ00736-1192 overtopped, embankment failure Irene No 0 70 L PGRE R NR 15 ft 98.00 10.00 1970 NJ00736 CROSSWICKS CREEK-TR 40.0566 -74.5475 NJDEP DIAMOND MILL POND DAM NJ S Non-Failure 08/27/2011 Hydrologic/Flooding Overtopping NJ00926-1190 overtopped, loss of embankment to corewall Irene No 0 None 0 L PGRE R N 9 ft 24.00 4.00 1937 NJ00926 RAHWAY RIVER 40.7311 -74.3071 NJDEP UNION MILL LAKE DAM NJ S Non-Failure 08/27/2011 Hydrologic/Flooding Sinkhole NJ00971-1185 Sinkhole developed along outlet culvert Irene No 0 Unknown Unknown P RE R N 13 ft 73.00 4.00 NJ00971 BARTON RUN-TR 39.8528 -74.9102 NJDEP SHELBURNE NH L Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NH00052-1148 High flows overtopped the dam,eroded abutments and downstream of cutoff walls and flooded powerhouse Irene 0 0 Bridges 0 P CNPG HC NR 17 ft 960.00 210.00 1906 NH00052 ANDROSCOGGIN RIVER 44.4042 -71.1157 1990 NH DEPARTMENT OF ENVIRONMENTAL SERVICES DAM BUREAU Y CAMPTON POND HYDRO DAM NH H Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NH00130-1143 overtopping of the left side upstream training wall, earthen portion Irene Yes 200 0 Roads 0 F CN H Y 39 ft 650.00 60.00 1890 NH00130 MAD RIVER 43.8619 -71.6325 2004 12:00 AM Y COY PAPER MILL NH S Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NH00140-1144 Water up to decks of plant Irene Yes 0 0 0 P CNPG H Y 33 ft 150.00 17.00 1922 NH00140 SUGAR RIVER 43.3905 -72.3766 NH DEPARTMENT OF ENVIRONMENTAL SERVICES DAM BUREAU 12:00 AM DELLS POND OUTLET DAM NH H Non-Failure 08/28/2011 Hydrologic/Flooding Sinkhole NH00145-1147 Sinkhole developed adjacent to the usptream left spillway abutment wall Irene Yes 0 0 L ER R Y 20 ft 80.00 3.00 1935 NH00145 DELLS BROOK 44.3122 -71.7977 NH DEPARTMENT OF ENVIRONMENTAL SERVICES DAM BUREAU Y GLEN ROAD NH S Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NH00159-1146 EAP activation, dam is overflowing Irene Yes 0 P CNPG H Y 16 ft 10.20 2.00 1988 NH00159 MASCOMA RIVER 43.635 -72.3043 NH DEPARTMENT OF ENVIRONMENTAL SERVICES DAM BUREAU 12:00 AM CUMMINS POND DAM NH L Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NH00462-1145 Local first responders assisted the dam owner with sandbagging the dam's crest to avoid overtopping. Owner also excavated a 20" wide channel away from dam to allow for additional outflow.
Freeboard at the dam reduced to 1" during the height of the storm Irene Yes 0 0 None none 0 P ER R NR 13 ft 1090.00 136.00 1880 NH00462 MASCOMA RIVER 43.7777 -72.0155 2008 NH DEPARTMENT OF ENVIRONMENTAL SERVICES DAM BUREAU 12:00 AM Y LINCOLN SEWAGE LAGOON NH S Non-Failure 08/28/2011 Hydrologic/Flooding Unknown NH00590-1149 Visited the site 8/31/11 from 8am to 8:30 am to inspect river revetment system for damage. High flows caused further erosion of the revetment and completely failed a culvert headwall. Lagoon was not breached. Irene Yes 0 0 0 L ER O NR 19 ft 126.00 10.00 1987 NH00590 NA 44.0372 -71.6741 NH DEPARTMENT OF ENVIRONMENTAL SERVICES DAM BUREAU Y MUDMILL POND DAM DE Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping DE00000-1209 Dam overtopped & caused minor to moderate erosion at the top of the downstream slope along the road edge, along the entire length of the dam. Emergency repairs were made to the roadway. Irene No 0 0 None 0 0.00 DE00000 0 0 MASSEYS MILL POND DAM DE L Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping DE00029-1203 Overtopping caused failure of a training wall in the downstream channel and minor erosion in a few areas at top of downstream embankment along edge of road. No emergency repairs were necessary. Irene No 0 0 None unknown 0 S REPG RF NR 12 ft 490.00 36.00 1933 DE00029 LEIPSIC RIVER 39.2395 -75.6175 GARRISONS LAKE DAM DE H Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping DE00030-1204 Dam started overtopping around 4 am, and overtopping continued until 10 or 11 am. Overtopping flow was confined to one location and due to the clay core of the dam only minor erosion occurred. Irene No 0 0 None 0 S REPG RF N 11 ft 1164.00 86.00 1964 DE00030 LEIPSIC RIVER 39.244 -75.5884 DNREC 12:00 AM BLAIRS POND DAM DE H Non-Failure 08/28/2011 Hydrologic/Flooding Erosion DE00070-1205 Prolonged discharge at a higher than normal rate through a concrete overflow spillway exacerbated erosion of a known void in the soil beneath the spillway. Irene No 0 0 None 0 S REPG RF N 15 ft 611.00 48.00 DE00070 BEAVERDAM BRANCH 38.904 -75.4848 DNREC SNOWS BROOK DAM NH H Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NH00901-1150 Reservoir level came to within several inches of overtopping Irene Yes 0 0 0 L CN R Y 17 ft 40.80 5.00 1976 NH00901 SNOWS BROOK 43.95 -71.5047 NH DEPARTMENT OF ENVIRONMENTAL SERVICES DAM BUREAU Y WAPPINGERS FALLS NY H Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY00003-1314 EAP activated on 8/28 due to high flows, penstock damage. Hurricane Irene Irene Yes L MS HPNR Y 20 ft 700.00 100.00 1872 NY00003 WAPPINGER CREEK 41.6006 -73.92 1992 NYS DEC MONROE RECREATION LAKE DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY00036-1300 overtopped, downstream face missing some stones
Hurricane Irene Irene No L OTRE R Y 14 ft 68.00 13.00 1936 NY00036 RAMAPO RIVER 41.3242 -74.1869 NYS DEC LAKE COHASSET UPPER DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY00042-1299 overtopped and had minor damage
Hurricane Irene Irene No S R Y 25 ft 373.00 37.00 1924 NY00042 ARDEN BROOK 41.2761 -74.1142 NYS DEC UPPER WARWICK DAM NY L Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY00063-1292 dam was experiencing high flows and there was evidence that the dam had overtopped. Hurricane Irene.
Irene No L RE S N 40 ft 80.00 5.00 1912 NY00063 TR-WAWAYANDA CREEK 41.2289 -74.3608 NYS DEC NORMANSKILL NY H Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY00088-1312 Chief of police notified Dam Safety that the EAP has been activated due to high water levels. Hurricane Irene Irene Yes L CB HSRFP Y 39 ft 5000.00 430.00 1916 NY00088 NORMANS KILL 42.7113 -73.9607 NYS DEC SCHAGHTICOKE NY S Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY00118-1322 Brookfield Renewable Power (Owner) activated EAP Condition C ¿ High Flow, non-failure. Hurricane Irene Irene Yes P CNPG H Y 28 ft 795.00 150.00 1909 NY00118 HOOSIC RIVER 42.8936 -73.5887 2000 NYS DEC JOHNSONVILLE NY H Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY00119-1323 Brookfield Renewable Power (Owner) activated EAP Condition C ¿ High Flow, non-failure. Dam did not overtop. Hurricane Irene Irene Yes P CNPG H Y 39 ft 6430.00 450.00 1909 NY00119 HOOSIC RIVER 42.9197 -73.5084 1989 NYS DEC CLARK MILLS UPPER NY L Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY00120-1321 EAP has been activated because of high flows during Hurricane Irene Irene Yes P CNCB HC NR 23 ft 875.00 89.00 1904 NY00120 BATTENKILL RIVER 43.1185 -73.555 1990 NYS DEC VISCHER FERRY NY H Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY00170-1311 High water and seepage observed on earthen embankment. Hurricane Irene Irene Yes S CNPG HN Y 30 ft 27400.00 1050.00 1913 NY00170 MOHAWK RIVER 42.8048 -73.8455 1990 NYS DEC GILBOA DAM NY H Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY00176-1287 Record lake level behind the dam. Hurricane Irene. Irene Yes L MSRE S Y 183 ft 95575.00 1159.00 1926 NY00176 SCHOHARIE CREEK 42.3911 -74.45 NYS DEC INDIAN KILL RESERVOIR DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY00242-1309 Dam overtopped Hurricane Irene Irene Roads LPS RE S Y 23 ft 728.00 52.00 1958 NY00242 INDIAN KILL 41.2367 -74.2083 NYS DEC HELDERBERG LAKE DAM NY H Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY00276-1294 High water during Hurricane Irene. Dam did not overtop. Irene Yes P RS Y 35 ft 330.00 27.00 1944 NY00276 TR-ONESQUETHAW CREEK 42.5972 -74.0125 NYS DEC GOSHEN RESERVOIR #1 DAM NY H Non-Failure 08/28/2011 Hydrologic/Flooding Spillway Erosion/Head Cutting NY00488-1291 spillway channel erosion, left embankment.
Hurricane Irene. Irene No L RE S Y 37 ft 867.00 66.00 1963 NY00488 TR-RIO GRANDE CREEK 41.3833 -74.3333 NYS DEC ELK LAKE DAM NY L Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY00520-1310 Under construction -Damaged. Temporary coffer dam was overtopped. A large bog has floated into the existing spillway partially blocking the spillway. The basin received 10" on rain over approx. 6 hrs. Hurricane Irene
Irene No P ERTC R N 23 ft 4200.00 525.00 1965 NY00520 TR-THE BRANCH 44.0225 -73.8308 NYS DEC BATAVIA KILL WATERSHED DAM #4A NY H Non-Failure 08/28/2011 Hydrologic/Flooding Spillway Erosion/Head Cutting NY00570-1295 Erosion observed on both auxiliary spillways.
Hurricane Irene. Irene L RE C Y 77 ft 2928.00 10.00 1967 NY00570 BATAVIA KILL 42.3322 -74.2478 2013 NYS DEC MERRIEWOLD LAKE DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY00572-1303 High water from Hurricane Irene Irene No L RE R Y 50 ft 96.00 10.00 1953 NY00572 SATTERLY CREEK 41.3753 -74.1853 NYS DEC BATAVIA KILL WATERSHED DAM #3 NY H Non-Failure 08/28/2011 Hydrologic/Flooding Spillway Erosion/Head Cutting NY00608-1297 Right auxiliary spillway eroded down by 50 feet but has not reached the control section of the spillway. Hurricane Irene. Irene No L RE C Y 74 ft 1415.00 5.00 1970 NY00608 TR-BATAVIA KILL 42.3211 -74.2325 NYS DEC MCGREGOR DAM NY H Non-Failure 08/28/2011 Hydrologic/Flooding Spillway Erosion/Head Cutting NY00614-1318 Peak flow was 4 ft over tertiary spillway. High flows scoured 6" to 12' of the sandstone bedrock at the base of the dam due to the impact of the spillway flow. Continued minor scouring beneath a number of concrete splash aprons. Hurricane Irene Irene No S CB R Y 37 ft 735.00 147.00 1968 NY00614 CHAZY RIVER 44.8689 -73.675 NYS DEC BLENHEIM - GILBOA UPPER NY H Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY00691-1289 Record high water behind dam. Hurricane Irene. Irene Yes S RE HR Y 170 ft 18500.00 355.00 1974 NY00691 SCHOHARIE CREEK 42.4451 -74.4384 NYS DEC BLENHEIM - GILBOA LOWER NY H Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY00692-1288 Record high water levels. Hurricane Irene. Irene Yes S RECNPG HR Y 165 ft 16330.00 430.00 1974 NY00692 SCHOHARIE CREEK 42.4538 -74.4555 NYS DEC MINE LAKE DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY00767-1306 dam had overtopped 6-12", erosion but structurally sound. Hurricane Irene Irene Yes F CN TSR Y 22 ft 235.00 25.00 1845 NY00767 BROOKS HOLLOW CREEK 41.2045 -74.0236 1982 NYS DEC POPOLOPEN LAKE DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY00768-1305 Overtopped at abutments but is still structurally sound. Hurricane Irene Irene Yes F RECNMS TSR Y 32 ft 1030.00 0.00 NY00768 POPOLOPEN CREEK 41.3553 -74.0525 1948 NYS DEC SUMMIT STREET LAKE DAM NY H Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY00847-1325 seepage though downstream embankment and high impoundment water level. Hurricane Irene Irene Yes L OT R Y 28 ft 264.00 16.00 1914 NY00847 AGAWAMUCK CREEK 42.2464 -73.6481 NYS DEC UPPER CANDOR DAM NY L Non-Failure 08/28/2011 Hydrologic/Flooding Piping NY00938-1282 Seepage/ piping in dam foundation seems to have increased and dam may have settled. Irene No L O N 7 ft 55.00 11.00 1920 NY00938 CATATONK CREEK 42.235 -76.3428 NYS DEC WINNISOOK LAKE DAM NY L Non-Failure 08/28/2011 Hydrologic/Flooding Erosion NY00952-1290 fill eroded exposing original laid-up stone dam.
Hurricane Irene. Irene No P RE R Y 42 ft 135.00 6.00 NY00952 ESOPUS CREEK 42.0156 -74.4119 NYS DEC POTAKE LAKE DAM NY H Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY00970-1308 EAP activated because of high water levels. Damage to downstream culverts but not dam. Hurricane Irene Irene Yes U RE RS Y 22 ft 1149.00 93.00 1800 NY00970 TR-RAMAPO RIVER 41.1417 -74.2111 NYS DEC DAVIES LAKE DAM NY L Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY00976-1284 County ¿ received report that dam was overtopping. Dam Safety contacted owner and was advised the dam was not damaged. Hurricane Irene. Irene No P RE R Y 10 ft 160.00 26.00 1956 NY00976 DAVIES BROOK 41.6183 -74.6031 NYS DEC MOUNTAINDALE RECREATION LAKE DAM NY L Failure 08/28/2011 Hydrologic/Flooding Overtopping NY00982-1285 Dam overtopped and breached
Hurricane Irene. Irene No L RE R N 16 ft 66.00 11.00 1973 NY00982 BRADEN BROOK 41.6969 -74.5181 NYS DEC MIDDLE GREENWICH DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Spillway Chute Failure High Reservoir Level NY01070-1326 EAP has been activated due to high flows. There is water flowing though some cracks on the dam. Region 5 (RG) inspected dam on 8/30 and observed concrete wall has shifted. Hurricane Irene Irene Yes P H N 10 ft 80.00 9.00 1902 NY01070 BATTEN KILL 43.0864 -73.4956 NYS DEC BARTLETT POND DAM NY L Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY01114-1319 Dam overtopped by estimated 6" of water. Hurricane Irene Irene No L RE S N 14 ft 1447.00 70.00 1918 NY01114 BARTLETT BROOK 44.1 -73.5117 NYS DEC RED HOOK MILLS DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY01179-1313 dam was overtopped and now seeping. Hurricane Irene Irene No P OT R N 26 ft 104.00 12.00 NY01179 SAW KILL 42.0106 -73.8728 NYS DEC LOCH LYALL DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY01201-1317 Dam overtopped. Local erosion DS face. Big trees on dam now have exposed roots. Hurricane Irene Irene No P R N 12 ft 98.00 19.00 1950 NY01201 INDIAN BROOK 41.4156 -73.9072 NYS DEC GUYMARD LAKE DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Sinkhole NY01219-1286 sinkhole noted, 2 ft diameter, over 4 ft deep, between road and fence near center of dam. Irene No LP RE R N 35 ft 600.00 33.00 1858 NY01219 TR-NEVERSINK RIVER 41.4319 -74.5958 NYS DEC BELVEDERE LAKE DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY01270-1283 Report that water was flowing over 4 feet over the dam.
Hurricane Irene. Irene No P OTRE R N 20 ft 210.00 26.00 1900 NY01270 TR-CHERRY VALLEY CREEK 42.745 -74.7603 NYS DEC DUCK HOLE DAM NY L Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY01377-1293 the right log crib abutment completed washed out allowing impoundment to drain. Hurricane Irene. Irene S TC R N 14 ft 380.00 58.00 NY01377 COLD RIVER 44.14 -74.1083 NYS DEC PENFIELD POND DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY01488-1320 Left side dam had overtopped and dam suffered erosion to the left of the spillway. Hurricane Irene Irene No P RE PR Y 15 ft 1100.00 150.00 1980 NY01488 PUTNAM CREEK 43.9219 -73.5356 NYS DEC ECHO LAKE DAM NY L Failure 08/28/2011 Hydrologic/Flooding Unknown NY13189-1800 the dam appears to have failed. 9/23/11 failure confirmed by DEC inspection. Hurricane Irene. Irene No 0 0 P MS R NR 12 ft 144.00 16.00 1880 NY13189 ARDEN BROOK 41.2717 -74.1406 SKY VIEW POND DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY13225-1302 overtopped and exit channel eroded, only minor damage
Hurricane Irene Irene No P RE R N 24 ft 25.00 3.00 1952 NY13225 TR-RAMAPO RIVER 41.3133 -74.1653 NYS DEC SCHOONMAKER LAKE DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY13232-1304 Owner notified dam was overtopping during 8/28/11 week-end. Minor erosion on dam where it overtopped (8/31/2011). Headcutting has progressed to the mortared stone upstream face. Hurricane Irene Irene Yes P EROT R Y 16 ft 16.00 2.00 1912 NY13232 PERRY CREEK 41.4047 -74.1514 NYS DEC LOWER CRAGSTON LAKE DAM NY H Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY13539-1315 Dam overtopped by less than 6", minor erosion experienced downstream of core wall at toe. Hurricane Irene Irene No F RE R N 10 ft 0.00 NY13539 UNKNOWN 41.3538 -73.9774 NYS DEC BREAKNECK BROOK DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding High Reservoir Level NY13564-1316 Increased seepage identified by owner NYS Parks. High water during Hurricane Irene. Irene No R N 18 ft 48.00 5.00 NY13564 BREAKNECK BROOK 41.4489 -73.9633 NYS DEC IDA LAKE DAM NY L Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY13740-1324 DEC engineer inspected and observed that there has been minor overtopping. Hurricane Irene Irene No L OT R N 12 ft 95.00 10.00 1912 NY13740 POESTENKILL 42.7214 -73.6728 NYS DEC WILLIAM CURTIS DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Other NY14790-1301 possible additional damage to already poor condition. Hurricane Irene
Irene No P RE R Y 15 ft 10.00 2.00 1898 NY14790 PERRY CREEK 41.4075 -74.1544 NYS DEC LILY POND DAM NY S Non-Failure 08/28/2011 Hydrologic/Flooding Overtopping NY15089-1307 Overtopped but little or no damage. Overtopped at left abutment of the dam, appears to be an auxiliary spillway. Hurricane Irene Irene No P RE O Y 10 ft 10.00 1949 NY15089 TROUT BROOK 41.2822 -74.2461 NYS DEC LAKE PLACIDA PA H Non-Failure 09/07/2011 Hydrologic/Flooding Overtopping Erosion PA01711-3217 OVERTOPPING IN TROPICAL STORM CAUSED MINOR DAMAGE TO EMBANKMENT ON RIGHT & LEFT SIDES OF SPILLWAY. TS Lee No 0 REHAB AND LARGER SPILLWAY PROJECT WAS COMPLETED. CONSTRUCTION CERTIFICATION REC'D IN 2015. P RE R Y 6 ft 18.00 3.00 1910 PA01711 TR CONOY CREEK 40.1531 -76.5894 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety MARTINS CREEK (PA-467) PA H Non-Failure 09/08/2011 Hydrologic/Flooding Overtopping Erosion PA00054-3224 OVERTOPPING IN TROPICAL STORM DAMAGED RIGHT SIDE OF SPILLWAY, TOP OF DAM, AND DOWNSTREAM SLOPE. TS Lee Yes 0 83 RIGHT SIDE OF SPILLWAY REPAIRED WITH CONCRETE WALL AND SPLASH PAD AS PER 2013 INSPECTION. L RE C Y 52 ft 180.00 1.00 1967 PA00054 TR MARTINS CREEK 41.7647 -75.7467 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 1 DAY PA Dam Safety CRAIGS POND DAM DE Non-Failure 09/08/2011 Hydrologic/Flooding Overtopping DE00000-1208 Overtopping caused major damage to the roadway and downstream slope of the dam. Approximately 400 feet of the downstream slope and one lane of the roadway were washed out, but the dam was not totally breached.
No 0 0 $100,000 to $500,000 0 0.00 DE00000 0 0 12:00 AM HUDSON POND DAM DE H Non-Failure 09/08/2011 Hydrologic/Flooding Overtopping DE00023-1207 overtopped around 6 pm on 9/08/2011. 0 0 0 S REPG RF N 9 ft 169.00 20.00 1958 DE00023 CEDAR CREEK 38.8406 -75.4343 DNREC 12:00 AM HEARNS POND DAM DE H Non-Failure 09/08/2011 Hydrologic/Flooding Overtopping DE00060-1206 Overtopping occurred in two separate low areas on the crest of the dam. Minor erosion occurred on the grass downstream slope near the left abutment, and some minor displacement of riprap occurred on the downstream slope near the right abutment. No 0 0 0 S REPG RF N 14 ft 1434.00 24.00 1912 DE00060 CLEAR BROOK 38.6793 -75.594 2002 DNREC 12:00 AM SOCIAL SECURITY WOODLAWN DAM MD Non-Failure 09/08/2011 Unknown Spillway Chute Failure MD00471-3087 Concrete chute spillway on earth embankment undermined, resulting in spillway damage and loss of embankment material. Yes RE 13 ft 10.00 0.00 MD00471 39.3108 -76.7248 MD DAM SAFETY MDE Dam Safety Program BIG ELK LAKE PA S Non-Failure 09/08/2011 Hydrologic/Flooding High Reservoir Level PA00056-3223 EAP EVACUATIONS. OWNER PUT SANDBAGS, TWO LAYERS, ACROSS TOP OF DAM. WATER ROSE ABOVE FIRST LAYER. TS Lee Yes 0 15 6 0 None A DETAILED BREACH ANALYSIS IN 2016 USING LIDAR SHOWED DOWNSTREAM HOMES ARE NOT IMPACTED BY A DAM FAILURE. P MSREST RS Y 12 ft 740.00 79.00 1860 PA00056 ELK LAKE STREAM 41.7528 -75.9547 2006 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 1 DAY PA Dam Safety SULLIVAN PA L Failure 09/08/2011 Hydrologic/Flooding Overtopping PA00358-3202 DAM IN MILDRED VILLAGE FAILED DURING TROPICAL STORM LEE CAUSING A SWATH OF DAMAGE ALONG RTE 220. TS Lee No 0 0 0 0 Roads Unknown DAM REMOVAL WAS APPROVED IN 2012 AND STREAM RESTORED TO FREE-FLOWING CONDITION. 100 P RE R NR 11 ft 123.00 3.00 1948 PA00358 BIRCH CREEK 41.4767 -76.3767 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 1 DAY No PA Dam Safety MILL PA H Non-Failure 09/08/2011 Hydrologic/Flooding Overtopping PA00711-3215 EAP EVACUATIONS DUE TO OVERTOPPING INUNDATION. AT THE TIME IT WAS UNCERTAIN WHETHER DAM HAD FAILED. TS Lee Yes 0 REMOVAL OF THE DAM IS SCHEDULED IN 2018 S MS OR Y 25 ft 24.00 1.00 1937 PA00711 HOSPITAL CREEK 40.3286 -76.1114 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety LOCH ALSH RESERVOIR PA H Non-Failure 09/08/2011 Hydrologic/Flooding Overtopping PA00935-3191 TROPICAL STORM LEE CAUSED OVERTOPPING OF DAM WITH 5 INCHES RAINFALL IN 3 HOURS TS Lee Yes 0 0 L MSREST R Y 16 ft 41.00 6.00 1915 PA00935 TR WISSAHICKON CREEK 40.1558 -75.2047 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 1 DAY PA Dam Safety FARMVILLE DAM VA S Non-Failure 09/23/2011 Hydrologic/Flooding Spillway Chute Failure VA14717-1141 Excessive rainfall caused spillway to fail, dam did not fail No 0 0 0 P RE R N 22 ft 300.00 12.00 VA14717 TANYARD BR. OF BRIERY CREEK 37.2383 -78.42 DCR 12:00 AM LAKE HAZLE DAM MS H Non-Failure 09/26/2011 Deterioration or Poor Condition Spillway Pipe Failure Sinkhole MS00503-1120 Sinkhole developed near left abutment due to failure of large CMP culvert which diverts drainage water around dam Yes 0 0 None 0 L RE R Y 25 ft 390.00 26.00 1925 MS00503 JOHNSON CREEK TRIB OF JONES CREEK 31.8667 -90.4033 MS Dept. of Environmental Quality HIDDEN VALLEY LAKE DAM IN H Non-Failure 12/06/2011 Structural Stability Slope Stability IN00100-1210 slump on the downstream slope Yes 0 0 P RE R N 135 ft 7750.00 139.00 1973 IN00100 DOUBLELICK RUN 39.1547 -84.8364 IDNR Y MADER DAM NO 1 NE L Failure 01/01/2012 Seepage/Internal Erosion Piping NE01099-2844 No 0 0 0 0 None Unknown P RE I NR 25 ft 238.00 21.00 1947 NE01099 TR-INDIAN CREEK 42.987 -103.814 NE DNR No NE DNR SPRING LAKE DAM MS L Failure 01/01/2012 Deterioration or Poor Condition Spillway Pipe Failure MS00128-1864 CONDUIT FAILED VERY SLOWLY OVER 2-5 YEARS. EMBANKMENT HAS SLOWLY COLLAPSED OVER CONDUIT. No 0 0 P RE R NR 26 ft 480.00 93.00 1971 MS00128 LITTLE MOUNGERS CREEK 30.5933 -88.6933 MS Dept. of Environmental Quality DOW LAKE DAM OH H Non-Failure 01/13/2012 Structural Stability Slope Stability OH00086-1780 Shallow slide on downstream slope Yes 0 0 None none 0 S RE R Y 66 ft 7018.30 161.00 1959 OH00086 STROUDS RUN 39.33 -82.01 DEPARTMENT OF NATURAL RESOURCES 12:00 AM CLEAR SPRING LAKE DAM TX H Non-Failure 01/15/2012 Hydrologic/Flooding Overtopping TX02715-2713 OVERTOPPING, DID NOT BREACH. CONSIDERABLE SPILLWAY DAMAGE P RE R N 19 ft 350.00 25.00 1950 TX02715 GREENS CREEK 30.1127 -97.4648 TCEQ TX DEQ GEORGETOWN LOW HEAD DAM OH L Failure 01/18/2012 Deterioration or Poor Condition Other OH00000-1788 Collapse of large sections of dam No 0 0 None PG S 15 ft 0.00 1938 OH00000 WHITE OAK CREEK 0 0 ODNR MAPLE VALLEY LAKE DAM OH S Non-Failure 01/27/2012 Deterioration or Poor Condition Spillway Pipe Failure OH02514-1787 Leak along spillway conduit at joint near outlet No 0 0 None NONE 0 P RE R N 27 ft 22.90 2.00 1970 OH02514 TRIBUTARY TO SOUTH FORK SUGAR CREEK 40.55 -81.63 DEPARTMENT OF NATURAL RESOURCES 12:00 AM WEDDING LAKE DAM OH L Non-Failure 01/27/2012 Seepage/Internal Erosion Piping OH02535-1786 Piping along spillway conduit caused severe erosion through dam Yes 0 0 None none 0 RE R N 15 ft 119.00 0.00 1970 OH02535 TRIBUTARY TO BOKES CREEK 40 -83 DEPARTMENT OF NATURAL RESOURCES 12:00 AM HENRY HUDSON DAM MS L Failure 02/22/2012 Seepage/Internal Erosion Spillway Pipe Failure MS03469-1440 DAM FAILED AT THE PRIMARY SPILLWAY CONDUIT. IT APPEARED FAILURE WAS THE RESULT OF SEEPAGE ALONG THE 24 INCH CONDUIT THRU THE DAM. No 0 0 None P RE R NR 17 ft 287.00 24.00 1999 MS03469 TR.-TICK CREEK 31.4153 -89.52 MS Dept. of Environmental Quality MUSKINGUM RIVER LOCK AND DAM NO. 7 OH S Non-Failure 02/23/2012 Deterioration or Poor Condition Other OH00697-1782 Partial Failure of Sheet Piling Dam Yes 0 0 None none 0 S OTOT R Y 15 ft 2999.00 442.00 1841 OH00697 MUSKINGUM RIVER 39.64 -81.85 DEPARTMENT OF NATURAL RESOURCES 12:00 AM NESBITT PA H Non-Failure 02/23/2012 Seepage/Internal Erosion Settlement PA00449-3189 A DEPRESSION, 10' ACROSS & 3' DEEP, FOUND ON UPSTREAM SLOPE DURING MAJOR REHAB PROJECT No 0 0 FURTHER DRAWDOWN WAS INITIATED, SITE WAS MONITORED, AND DEPRESSION INVESTIGATED BY EXCAVATION. U MSREST HS Y 101 ft 5034.00 116.00 1903 PA00449 SPRING BROOK 41.3264 -75.6536 2012 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety LAKE MINNETOSKA DAM MD L Non-Failure 03/01/2012 Unknown Spillway Chute Failure MD00154-3091 Concrete chute spillway on earth embankment undermined and partially failed during rain event. No P RE R NR 10 ft 26.00 0.00 1924 MD00154 HERRINGTON RUN 39.4563 -79.4648 MD DAM SAFETY MDE Dam Safety Program LAUREL LAKE DAM OH S Non-Failure 03/16/2012 Seepage/Internal Erosion Piping OH02153-1784 Piping through saddle dam Yes 0 0 None none 0 P RE R N 20 ft 88.80 8.00 1955 OH02153 TRIBUTARY TO SAMS CREEK 40.56 -82.77 DEPARTMENT OF NATURAL RESOURCES 12:00 AM PINE ACRES LAKE DAM OH S Failure 03/19/2012 Seepage/Internal Erosion Piping OH00284-1783 Piping along spillway conduit caused breach of dam Yes 0 0 None 33 P RE R N 22 ft 43.20 5.00 1965 OH00284 TRIBUTARY TO WOLF RUN 38.93 -82.27 DEPARTMENT OF NATURAL RESOURCES 12:00 AM LAKE MCINTYRE TX L Non-Failure 03/23/2012 Structural Stability Slope Stability TX03844-1380 Slide 65 feet long from crest of dam to 14 feet down. Seepage in scarp No 0 0 Other 0 P RE P NR 35 ft 355.00 25.00 1963 TX03844 TR-PALO PINTO CREEK 32.585 -98.3183 TCEQ WALKER CREEK DAM #1 MI L Failure 04/13/2012 Malfunction of Equipment/Gate Gate/Valve Failure Sinkhole MI00411-1327 Stoplogs failed and drained the impoundment. Also, there was a sinkhole developing on the upstream slope in the vicinity of the CMP pipe riser. No 0 0 None none 280 RE R NR 17 ft 850.00 41.00 1965 MI00411 WALKER CREEK 43.7167 -84.9917 Michigan DEQ Y MCMAHON CA S Non-Failure 04/17/2012 Manmade Action Spillway Pipe Failure CA00701-1900 Sudden closure d/s valve while u/s valve was open, the hydraulic pressure caused an 8-inch section of PVC pipe to rupture. No 0 0 None P RE IS NR 52 ft 878.00 26.00 1957 CA00701 MAXWELL CREEK 37.6997 -120.201 Division of Safety of Dams DRUID HILL LAKE MD H Non-Failure 04/17/2012 Unknown Under Investigation MD00109-1860 Unexplained settlement ds slope. Repair of pot holes in Interstate Highway constructed in 1950s on dam embankment, Highway Department not aware of dam under roadway. To date evidence suggests piping in dam. Yes 0 0 Roads, Water Supply L RE S Y 118 ft 1880.00 48.00 1871 MD00109 OFFSTREAM-JONES FALLS 39.3186 -76.6315 1999 MD Dam Safety MD Dam Safety THE MEADOWS DAM OH S Failure 05/10/2012 Seepage/Internal Erosion Piping OH00935-1785 Piping along spillway conduit caused breach of dam Yes 0 0 Water/sewer lines 30 RE C N 22 ft 68.00 0.00 1975 OH00935 TRIBUTARY TO MUD BROOK 41.17 -81.46 DEPARTMENT OF NATURAL RESOURCES 12:00 AM BROOKSTONE LAKE DAM MS H Failure 06/10/2012 Seepage/Internal Erosion Piping Spillway Riser Failure MS03665-1441 PIPING THROUGH CONDUIT CLOSE TO RISER No 0 0 None 27 P RE R Y 18 ft 56.10 6.00 2007 MS03665 TRIBUTARY OF TRIBUTARY OF BEAR CREEK 32.4861 -90.1675 2013 MS Dept. of Environmental Quality THOMSON DAM NO 5-1/2 MN H Failure 06/20/2012 Unknown Under Investigation MN00604-1861 The right embankment of the headrace canal (called Forbay Lake) leading to the hydro plant failed. Yes 160 Roads X PG HR Y 23 ft 4352.00 375.00 1907 MN00604 ST LOUIS RIVER 46.665 -92.4067 CORUNNA DAM MI S Failure 06/26/2012 Deterioration or Poor Condition Other MI00379-1340 Deterioration of the concrete-capped timber-crib spillway has led to a partial breach in the dam. Yes 0 0 None None 35 L TC R Y 15 ft 80.00 17.00 1843 MI00379 SHIAWASSEE RIVER 42.9857 -84.1179 Michigan DEQ 12:00 AM Y FOSTORIA UPGROUND RESERVOIR NO. 5 OH H Non-Failure 06/26/2012 Structural Stability Slope Stability OH00788-1781 Shallow slide on downstream slope Yes 0 0 None none 0 L RE S Y 36 ft 2900.00 129.00 1958 OH00788 EAST BRANCH PORTAGE RIVER - OFFSTREAM 41.11 -83.44 DEPARTMENT OF NATURAL RESOURCES 12:00 AM MOUNT LAUREL (MUD RUN) PA H Non-Failure 07/11/2012 Structural Stability Cracking PA00690-3198 DURING REHAB, A 100' CRACK DEVELOPED ON THE CREST EXTENDING FROM SPILLWAY TO CENTER OF DAM. Yes 0 0 CONTRACTOR COMPLETED INSTALLING SHEET PILING TO ISOLATE CRACK. PLAN TO MONITOR BY CONSULTANT. 0 L MSRE S Y 39 ft 852.00 48.00 1879 PA00690 MUD RUN 40.7703 -76.2311 2013 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 5:00:00 PM PA Dam Safety BROOKVILLE WATERWORKS PA S Failure 07/17/2012 Hydrologic/Flooding Overtopping PA00422-3188 HEAVY RAINS RESULTED IN 18" OVERTOPPING, WASHED AWAY EARTH DAM D/S OF CONCRETE CORE. No 0 0 0 0 PA DEPT OF HEALTH WARNED D/S HOMES (BORO REFUSED). LATER DAM RAISED W/ WIDER SPILLWAY L RE S Y 24 ft 505.00 18.00 1912 PA00422 NORTH FORK CREEK 41.17 -79.0731 2000 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 12:00:00 AM 1 DAY Yes PA Dam Safety BRAINARD LAKE DAM NJ S Non-Failure 08/22/2012 Seepage/Internal Erosion Piping NJ00152-1400 The seepage was observed on the downstream side of the dam, adjacent to the culvert, flowing not through the culvert but under and through the downstream masonry wall. The lake level had dropped one foot. Yes 0 0 L PGRE R Y 13 ft 152.00 22.00 1840 NJ00152 CRANBURY BROOK 40.3098 -74.5166 NJDEP MIKE WILLIAMS DAM MS S Failure 08/29/2012 Hydrologic/Flooding Overtopping MS00000-1444 OVERTOPPING-AS REPORTED BY OWNER WHO WAS ONSITE AT THE TIME OF FAILURE. 0 0 Roads 135 RE R 18 ft 0.00 2005 MS00000 UNNAMED TRIBUTARY 0 0 MS DEQ LAKE SERENE SOUTHEAST DAM MS H Non-Failure 08/29/2012 Deterioration or Poor Condition Spillway Pipe Failure MS00704-1442 CONDUIT FAILED VERY SLOWLY OVER 2-5 YEARS. EMBANKMENT HAS SLOWLY COLLAPSED OVER CONDUIT. Yes 0 0 P RE R Y 24 ft 1037.00 68.00 1969 MS00704 PERKINS CREEK 31.2931 -89.4333 MS Dept. of Environmental Quality UNKNOWN MS L Failure 08/30/2012 Unknown Unknown MS00000-1862 FAILURE AROUND CONDUIT. EXACT CAUSE UNKNOWN RE 15 ft 0.00 MS00000 0 0 MDEQ PERCY QUINN STATE PARK DAM MS H Non-Failure 08/30/2012 Structural Stability Slope Stability MS00579-1443 LARGE SLIDES DEVELOPED WITH SEEPAGE. DID NOT LEAD TO UNCONTROLLED RELEASE OF POOL. Yes 0 0 None S RE R Y 34 ft 8112.00 700.00 1940 MS00579 TANGIPAHOA RIVER 31.175 -90.5286 1990 MS Dept. of Environmental Quality SANTA CLARA UT H Failure 09/11/2012 Deterioration or Poor Condition Animal Activity UT00443-1865 Internal erosion likely initiated through animal burrows during a heavy precipitation event. Yes 66 $5 million to $10 million 78 L RE C Y 40 ft 70.00 0.00 1919 UT00443 UNNAMED TRIB. TO SANTA CLARA 37.1292 -113.637 BROWN BRIDGE DAM MI H Failure 10/08/2012 Seepage/Internal Erosion Foundation Deficiency MI00544-1460 Investigation determined water pressure destabilized subsurface soils and led to erosion of foundation soils, release of water beneath the control structure and collapse of an earthen embankment beside part of the drawdown structure. PGRE Y 46 ft 2800.00 191.00 1921 MI00544 BOARDMAN RIVER 44.6434 -85.5095 Michigan DEQ Y LOWER KLONDIKE PA H Non-Failure 10/22/2012 Seepage/Internal Erosion Excessive/Increased Seepage PA00751-3210 DURING INSPECTION, ENGINEER OBSERVED WATER FLOWING INTO VOID ON UPSTREAM FACE OF EMBANKMENT. No 0 0 OWNER ADVISED TO INITIATE DRAWDOWN. PROPOSED GROUT REPAIR PLAN DENIED. DAM REMAINS DRAINED. P RE R Y 19 ft 254.00 22.00 1960 PA00751 LEHIGH RIVER 41.2533 -75.4508 2007 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety SPEEDWELL FORGE PA H Non-Failure 10/29/2012 Hydrologic/Flooding Overtopping PA00345-1920 Rising pool threatened to overtop partially breached embankment. At 23:00 hours the lowered embankment was overtopped but the embankment did not fail. Yes 200 0 None none 0 S RE R Y 35 ft 2372.00 106.00 1966 PA00345 HAMMER CREEK 40.2039 -76.3075 PADEP UTE CREEK CO L Non-Failure 11/01/2012 Seepage/Internal Erosion Excessive/Increased Seepage CO01366-2096 Unexpected seepage from dam. P RE S NR 119 ft 429.00 12.00 1976 CO01366 UTE CREEK 39.8394 -106.094 1997 DWR ELKHORN LAKE DAM KY H Non-Failure 11/10/2012 Seismic Cracking KY00113-1480 Magnitude 4.3 earthquake resulted in potential new cracks on the structure and increased seepage at the toe, right side. No 0 0 None none 0 L PG S NR 40 ft 16.00 1930 KY00113 ELKHORN CREEK 37.1683 -82.635 DOW Y NORTHGLENN TERMINAL CO S Non-Failure 11/11/2012 Deterioration or Poor Condition Spillway Pipe Failure CO02247-2093 Uncontrolled leakage from deteriorated outlet conduit. Sealed with an inflatable bulkhead. L RE S Y 35 ft 147.00 9.00 1981 CO02247 BIG DRY CREEK-OS 39.8979 -105.013 DWR GAYNOR CO S Non-Failure 11/28/2012 Seepage/Internal Erosion Excessive/Increased Seepage CO00284-2089 Previously unobserved seepage form beneath outlet structure. Sealed temporrily and heightened survelience until repairs are made. L RE IR Y 10 ft 840.00 70.00 CO00284 BOULDER CREEK-OS 40.1225 -105.11 1960 DWR MADISON BAPTIST FELLOWSHIP DAM MS L Non-Failure 12/27/2012 Deterioration or Poor Condition Animal Activity MS00000-1863 SEEPAGE DUE TO ANIMAL BURROWS. No 0 0 None RE R 8 ft 0.00 MS00000 33 -90 MDEQ BYLLESBY VA H Non-Failure 01/31/2013 Hydrologic/Flooding Overtopping VA03501-1540 Severe storms caused water to flow over the dam and flashboards, causing the water pressure to build up to potentially unsafe levels behind the dams. The flashboards are designed to give way but in this case, they needed to be removed by hand. Yes U PGCN HR Y 63 ft 2034.00 242.00 1912 VA03501 NEW RIVER 36.7858 -80.9336 1993 DCR Y BUCK VA H Non-Failure 01/31/2013 Hydrologic/Flooding Overtopping VA03502-1542 Severe storms caused water to flow over the dam and flashboards, causing the water pressure to build up to potentially unsafe levels behind the dams. The flashboards are designed to give way but in this case, they needed to be removed by hand. Yes U PGCN HR Y 45 ft 708.00 68.00 1912 VA03502 NEW RIVER 36.8078 -80.9386 1993 DCR Y RINGTOWN NO 5 PA H Non-Failure 03/28/2013 Seepage/Internal Erosion Excessive/Increased Seepage Erosion PA00659-3197 UNCONTROLLED SEEPAGE & EROSION OBSERVED AT TOE OF DAM. No 0 0 OWNER DIRECTED TO BEGIN DRAWDOWN, STOCKPILE SAND & STONE DRAIN MATERIAL, & PROVIDE 24-HR SURVEILLANCE. L RE S Y 62 ft 1200.00 38.00 1914 PA00659 DRESHER RUN 40.8428 -76.2475 2011 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety LAKE JOHN CO S Non-Failure 04/01/2013 Other Other CO00993-2088 Caretaker noticed a hole in the ice on the reservoir near the dam. Potential issue with seepage and piping resulting in the flow of water near this location. Performed field work and determined it did not appear to be a seepage related issue. S RE RF Y 27 ft 16128.00 612.00 1957 CO00993 N FK NORTH PLATTE-TR 40.7672 -106.462 DWR MINSI LAKE PA H Non-Failure 04/01/2013 Deterioration or Poor Condition Spillway Chute Failure PA00788-3193 A LARGE SPALL CAME OFF THE SPILLWAY FLOOR SLAB. No 0 0 LAKE DRAWN DOWN BY 2.5 FT & IN AUGUST CONCRETE REPLACED IN SPALLS. TOTAL REHAB. IS PLANNED. S RE R Y 27 ft 1793.00 117.00 1970 PA00788 EAST BRANCH MARTINS CREEK 40.9117 -75.1697 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety WHITE TAIL LAKE DAM IN S Non-Failure 04/03/2013 Deterioration or Poor Condition Spillway Pipe Failure IN03497-1560 progressive failure of its principal spillway pipe
CMP deteriorated creating sinkhole on d/s slope No 0 0 None P RE R N 27 ft 509.00 32.00 1964 IN03497 STONE COE CREEK 38.4172 -87.225 IDNR BONG RECREATION AREA 8 WI L Non-Failure 04/12/2013 Hydrologic/Flooding Spillway Pipe Failure WI01149-1580 Water breached the dam's overflow pipe. High water has also washed away the soil surrounding the pipe. Yes 0 0 Roads 0 S RE R N 10 ft 900.00 158.00 1972 WI01149 TR. BRIGHTON CREEK 42.625 -88.1139 2015 WIDNR OXFORD NC H Non-Failure 05/05/2013 Malfunction of Equipment/Gate Gate/Valve Failure NC00329-1601 Heavy rainfall resulted in opening of gates and one of the gates would not fully open. Remote control system malfunction, origin not yet determined or reported No 0 P PGCNRE H Y 122 ft 127500.00 4110.00 1928 NC00329 CATAWBA RIVER 35.8214 -81.1922 Y ALLENDALE LAKE DAM IN L Non-Failure 05/08/2013 Deterioration or Poor Condition Spillway Pipe Failure Sinkhole IN03121-1602 A sinkhole in the embankment developed over the principal spillway pipe. After the pipe was camera inspected, the engineer determined that the metal pipe needed to be replaced immediately No 0 P RE R N 32 ft 135.00 8.00 1981 IN03121 UNNAMED TRIBUTARY BUCKHART CREEK 39.4039 -86.1231 IDNR MASHBURN MILLPOND DAM (LAKE ALICE) GA L Failure 05/19/2013 Hydrologic/Flooding Overtopping GA02000-1620 Heavy rainfall with report of up to 7 inches. The breach occurred in the center of the dam and included the principal spillway pipe. No Roads P RE R NR 25 ft 108.00 0.00 1930 GA02000 LITTLE RIDGE CREEK 34.1933 -84.1244 GA-SAFE DAMS PROGRAM 12:00 AM Y RENWICK DAM ND H Non-Failure 05/21/2013 Hydrologic/Flooding High Reservoir Level ND00054-1940 Watershed received widespread 4-6 inches of rain on May 20, 2013. (See attached for additional description.) Yes 1300 0 L RE CR Y 49 ft 11658.00 223.00 1962 ND00054 TONGUE RIVER 48.7779 -97.7494 NDSWC Y OLSON DAM ND H Non-Failure 05/21/2013 Hydrologic/Flooding High Reservoir Level ND00056-1941 Watershed received 4-6 inches of rain on May 20, 2013. The reservoir was already full from heavy late season snow and late season snowmelt runoff. Water flowed through both of the dam's earthen auxiliary spillways. See additional remarks below. Yes 0 0 None L RE C Y 74 ft 1077.00 7.00 1957 ND00056 TONGUE RIVER-TR 48.7304 -97.9466 1985 NDSWC BOURBANIS DAM ND S Non-Failure 05/21/2013 Hydrologic/Flooding High Reservoir Level ND00083-1942 Watershed received 4-6 inches of rain on May 20, 2013. The reservoir was already full from heavy late season snow and late season snowmelt runoff. Water flowed through the dam's earthen auxiliary spillway on May 21-22, 2013 and again on May 31, 2013. Yes 0 0 None L RE CF N 76 ft 1502.10 9.00 1957 ND00083 TONGUE RIVER-TR 48.7844 -97.9801 1984 NDSWC LAKE FERRELL DAM MO Non-Failure 05/31/2013 Hydrologic/Flooding Overtopping MO00000-1640 approximately a 20 to 30 foot long section of the dam overtopped. Damage was minimal. RE 30 ft 0.00 MO00000 39 93 LITTLE KING RANCH CO S Non-Failure 06/01/2013 Seepage/Internal Erosion High Reservoir Level CO00712-2090 Dam with absentee owner. Water level rose well above restricted level during spring runoff, resulting in heavy seepage from foundation and abutments. Water commissioner directed to control water level as possible. P RE R Y 65 ft 1570.00 52.00 1968 CO00712 BUFFALO CREEK 40.2617 -106.113 DWR MILLSTONE PA L Non-Failure 06/01/2013 Unknown Overtopping PA00000-3228 CONCRETE SLAB AT THE BASE OF DAM HAS MOVED 1 TO 2 FT, COMPROMISING THE DAMS STABILITY 0 0 FEDERAL DAM WITH NO STATE JURISDICTION. OWNER NOTIFIED CAMPGROUND DOWNSTREAM. F RECN F 5 ft 0.00 PA00000 EAST BRANCH MILLSTONE CREEK 41.2406 -79.0454 PADEP PA Dam Safety MONTGOMERY CO H Non-Failure 06/05/2013 Seepage/Internal Erosion Excessive/Increased Seepage CO00372-2092 New seepage (near 1 cfs) at toe of rockfill dam. Increased monitoring, performed failure modes analysis. It was hypothesized that it was melting ice from within the rockfill of this high altitude dam after an abnormally wet and cold spring. L ER S Y 112 ft 6100.00 95.00 1956 CO00372 MIDDLE FORK S. PLATTE 39.3533 -106.074 DWR MISSION - SANDY SPRINGS LAKE DAM GA Non-Failure 06/05/2013 Hydrologic/Flooding Spillway Pipe Failure Slope Stability GA00000-1660 Occurred during a heavy rainfall event but included pipe failure and slope instability - see the attached report for more detail. No 100 0 Roads 13 0.00 GA00000 0 0 Y MORRIS DAM NC S Non-Failure 06/07/2013 Hydrologic/Flooding Overtopping NC00021-1683 Dam overtopped during passage of TD Andrea No 0 0 None 0 P RE P N 12 ft 153.00 0.00 NC00021 JUNIPER CREEK 35.379 -79.132 WHISPERING WOODS GOLF COURSE DAM NC H Non-Failure 06/07/2013 Deterioration or Poor Condition Spillway Pipe Failure Sinkhole NC05358-1682 Sink hole developed over a low level abandoned CMP through the dam. Occurred during heavy rain from TS Andrea. No 0 0 None None 0 P RE RI N 13 ft 17.00 0.00 NC05358 TRIB-MILL CREEK 35.2351 -79.3668 NCDENR RHODES LAKE DAM NC S Non-Failure 06/08/2013 Hydrologic/Flooding Overtopping NC01145-1684 Earthen section of dam overtopped adjacent to concrete spillway wall. Sand bags where installed to prevent overtopping. No 0 1 None None 0 S RE R Y 15 ft 2304.00 0.00 NC01145 BLACK RIVER 35.2258 -78.6528 2011 DELTA CONTROL CO L Non-Failure 07/01/2013 Seepage/Internal Erosion Piping CO00565-2087 Non-juridictional, Erosion around outlet gate and piping along outlet conduit L RE S NR 32 ft 54.00 4.00 1961 CO00565 GUNNISON RIVER-TR 38.81 -108.071 DWR SPRING RUN PA L Non-Failure 07/01/2013 Hydrologic/Flooding Overtopping PA00000-3240 COUNTY REPORTED REPEATED OVERTOPPING OF DAM & EROSION DURING RECENT WEATHER EVENT. 0 0 DEP STAFF INSPECTED SITE. NO SIGNIFICANT DETERIORATION COMPARED TO PRIOR INSPECTIONS, 0 P RE R 6 ft 0.00 PA00000 SCRUBGRASS CREEK 41.1154 -79.5148 PADEP 2:00:00 PM PA Dam Safety WRIGHT S DAM FL S Failure 07/05/2013 Hydrologic/Flooding Unknown FL00154-1681 Media reports indicate the dam collapsed from excessive rainfall 0 0 None P RE OP N 25 ft 874.00 0.00 1973 FL00154 PETERS CREEK 30.02 -81.75 Y JACOBS IRRIGATION POND DAM GA L Failure 07/13/2013 Deterioration or Poor Condition Spillway Pipe Failure GA04740-1700 Spillway pipe failure during a heavy rainfall event. No 0 0 Roads, Railroads P RE I NR 31 ft 1390.00 65.00 1977 GA04740 MILL BRANCH 32.6317 -81.7694 GA-SAFE DAMS PROGRAM Y FOWLER PARK LAKE DAM IN L Non-Failure 07/17/2013 Deterioration or Poor Condition Spillway Pipe Failure IN00462-1720 Corrugated metal pipe may have deteriorated to the point where soil is entering the pipe and/or the inlet box connection to the pipe has leaked allowing water to travel along the outside of the conduit removing embankment material No 0 0 None L RE R N 22 ft 253.00 22.00 1958 IN00462 UNNAMED TRIBUTARY HONEY CREEK 39.3386 -87.3739 IDNR DERRY RUN BASIN C PA L Failure 07/22/2013 Hydrologic/Flooding Spillway Pipe Failure PA00000-3242 OUTLET WORKS INCLUDING 4' DIAMETER CMP WERE UNDERMINED AND FAILED 0 0 0 0 BREACHING OF THE DAM WAS COMPLETED ON SEPT 17, 2014 L RECN C 0.00 PA00000 TR LITTLE CONEWAGO CREEK 39.5802 -76.4822 PADEP 1 DAY PA Dam Safety MODEL CO L Failure 08/08/2013 Seepage/Internal Erosion Piping CO00542-2091 Embankment failure due to erosion piping. An 8-ft-square erosion pipe formed in the embankment, draining the reservoir but not fully breaching the dam. RE IP NR 39 ft 29943.00 420.00 1921 CO00542 BLACK HILLS ARROYO-TR 37.3283 -104.389 DWR TWO BUTTES CO H Non-Failure 08/08/2013 Hydrologic/Flooding Insufficient Spillway Capacity CO00759-2094 Due to heavy rainfall reservoir went from dry 55 feet above the outlet between 8-1 & 8-8. There was concern that the spillway could flow and potentially the dam could overtop due to a spillway not meeting the Rules. Yes S RE RF Y 106 ft 40654.00 1182.00 1908 CO00759 TWO BUTTE CREEK 37.6359 -102.538 DWR UPPER HIGHLINE CO H Non-Failure 08/27/2013 Malfunction of Equipment/Gate Gate/Valve Failure CO00831-2095 Hydraulically operated valve became bound and could not be closed. An uncontrolled release of about 200 cfs occurred continuously until some emergency actions were initiated to slow the release. S RE R Y 98 ft 7125.00 155.00 1967 CO00831 MACK WASH-TR 39.27 -108.846 1969 DWR RACKY MOUNTAIN ARSONAL DAMS CO L Failure 09/12/2013 Hydrologic/Flooding Unknown CO00000-2120 Colorado Floods 0.00 CO00000 0 0 SUNSET DAM CO L Failure 09/12/2013 Hydrologic/Flooding Unknown CO00000-2121 Colorado Flooding 0.00 CO00000 0 0 12:00 AM GREAT WESTERN CO H Non-Failure 09/12/2013 Hydrologic/Flooding High Reservoir Level CO00000-2125 spillway flows - Colorado Flooding of 9-13 0.00 CO00000 0 0 RAINBOW DAM CO L Failure 09/12/2013 Hydrologic/Flooding Unknown CO00000-2132 Colorado Flooding of 9-13 0.00 CO00000 0 0 WILLOW DAM CO L Failure 09/12/2013 Hydrologic/Flooding Unknown CO00000-2134 Colorado Flooding of 9-13 0.00 CO00000 0 0 BASELINE - EAST CO H Non-Failure 09/12/2013 Hydrologic/Flooding Unknown CO00214-2062 Unprecedented, uncontrolled inflows
Colorado Flooding of 9-13 P RE IS Y 44 ft 6592.00 270.00 1905 CO00214 DRY CREEK 39.9986 -105.198 DWR LEYDEN CO H Non-Failure 09/12/2013 Hydrologic/Flooding Other CO01216-2075 reports of dam failing; spillway flows - Colorado Flooding of 9-13 L RE CR Y 46 ft 1300.00 19.00 1902 CO01216 LEYDEN CREEK 39.8383 -105.171 2001 DWR MEADOW LAKE CO L Failure 09/12/2013 Hydrologic/Flooding Unknown CO02717-2086 failed 1:40 pm 9/12 - Colorado Flooding of 9-13 RE R NR 30 ft 92.00 6.00 1957 CO02717 W FORK LITTLE THOMPSON 40.2621 -105.419 DWR CHASE GULCH CO H Non-Failure 09/12/2013 Seepage/Internal Erosion Excessive/Increased Seepage CO02786-2072 new seepage reported; Colorado Flooding of 9-13 L ER S Y 100 ft 1250.00 25.00 1996 CO02786 CHASE GULCH 39.8165 -105.53 DWR BASELINE - NORTHWEST CO H Non-Failure 09/12/2013 Structural Stability Slope Stability CO02820-2063 slope instability with uncontrolled inflow and continuing rain. Colorado Flooding of 9-13 P RE IS Y 20 ft 6592.00 270.00 1905 CO02820 SOUTH BOULDER CREEK-OS 40.0028 -105.206 DWR PINE BROOK CO H Non-Failure 09/12/2013 Hydrologic/Flooding Other CO02896-2067 first time spillway flows - Colorado Flooding of 9-13 P RC S Y 84 ft 140.00 4.00 2006 CO02896 TWO MILE CREEK 40.0491 -105.312 DWR CARRIAGE HILLS #1/UPPER CO L Non-Failure 09/13/2013 Hydrologic/Flooding Overtopping CO00000-2127 overtopped, erosion damage but not failure - Colorado Flooding of 9-13 0.00 CO00000 0 0 MIRROR DAM CO L Failure 09/13/2013 Hydrologic/Flooding Unknown CO00000-2131 Colorado Flooding of 9-13 0.00 CO00000 0 0 LATHAM RESERVOIR CO Failure 09/13/2013 Hydrologic/Flooding High Reservoir Level CO00000-2135 Reported in Denver Post as failing - Colorado Flooding of 9-13 0.00 CO00000 0 0 BARNES MEADOW CO H Non-Failure 09/13/2013 Hydrologic/Flooding High Reservoir Level CO00123-2083 Report of failing, only spillway flows - Colorado Flooding of 9-13 L RE IS Y 50 ft 3005.00 108.00 1923 CO00123 JOE WRIGHT CREEK-TR 40.6 -105.836 DWR TUCKER LAKE - SOUTH DAM CO H Non-Failure 09/13/2013 Hydrologic/Flooding High Reservoir Level CO01181-2082 Arvada Police report of reservoir approaching capacity - Colorado Flooding of 9-13 P RE I Y 29 ft 882.00 56.00 1899 CO01181 RALSTON CREEK-OS 39.8254 -105.197 DWR ARAPAHOE LAKE CO S Non-Failure 09/13/2013 Hydrologic/Flooding Overtopping CO02089-2061 reported overtopping; Colorado Flooding of 9-13 P RE R Y 23 ft 45.00 4.00 1974 CO02089 GOLDSMITH GULCH 39.6057 -104.874 DWR SIX MILE - MAIN CO H Non-Failure 09/14/2013 Hydrologic/Flooding Spillway Erosion/Head Cutting CO00250-2068 uncontrolled inflows, spillway erosion - Colorado Flooding of 9-13 P RE IR Y 52 ft 2186.00 124.00 1892 CO00250 LITTLE DRY CREEK-TR 40.0675 -105.218 DWR VIELE LAKE CO L Non-Failure 09/14/2013 Hydrologic/Flooding High Reservoir Level CO00257-2069 spillway flows (report of dam failing) - Colorado Flooding of 9-13 L RE RFC NR 24 ft 240.00 20.00 1967 CO00257 SOUTH BOULDER CREEK-TR 39.9733 -105.249 DWR CURRIE LAKE DAM CO L Non-Failure 09/14/2013 Hydrologic/Flooding Spillway Erosion/Head Cutting CO00000-2129 headcutting in Spillway - Colorado Flooding of 9-13 0.00 CO00000 0 0 BUTTON ROCK CO H Non-Failure 09/14/2013 Hydrologic/Flooding Spillway Erosion/Head Cutting CO00171-2064 Spillway flowing causing damage, report of dam in trouble,failing. Colorado Flooding of 9-13 L RE S Y 214 ft 20400.00 222.00 1969 CO00171 NORTH ST. VRAIN CREEK 40.2171 -105.367 1990 DWR LEFT HAND VALLEY CO H Non-Failure 09/15/2013 Hydrologic/Flooding High Reservoir Level CO00177-2066 Reported as being in trouble; John B reported spillways flows only. Colorado Flooding of 9-13 P RE I Y 68 ft 2814.00 113.00 1952 CO00177 DRY CREEK 40.0997 -105.261 2002 DWR EMERALD VALLEY LOWER CO L Failure 09/16/2013 Hydrologic/Flooding Unknown CO00000-2123 dam reported to have failed on 9/12-9/13 - Colorado Flooding of 9-13 0.00 CO00000 0 0 Y EMERALD VALLEY UPPER CO L Failure 09/16/2013 Hydrologic/Flooding Unknown CO00000-2124 dam reported to have failed on 9/12-9/13 - Colorado Flooding of 9-13 0.00 CO00000 0 0 Y GAYNOR CO S Non-Failure 09/18/2013 Seepage/Internal Erosion Piping CO00284-2065 Reported by owner, piping around outlet works. Colorado Flooding of 9-13 L RE IR Y 10 ft 840.00 70.00 CO00284 BOULDER CREEK-OS 40.1225 -105.11 1960 DWR MANITOU CO H Non-Failure 09/18/2013 Seepage/Internal Erosion Excessive/Increased Seepage CO00426-2071 new seepage reported - Colorado Flooding of 9-13 L RE S Y 124 ft 1100.00 27.00 1971 CO00426 NORTH FORK FRENCH CREEK 38.8767 -104.994 1998 DWR FLATIRONS VISTA CO S Non-Failure 09/19/2013 Hydrologic/Flooding Overtopping Slope Stability Sinkhole CO00000-2081 overtopped, DS slide, sinkhole, partial breach. Colorado Flooding of 9-13 0.00 CO00000 0 0 CARRIAGE HILLS #2/LOWER CO L Failure 09/19/2013 Hydrologic/Flooding Overtopping CO00000-2128 Colorado Flooding of 9-13 0.00 CO00000 0 0 Yes Y FISH HATCHERY DAM CO L Non-Failure 09/19/2013 Hydrologic/Flooding Spillway Erosion/Head Cutting CO00000-2130 severe erosion of spillway, reported by owner - Colorado Flooding of 9-13 0.00 CO00000 0 0 CEDAR SPRINGS CO L Non-Failure 09/19/2013 Hydrologic/Flooding Overtopping CO01767-2084 overtopped, spillway and DS slope damage, Owner reported - Colorado Flooding of 9-13 P RE FRP NR 37 ft 50.00 3.00 1969 CO01767 CEDAR CREEK 40.4614 -105.32 DWR CROW LANE NO. 1 CO H Non-Failure 09/19/2013 Hydrologic/Flooding Other CO02932-2085 Owner reported - heavy spillway flows - Colorado Flooding of 9-13 U RE S Y 74 ft 52.00 4.00 2008 CO02932 UNAMED TRIB LT THOMPSON 40.2767 -105.358 DWR ASPEN LODGE RESORT AND SPA CO S Non-Failure 09/20/2013 Hydrologic/Flooding Overtopping CO00000-2126 overtopped, debris flow plugged spillway, outlet inoperable, emergency breach - Colorado Flooding of 9-13 0.00 CO00000 0 0 IDAHO SPRINGS STORAGE CO L Non-Failure 09/22/2013 Hydrologic/Flooding Erosion CO00000-2122 erosion at toe - Colorado Flooding of 9-13 0.00 CO00000 0 0 UPPER GATES RESERVOIR DAM CO L Non-Failure 09/23/2013 Hydrologic/Flooding Spillway Erosion/Head Cutting CO00000-2133 reported by owner, severe headcutting in spillway - Colorado Flooding of 9-13 0.00 CO00000 0 0 BLANCHARD POND DAM MI L Non-Failure 10/07/2013 Deterioration or Poor Condition Gate/Valve Failure MI00118-1760 Broken board on the outlet structure and impoundment drawn down. No 0 0 None P RE R NR 12 ft 300.00 13.00 1978 MI00118 NORTH BRANCH PINE RIVER 43.525 -85.075 Michigan DEQ LAKE SERENE NORTH DAM MS H Non-Failure 10/16/2013 Deterioration or Poor Condition Spillway Chute Failure MS00698-1880 PIPING UNDER THE SPILLLWAY SLAB. FURTHER INVESTIGATION IS TAKING PLACE. No 0 0 None none P RE R Y 28 ft 1803.00 135.00 1968 MS00698 PERKINS CREEK 31.3167 -89.4322 1992 MS Dept. of Environmental Quality Y GORHAM NH L Non-Failure 10/17/2013 Deterioration or Poor Condition Spillway Chute Failure NH00191-1820 Appears structural members supporting upstream facing (timber crib design) in lower left section of spillway had given way resulting in a "V" shaped depression/void in the timber facing. Flow from this void exited through the downstream apron drains. 0 0 None NONE P TCERRE H NR 24 ft 370.00 45.00 1904 NH00191 ANDROSCOGGIN RIVER 44.4082 -71.1952 NH DEPARTMENT OF ENVIRONMENTAL SERVICES DAM BUREAU Y SGL #69 DAM 13 PA L Non-Failure 01/01/2014 Other Animal Activity Debris Clogging PA00000-3226 DAMS BUILT FOR WATERFOWL DAMAGED BY BEAVERS BLOCKING SPILLWAYS & ASSOCIATED HIGH WATER. 0 0 0 0 Dams Downstream DAMS REMOVED AND NATURAL WATERWAYS RESTORED. S RE F 0.00 PA00000 WEST BRANCH SUGAR CREEK 41.3808 -79.5348 PADEP PA Dam Safety LAKE HAVEN DAM OH L Non-Failure 02/01/2014 Deterioration or Poor Condition Spillway Riser Failure OH00115-2656 Principal spillway riser failed. Currently at lowered pool. No 0 0 0 0 P RE R N 22 ft 113.00 13.00 1960 OH00115 TRIBUTARY TO LAKE ERIE 41.42 -82.29 DEPARTMENT OF NATURAL RESOURCES OH DNR DAN RIVER ACTIVE PRIMARY ASH BASIN NC H Failure 02/02/2014 Deterioration or Poor Condition Spillway Pipe Failure NC05945-1980 Failure of a 48-inch corrugated metal storm-water pipe that ran beneath the ash basin released ash slurry into the adjacent river. 83 U RE O Y 40 ft 0.00 NC05945 DAN RIVER 36.4883 -79.7148 NCDENR Y WANAPUM WA H Non-Failure 02/28/2014 Unknown Under Investigation WA00085-2000 An engineer noticed a slight irregular bowing above the spillway gates Divers found a 2-inch-wide crack that stretched for 65 feet along the base of one of the dam's spillway piers. Yes 0 U PGERCN HCR Y 206 ft 796000.00 14590.00 1965 WA00085 COLUMBIA RIVER 46.8731 -119.97 Federal Energy Regulatory Com POND LICK LAKE DAM OH H Non-Failure 04/01/2014 Hydrologic/Flooding High Reservoir Level OH02385-2657 Dam came within a foot of overtopping during construction of repairs. No 0 0 0 0 S RE R Y 22 ft 96.00 4.00 1938 OH02385 POND LICK RUN 38.69 -83.17 DEPARTMENT OF NATURAL RESOURCES OH DNR LITTLE DEER CREEK SITE 2A (MCKNIGHT/RUTLEDGE) MD S Non-Failure 04/01/2014 Deterioration or Poor Condition Spillway Riser Failure Excessive/Increased Seepage MD00035-2662 Plugged Riser,Abutment Seepage Yes 0 0 P RE C Y 44 ft 523.00 5.00 1962 MD00035 TR-LITTLE DEER CREEK 39.6404 -76.5275 1962 MD Dam Safety one week MD Dam Safety INLAND STEEL T MN S Failure 04/07/2014 Hydrologic/Flooding Overtopping MN00670-2648 Tailings basin decant water could not flow back to reclaim pond due to ice blockage in decant diversion ditch. Overtopped and failed. No 0 0 0 0 None 114,565 cubic feet of material; amount of water unknown P RE ST NR 55 ft 14500.00 1800.00 1976 MN00670 WUORI CREEK-CLOSED SYSTEM 47.6025 -92.4607 MNDNR WATERS <95 hours Yes Owner; MN DNR Dam Safety files. WILLOW SPRINGS LAKE DAM GA L Failure 04/07/2014 Unknown Under Investigation GA02463-2020 GA Safe Dams Program investigated after reports of breaching. There was some evidence of overtopping in the past. Also trees and brush and a dilapidated spillway riser structure. No 0 1 Roads P RE R NR 39 ft 309.00 12.00 1954 GA02463 UNKNOWN 33.93 -84.9222 GA-SAFE DAMS PROGRAM Y CARO DAM MI L Non-Failure 04/14/2014 Malfunction of Equipment/Gate Gate/Valve Failure MI00381-2060 structural failure of tainter gate due to deterioration No 0 0 P PG NR 19 ft 900.00 200.00 1928 MI00381 CASS RIVER 43.4617 -83.4167 Michigan DEQ WRACO LODGE DAM MI L Failure 04/14/2014 Hydrologic/Flooding Overtopping MI01812-2021 peak discharge apparently exceeded spillway capacity, causing overtopping No 0 0 RE R NR 9 ft 1100.00 452.00 1928 MI01812 WOLF CREEK 44.221 -84.7741 Michigan DEQ PVCC DAM VA L Non-Failure 04/27/2014 Malfunction of Equipment/Gate Gate/Valve Failure VA00380-2457 Gate/valve failure resulted in draining of lake S RE R Y 39 ft 109.00 2.00 1960 VA00380 TRIB. MOORES CREEK 38.0067 -78.4883 DCR CRESCENT LAKE DAM FL L Failure 04/29/2014 Hydrologic/Flooding Overtopping FL00058-2650 20” or more of rain causing the Dam to overtop. An area approximately 200’ long on the west end of the Dam was totally
breached causing most of the water to drain from the lake. P RE RS N 16 ft 396.00 0.00 1960 FL00058 BAYOU MARCUS 30.46 -87.27 FL DEP Y ROCKY GORGE DAM MD H Non-Failure 04/30/2014 Hydrologic/Flooding High Reservoir Level MD00020-2660 Large rain event during construction with exposed vulnerabilit Yes 0 400 L CBCN SR Y 134 ft 22000.00 773.00 1953 MD00020 PATUXENT RIVER 39.1167 -76.8751 2014 MD Dam Safety MD Dam Safety LAKE BRUNSWICK DAM OH H Non-Failure 05/01/2014 Hydrologic/Flooding Overtopping OH00623-2654 Overtopping event for an RCC covered dam. No 0 0 0 0 L RE R Y 16 ft 133.00 13.00 1930 OH00623 PLUM CREEK 41.23 -81.81 DEPARTMENT OF NATURAL RESOURCES OH DNR CAROL-JANE LAKE DAM OH S Non-Failure 05/01/2014 Hydrologic/Flooding Overtopping Spillway Erosion/Head Cutting OH01062-2655 Two minor overtopping events for the dam. Severe erosion in the emergency spillway. No 0 0 0 0 P RE R N 25 ft 41.00 4.00 1940 OH01062 TRIBUTARY TO WEST BRANCH ROCKY RIVER 41.19 -81.83 DEPARTMENT OF NATURAL RESOURCES OH DNR CHADSWOOD SWM POND, CROSS LAUREL DRIVE MD S Non-Failure 05/01/2014 Deterioration or Poor Condition Spillway Pipe Failure Sinkhole MD00497-3086 CMP culverts failed (deterioration at invert) resulting in sinkholes and slumps on upstream slope. No P RE C Y 20 ft 0.00 0.00 1981 MD00497 GREAT SENECA CREEK-TR 39.1896 -77.2293 2015 MD DAM SAFETY MDE Dam Safety Program INDIAN HILL LAKE DAM TX L Non-Failure 05/12/2014 Unknown Spillway Deficiency TX02977-2712 SPILLWAY FAILED, DID NOT BREACH P RE R NR 28 ft 386.00 20.00 1960 TX02977 BLACK CREEK 30.8833 -95.6106 TCEQ TX DEQ CORTI-JENCEN DAM VA H Failure 05/14/2014 Seepage/Internal Erosion Piping VA00000-2458 piping failure resulted in partial breach 1989 ft 0.00 VA00000 0 0 VA DEQ GORSON DAM PA H Non-Failure 06/02/2014 Seepage/Internal Erosion Piping PA01084-3195 A SIGNIFICANT SEEP WAS DISCOVERED ALONG THE CONDUIT PIPE. No 0 0 0 0 EMERGENCY DRAWDOWN OF THE IMPOUNDMENT RECOMMENDED BY DEP DAM SAFETY. P RE R 11 ft 0.00 1929 PA01084 MILL CREEK 41.1051 -74.5605 PADEP Yes PA Dam Safety Y CARROLL TN S Non-Failure 06/05/2014 Malfunction of Equipment/Gate Gate/Valve Failure TN01703-2136 One of the two radial gates in the spillway gave way partially. The lake drained out under the bent gate. No 0 0 None None 1100 S RE NR 20 ft 1848.00 110.00 1949 TN01703 CLEAR CREEK 36.1003 -88.4847 TENN SAFE DAMS PRG Y HALLENBECK #1 CO H Non-Failure 06/10/2014 Seepage/Internal Erosion Cracking Other CO00085-3025 Dam exhibits unusual cracking and behavior of toe drains and piezometers. Yes L RE SR Y 43 ft 1155.00 62.00 1970 CO00085 KAHNAH CREEK-TR 38.9693 -108.294 DWR CO DWR LOWER MEADOWDALE DAM VA S Failure 06/11/2014 Seepage/Internal Erosion Piping VA04173-2447 piping failure resulting in partial breach N 11 ft 49.60 0.00 VA04173 TRIB. FALLING CREEK 37.4373 -77.4567 DCR LITTLE TONOLOWAY DAM MD L Non-Failure 06/12/2014 Hydrologic/Flooding High Reservoir Level MD00062-2659 8 inches rain in 4 hour Yes 0 0 P RE R NR 17 ft 66.00 7.00 1953 MD00062 LITTLE TONOLOWAY CREEK 39.6844 -78.2553 1953 MD Dam Safety MD Dam Safety SOUTH MOUND CREEK POOL MN L Failure 06/14/2014 Hydrologic/Flooding Overtopping MN00111-2647 Flood overtopped dam and right embankment (emergency spillway) failed. Wooden dock floated loose and partially blocked principal spillway. No 0 0 0 1 Bridges DNR owed Dam. Operators notified DNR Dam Safety quickly. 200 acre-feet S PG R NR 24 ft 235.00 19.00 1940 MN00111 MOUND CREEK 43.7145 -96.1779 1940 MNDNR WATERS Between 9 pm and midnight <12 hours Yes State park staff; MN DNR Dam Safety files. BUFFALO LAKE ROAD DAM 2 SD S Failure 06/23/2014 Deterioration or Poor Condition Spillway Pipe Failure Piping Sinkhole SD00407-2140 Based on news reports and SD Dam Safety info it appears that CMP spillways deteriorated and failed causing internal erosion and sink holes. High water in the lake exacerbated the erosion. Roads S RE R Y 82 ft 2850.00 0.00 1961 SD00407 TR CHEYENNE 44.6217 -102.003 1991 DENR Y BUFFALO LAKE ROAD DAM 1 SD S Failure 06/23/2014 Deterioration or Poor Condition Spillway Pipe Failure SD00518-2141 Based on news reports and SD Dam Safety info it appears that CMP spillways deteriorated and failed causing internal erosion and sink holes. High water in the lake exacerbated the erosion. Roads S RE R Y 95 ft 2650.00 0.00 1961 SD00518 TR CHEYENNE 44.635 -101.897 1991 DENR Y HIGH ISLAND CREEK MN L Failure 06/29/2014 Hydrologic/Flooding Overtopping MN00819-2649 Large rainfall washed out right earthen embankment. Earthen abutment lower than design. No 0 0 0 0 None None S PG CO NR 9 ft 50.00 0.00 1958 MN00819 HIGH ISLAND CREEK 44.5756 -93.9924 MNDNR WATERS <12 hours No Citizen; DNR Fisheries staff; MN DNR Dam Safety files. FINDLAY UPGROUND RESERVOIR NO. 2 OH H Non-Failure 07/01/2014 Deterioration or Poor Condition Spillway Pipe Failure OH00782-2653 Wet area noted at the downstream toe. Leak in the resevoir fill line. No 0 0 0 0 L RE S Y 32 ft 19478.00 624.00 1971 OH00782 BLANCHARD RIVER - OFFSTREAM 41.01 -83.57 DEPARTMENT OF NATURAL RESOURCES OH DNR IVANHOE CO L Non-Failure 07/01/2014 Seepage/Internal Erosion Settlement Sinkhole CO00682-3026 Excessive settlement and cracking on the upstream face over the outlet piping Yes U RE IS Y 17 ft 1007.00 82.00 1928 CO00682 IVANHOE CREEK 39.2717 -106.509 1971 DWR CO DWR RIEVES DAM VA L Non-Failure 07/03/2014 Deterioration or Poor Condition Spillway Riser Failure VA04123-2445 Plugged riser failed resulting in partial breach P RE R NR 16 ft 50.00 0.00 1956 VA04123 ASHT0N CREEK 37.3412 -77.4463 DCR KING NO. 1 WY L Failure 07/15/2014 Seepage/Internal Erosion Piping WY00328-2646 No 0 0 0 0 Other $100,000 to $500,000 2216 AF P RE I NR 24 ft 2449.00 230.00 1922 WY00328 SEEPAGE CREEK 41.5933 -106.063 SEO 12 a.m. to 4 a.m. Estimated Less than 4 hours Yes WY State Engineer's Office Y TWAIN HARTE CA S Non-Failure 08/03/2014 Unknown Under Investigation CA00649-2160 The dam was built on solid granite. Very hard solid rock. On 8/3 the massive right abutment rock, exfoliated. This created a new seepage path which resulted in 50 gpm additional seepage. Previous to this there was only wet spots and no active seepage. 0 P MV RS NR 36 ft 143.00 12.00 1928 CA00649 TR SULLIVAN CR 38.0291 -120.244 Division of Safety of Dams Y NEW JERSEY NO NAME # 32 DAM NJ S Non-Failure 08/05/2014 Hydrologic/Flooding Erosion NJ00520-2863 erosion of subgrade under articulated concrete block at auxiliary spillway 0 0 P PGRE R Y 40 ft 166.00 15.00 1967 NJ00520 SOUTH BRANCH RARITAN RIVER 40.5893 -74.9022 NJDEP NJ DEP BEAUFONT SPRING DAM VA S Non-Failure 08/06/2014 Hydrologic/Flooding Overtopping VA04177-2443 Overtopping resulted in erosion of downstream face P N 33 ft 139.00 0.00 VA04177 TRIB. POWHITE CREEK 37.5078 -77.5312 DCR WHEATON BRANCH STORM WATER MANAGEMENT MD H Non-Failure 08/12/2014 Hydrologic/Flooding High Reservoir Level MD00127-2658 Large rain even Yes 0 0 L RE C Y 27 ft 196.00 3.00 1979 MD00127 TR-SLIGO CREEK 39.0247 -77.0383 1990 MD Dam Safety one day MD Dam Safety RABEL DAM WA S Non-Failure 08/21/2014 Hydrologic/Flooding Overtopping WA00308-2263 Fire-swept Benson Creek watershed received from 0.4 to 0.9 inches of rain in a one-hour period. Debris blocked the spillway and caused the reservoir to fill and overtop the dam. 0 0 0 0 None P RE R N 24 ft 150.00 11.00 1940 WA00308 TR-BENSON CREEK 48.3228 -119.998 1992 Washington, Dept of Ecology Yes Y HAWKINS DAM WA S Failure 08/21/2014 Hydrologic/Flooding Spillway Erosion/Head Cutting WA00320-2267 Fire-swept Benson Creek watershed received from 0.4 to 0.9 inches of rain in one hour. Debris obstructed the spillway-the dam didn't overtop. Erosion in the spillway channel down-cut into the lake and draining it. 0 0 0 0 None P RE IR N 33 ft 60.00 3.00 1940 WA00320 TR-BENSON CREEK 48.3139 -120.002 1992 Washington, Dept of Ecology Yes Y CHALFA DAM WA S Non-Failure 08/21/2014 Hydrologic/Flooding Other WA00328-2265 Fire-swept Benson Creek watershed received from 0.4 to 0.9 inches of rain in a one-hour period. Debris partially blocked the spillway 0 0 0 0 None P RE IR N 17 ft 80.00 9.00 1940 WA00328 TR-BENSON CREEK 48.332 -119.998 1992 Washington, Dept of Ecology Yes Y LAKE WHITE DAM OH H Non-Failure 08/29/2014 Unknown Under Investigation OH00446-2180 Seepage adjacent to the spillway was noted by Park staff on 8/29/14. The lake was drawndown and ODNR engineers and consultant are investigating the cause. Yes 0 0 Roads S RE R Y 39 ft 7633.00 400.00 1935 OH00446 PEE PEE CREEK 39.1 -83 DEPARTMENT OF NATURAL RESOURCES SHREVE LAKE DAM OH H Non-Failure 09/01/2014 Deterioration or Poor Condition Spillway Pipe Failure Sinkhole OH00436-2652 Sink hole discovered on downstream slope directly over the principal spillway pipe. Bad joint. Lake drained until repairs can be made. No 0 0 0 0 S RE R Y 25 ft 855.00 59.00 1962 OH00436 TRIBUTARY TO SHREVE CREEK 40.68 -82.04 DEPARTMENT OF NATURAL RESOURCES OH DNR O'NEAL LAKE DAM MI L Failure 09/07/2014 Seepage/Internal Erosion Piping MI00033-2200 Failure of left embankment by either piping or overtopping 0 0 None none S PGRE R NR 10 ft 1250.00 138.00 1954 MI00033 BIG SUCKER CREEK 45.7117 -84.9067 Michigan DEQ Y DESCHUTES DAM WA L Non-Failure 10/04/2014 Malfunction of Equipment/Gate Gate/Valve Failure WA00143-2261 The east gate of the dam unexpectedly failed to close during the early morning hours of 10-04-14 dewatering most of the south and middle basins of the lake before staff could respond. 0 0 0 0 S RE R NR 45 ft 4300.00 270.00 1951 WA00143 DESCHUTES RIVER 47.0435 -122.909 Washington, Dept of Ecology Y LAKE ANN CO H Non-Failure 10/10/2014 Seepage/Internal Erosion Sinkhole CO00683-3028 Sinkhole in dam foundation upstream of embankment P RE IR Y 42 ft 562.00 20.00 1912 CO00683 WEST SOPRIS CREEK-OS 39.3033 -107.117 1953 DWR CO DWR DURANGO TERMINAL CO H Non-Failure 12/02/2014 Seepage/Internal Erosion Piping CO01060-3027 piping into unfiltered toe drains on downstream toe of dam L RE S Y 45 ft 341.00 19.00 1954 CO01060 GOEGLEIN GULCH-OS 37.2907 -107.847 DWR CO DWR GEORGE H SPARKS RESERVOIR DAM #1 GA L Non-Failure 01/01/2015 Hydrologic/Flooding Spillway Chute Failure GA01148-3326 Significant damage to concrete spillway as result of heavy rain event L ER R NR 40 ft 4685.00 222.00 1962 GA01148 UNKNOWN 33.7583 -84.6292 GA-SAFE DAMS PROGRAM GA-SAFE DAMS PROGRAM ALBRITTON LAKE DAM MS S Non-Failure 01/21/2015 Deterioration or Poor Condition Spillway Pipe Failure MS03326-2601 FAILURE OF THE PRIMARY SPILLWAY (CMP) THAT WAS PREVIOUSLY FILLED WITH CONCRETE No 0 1 0 0 P RE R NR 33 ft 1369.00 80.00 1995 MS03326 TR. MILL CREEK 30.9806 -89.6881 MS Dept. of Environmental Quality LAKE TIAK O KHATA MS H Non-Failure 01/21/2015 Seepage/Internal Erosion Piping MS00189-2941 0 0 0 None 0 P RE R Y 33 ft 650.00 0.00 1954 MS00189 TRIB OF HUGHES CREEK 33.0956 -89.0728 2010 MS Dept. of Environmental Quality MS DEQ GLEN LAKE DAM NJ H Failure 01/28/2015 Seepage/Internal Erosion Piping NJ00307-2862 piping failure through embankment adjacent to concrete spillway No 0 0 39 P PGRE R Y 12 ft 66.00 14.00 1922 NJ00307 WALLKILL RIVER 41.0392 -74.6074 NJDEP NJ DEP BRAWNER LAKE MN L Failure 02/24/2015 Deterioration or Poor Condition Spillway Pipe Failure MN00120-3105 In 2015, a small seperation between the riser and outlet conduit occurred, resulting in a slowly falling lake level. In 2017, the corroded conduit seperated from the riser draining the lake. No 0 0 0 0 None Unknown DNR owned Dam. Operators notified DNR Dam Safety quickly. 400 S PGRE O NR 32 ft 450.00 30.00 1952 MN00120 REDWOOD RIVER 44.3358 -95.9214 1997 MNDNR EWR 2 years to complete failure No MNDNR SENATOBIA LAKES INCORPORATED POND DAM MS L Non-Failure 03/12/2015 Deterioration or Poor Condition Spillway Pipe Failure MS01131-2607 FAILURE OF THE PRIMARY SPILLWAY (CMP) THAT WAS PREVIOUSLY FILLED WITH CONCRETE No 0 1 0 0 P RE R NR 14 ft 75.00 0.00 1970 MS01131 TR- HICKAHALA CREEK 34.625 -89.875 MS Dept. of Environmental Quality OKTIBBEHA COUNTY LAKE DAM MS H Non-Failure 03/12/2015 Deterioration or Poor Condition Unknown MS00338-2942 PREVIOUSLY LOW HAZARD RECLASSIFIED TO HIGH HAZARD 0 1 0 NONE 20 L RE C Y 43 ft 10430.00 479.00 1965 MS00338 BIBA WITA CREEK 33.505 -88.9317 2003 MS Dept. of Environmental Quality MS DEQ TOLNA DAM NO. 1 ND S Non-Failure 03/13/2015 Deterioration or Poor Condition Spillway Chute Failure ND00027-2609 Caused by water flowing under the spillway and causing erosion under the spillway 0 0 0 0 L RE R Y 36 ft 3080.00 166.00 1936 ND00027 TOLNA COULEE 47.8045 -98.3943 1941 NDSWC KEYSTONE WOODS LAKE DAM IN H Non-Failure 03/31/2015 Seepage/Internal Erosion Spillway Pipe Failure Sinkhole IN00485-2564 Actively growing sinkhole (about 3 by 5 feet in area, and about 5 feet deep) in the dam. A field visit confirmed the sinkhole had formed over the noticeably deteriorated 36¿ corrugated metal principal spillway pipe. No P RE R N 22 ft 179.00 7.00 1973 IN00485 UNNAMED TRIBUTARY BLUE WOODS CREEK 39.9464 -86.1056 IDNR WEAVER LAKE DAM OH L Failure 04/01/2015 Hydrologic/Flooding Unknown OH03192-3057 Dam Failure No 0 0 0 0 Roads $1 to $100,000 40 P RE O N 13 ft 191.30 4.00 2013 OH03192 STILL FORK, FRIDAY CREEK 40.6358 -81.0247 DEPARTMENT OF NATURAL RESOURCES 1 day Yes OH DNR STONY LAKE DAM OH S Non-Failure 04/01/2015 Hydrologic/Flooding High Reservoir Level OH00458-3058 Near overtopping, damage to conrete in emergency spillway. No 0 0 0 0 P RE O Y 18 ft 183.00 19.00 1928 OH00458 MCGUIRE CREEK 40.4656 -81.1153 DEPARTMENT OF NATURAL RESOURCES 1day Yes OH DNR EAST LIBERTY LAKE DAM OH L Non-Failure 04/01/2015 Seepage/Internal Erosion Piping OH00590-3059 Sinkhole on the downstream slope due to failure of the spillway. Dam eventually breached. No 0 0 0 0 P RE O N 29 ft 114.00 10.00 1930 OH00590 TRIBUTARY TO MILL CREEK 40.3664 -83.6033 DEPARTMENT OF NATURAL RESOURCES 2 weeks Yes OH DNR MUSKINGUM RIVER LOCK AND DAM NO. 7 OH S Non-Failure 04/01/2015 Deterioration or Poor Condition Erosion OH00697-3060 Severe erosion in the right abutment. Right abutment and downstream of dam were reinforced with drumped rock. Part of which were later grouted. No 0 0 0 0 S OT O Y 15 ft 2999.00 442.00 1841 OH00697 MUSKINGUM RIVER 39.6439 -81.8503 DEPARTMENT OF NATURAL RESOURCES 1 week No OH DNR WINANS PA L Non-Failure 04/01/2015 Deterioration or Poor Condition Spillway Pipe Failure Sinkhole PA00000-3225 CMP PRINCIPAL SPILLWAY PIPES SEPARATED RESULTING IN LARGE ERODED HOLE ON THE DOWNSTREAM SLOPE. 0 0 PRIMARY SPILLWAY PLUGGED, FLOW DIVERTED TO AUXILIARY PIPES, & REPAIR PLAN PREPARED. P RE R 10 ft 0.00 PA00000 SPRING RUN 41.4112 -79.4619 PADEP PA Dam Safety SILVER-CRYSTAL DAM KY S Failure 04/07/2015 Structural Stability Foundation Deficiency KY00019-2562 The breach appears to have been caused by a foundation failure. No 0 0 0 0 P RE R NR 15 ft 91.40 10.00 1950 KY00019 WILSON CREEK 38.105 -85.7333 DOW No ROLLING VISTA DAM IN H Non-Failure 04/27/2015 Unknown Under Investigation IN00000-2621 The 20 year old corrugated metal principal spillway pipe is failing
A substantial sinkhole has opened above the pipe indicating that embankment material has been eroded out
There are stress cracks on the top and slope of the embankment
Further the emba RE 1991 ft 0.00 IN00000 0 0 BANNER LAKE #5 CO L Failure 04/29/2015 Seepage/Internal Erosion Piping Vegetation CO01730-3016 Piping failure without full dam breach. Likely root induced. S RE FR NR 13 ft 112.00 16.00 1960 CO01730 JIM CREEK 40.0784 -104.564 2002 DWR CO DWR TWO BUTTES CO H Non-Failure 04/30/2015 Seepage/Internal Erosion Piping CO00759-3017 Sand boils developed during construction near downstream toe of dam. S RE RF Y 106 ft 40654.00 1182.00 1908 CO00759 TWO BUTTE CREEK 37.6359 -102.538 DWR CO DWR LONE TREE DAM NE L Failure 05/01/2015 Hydrologic/Flooding Overtopping NE00815-2843 No 0 0 0 0 Roads Unknown 504 P RE I NR 19 ft 504.00 46.00 1954 NE00815 LONE TREE CREEK 42.9161 -103.316 NE DNR No NE DNR LOWER BEAVER BROOK CO H Non-Failure 05/05/2015 Hydrologic/Flooding High Reservoir Level CO00187-3018 High hazard with very little freeboard, but within 7 inches of spill Yes L ER S Y 46 ft 34.00 2.00 1903 CO00187 BEAVER BROOK 39.706 -105.411 1936 DWR CD DWR DAM NE06722 NE L Failure 05/07/2015 Hydrologic/Flooding Overtopping NE06722-3033 Dam was overtopped and failed following 10-inch plus rain in less than 12 hours. Dam was an unapproved structure. It appears the dam was constructed without any engineering analysis. No 0 0 0 0 Bridges 175 RE P NR 25 ft 411.00 21.00 NE06722 40.177 -97.5594 NE DNR No NeDNR ATHENS FISH AND GAME CLUB LAKE DAM TX L Non-Failure 05/11/2015 Hydrologic/Flooding Overtopping TX00220-2710 OVERTOPPING, DID NOT BREACH P RE R NR 28 ft 1419.00 100.00 1920 TX00220 FLAT CREEK 32.2346 -95.7774 TCEQ TX DEQ LAKE HALBERT DAM TX S Non-Failure 05/11/2015 Hydrologic/Flooding Spillway Deficiency TX02568-2711 SPILLWAY DAMAGE L RE S Y 49 ft 14400.00 649.00 1921 TX02568 ELM CREEK 32.0764 -96.4058 1994 TCEQ TX DEQ TELLER CO L Non-Failure 05/12/2015 Hydrologic/Flooding High Reservoir Level CO00902-3019 Restricted dam with reservoir nearing spillway level. Started Spilling 5/20. Yes F RE R Y 85 ft 1782.00 183.00 1908 CO00902 TURKEY CREEK 38.4367 -104.812 1988 DWR CO DWR STRONTIA SPRINGS CO H Non-Failure 05/22/2015 Unknown High Reservoir Level CO02219-3020 unusual (seldom seen) spillway and outlet works discharges and threat to public Yes U CNVA SHR Y 299 ft 10600.00 98.00 1982 CO02219 SOUTH PLATTE RIVER 39.4327 -105.126 DWR CO DWR MARY A. BOHNKE WY L Failure 05/23/2015 Hydrologic/Flooding Spillway Pipe Failure Overtopping Piping WY00170-2859 Heavy precipitation and an eroded CMP outlet caused piping overtopping No 0 0 0 0 None 106 P RE I NR 40 ft 106.00 9.00 1954 WY00170 PARADISE CREEK 42.0217 -105.24 SEO Wyoming SEO BASTROP STATE PARK DAM TX L Failure 05/23/2015 Hydrologic/Flooding Overtopping TX02717-2612 Severe storms caused the dam to overtop and fail 0 0 0 0 S RE R NR 18 ft 110.00 0.00 1913 TX02717 TR-COPPERAS CREEK 30.1124 -97.277 1935 TCEQ Yes GEER Report Y LEWIS CREEK DAM TX H Non-Failure 05/25/2015 Hydrologic/Flooding Sliding TX00119-2708 MULTIPLE SLIDES P RE SRO Y 57 ft 22000.00 1010.00 1969 TX00119 LEWIS CREEK 30.4345 -95.5431 2012 TCEQ TX DEQ LAKE COLUMBIA DAM MS L Non-Failure 05/25/2015 Seepage/Internal Erosion Piping MS00541-2943 0 0 0 Roads Unknown S RE R NR 20 ft 990.00 96.00 MS00541 31.1833 -89.7383 MS Dept. of Environmental Quality 1:00 PM MS DEQ UPPER BRUSHY CREEK WS SCS SITE 22 DAM TX H Non-Failure 05/26/2015 Hydrologic/Flooding Sliding TX01323-2707 SLIDES L RE CP Y 21 ft 615.60 11.00 1959 TX01323 TR-BRUSHY CREEK 30.4906 -97.5402 TCEQ TX DEQ LOWER BRUSHY CREEK WS SCS SITE 2 DAM TX L Non-Failure 05/26/2015 Structural Stability Sliding TX01335-2884 SLIDES L RE CP NR 34 ft 710.00 19.00 1960 TX01335 TR-TURKEY CREEK 30.6204 -97.3388 TCEQ LOWER BRUSHY CREEK WS SCS SITE 7 DAM TX L Non-Failure 05/26/2015 Structural Stability Sliding TX01346-2885 SLIDES L RE CIP NR 34 ft 547.00 15.00 1960 TX01346 TR-TURKEY CREEK 30.6452 -97.2906 TCEQ MOUNTAIN CREEK WS SCS SITE 10 DAM TX H Non-Failure 05/27/2015 Hydrologic/Flooding Overtopping TX01309-2706 OVERTOPPING, DID NOT BREACH, CONSTRUCTION COFFERDAM L RE CR N 43 ft 6457.00 90.00 1956 TX01309 NEWTON BRANCH 32.498 -97.0421 TCEQ TX DEQ SKEEL CO H Non-Failure 05/27/2015 Seepage/Internal Erosion Excessive/Increased Seepage CO01304-3021 Uncontrolled inflow into reservoir - dam is restricted due to excessive seepage at high reservoir levels L RE RI Y 40 ft 220.00 15.00 1900 CO01304 SOUTH PLATTE RIVER-OS 39.6567 -104.944 1901 DWR CO DWR MULLET CREEK WI L Non-Failure 05/28/2015 Seepage/Internal Erosion Sinkhole WI00933-2854 seepage noted, sinkhole formed S RE F N 9 ft 1250.00 300.00 1971 WI00933 MULLET 43.7582 -88.176 WIDNR WI DNR JOSHUA SPRINGS PARK DAM NO 3 TX S Non-Failure 05/29/2015 Hydrologic/Flooding Overtopping TX07311-2704 OVERTOPPING, DID NOT BREACH, EROSION DAMAGE L RE Y 36 ft 39.00 1.00 1800 TX07311 LITTLE JOSHUA CREEK 29.8839 -98.8085 TCEQ TX DEQ JOSHUA SPRINGS PARK DAM NO 2 TX S Non-Failure 05/29/2015 Hydrologic/Flooding Overtopping TX09592-2705 OVERTOPPING, DID NOT BREACH, EROSION DAMAGE L RE Y 20 ft 49.00 7.00 1800 TX09592 LITTLE JOSHUA CREEK 29.884 -98.8188 TCEQ TX DEQ CROSBY POND DAM MA S Failure 05/29/2015 Unknown Unknown MA01535-3009 The uncontrolled release of the impoundment inundated a heavily traveled road. Nobody was injured, the busy road was closed all day creating significant traffic delay issues. Roads P R NR 9 ft 30.00 0.00 1900 MA01535 MILL BROOK 42.4503 -71.3239 Office of Dam Safety R AND G LAKE DAM TX H Non-Failure 05/30/2015 Hydrologic/Flooding Overtopping TX02058-2684 OVERTOPPING, DID NOT BREACH P RE IR N 30 ft 272.00 29.00 1912 TX02058 TR-SHAWNEE CREEK 33.7916 -96.6105 TCEQ TX DEQ LOY LAKE DAM TX S Non-Failure 05/30/2015 Hydrologic/Flooding Spillway Deficiency TX02053-2685 SPILLWAY EROSION L RE R Y 25 ft 642.00 42.00 1933 TX02053 LOY CREEK 33.7296 -96.588 TCEQ TX DEQ YORK CREEK WS SCS SITE 6 DAM TX S Non-Failure 05/30/2015 Hydrologic/Flooding Sliding TX01605-2686 SLIDE LP RE CRPD Y 31 ft 877.00 26.00 1962 TX01605 TR-YORK CREEK 29.7394 -97.9746 TCEQ TX DEQ MOUNTAIN CREEK DAM TX H Non-Failure 05/30/2015 Hydrologic/Flooding Sliding TX00827-2687 SLIDES P RE O Y 47 ft 64372.00 2880.00 1936 TX00827 MOUNTAIN CREEK 32.7326 -96.9437 1999 TCEQ TX DEQ LAKE LEON DAM TX H Non-Failure 05/30/2015 Hydrologic/Flooding Slope Stability TX01417-2688 SLOPE FAILURE L RE SRO N 90 ft 72250.00 1590.00 1954 TX01417 LEON RIVER 32.3627 -98.6756 1987 TCEQ TX DEQ CLEAR CREEK WS SCS SITE 45 DAM TX L Non-Failure 05/30/2015 Hydrologic/Flooding Spillway Deficiency TX00557-2689 SPILLWAY DAMAGE L RE CPD NR 51 ft 2750.00 20.00 1961 TX00557 WHEAT CREEK 33.5346 -97.3762 TCEQ TX DEQ CLEAR CREEK WS SCS SITE 48 DAM TX L Non-Failure 05/30/2015 Hydrologic/Flooding Spillway Deficiency TX00527-2690 SPILLWAY DAMAGE L RE C NR 37 ft 3124.00 46.00 1965 TX00527 GRASS HOPPER CREEK 33.4571 -97.3167 TCEQ TX DEQ LITTLE ELM AND LATERALS WS SCS SITE 19 DAM TX L Non-Failure 05/30/2015 Hydrologic/Flooding Sliding TX01129-2691 SLIDE L RE CRP NR 24 ft 1094.00 38.00 1970 TX01129 TR-LITTLE ELM CREEK 33.3278 -96.8344 TCEQ TX DEQ WEST FORK ABOVE BRIDGEPORT WS SCS SITE 1 DAM TX L Non-Failure 05/30/2015 Hydrologic/Flooding Spillway Pipe Failure TX03211-2692 PIPE FAILURE L RE C NR 46 ft 8855.00 481.00 1951 TX03211 NORTH FORK CROOKED CREEK 33.4222 -98.1051 TCEQ TX DEQ DENTON CREEK WS SCS SITE 16 DAM TX L Non-Failure 05/30/2015 Hydrologic/Flooding Spillway Erosion/Head Cutting TX01524-2693 SEVERE SPILLWAY EROSION L RE C NR 54 ft 2100.00 22.00 1968 TX01524 TR-DENTON CREEK 33.4131 -97.5039 TCEQ TX DEQ FARMERS CREEK WS SCS DEBRIS BASIN 117 TX L Non-Failure 05/30/2015 Hydrologic/Flooding Spillway Deficiency TX04600-2694 SPILLWAY DAMAGE LP RE CPFD NR 41 ft 99.00 6.00 1975 TX04600 TR-WEST FARMERS CREEK 33.68 -97.6461 TCEQ TX DEQ FARMERS CREEK WS SCS DEBRIS BASIN 116 TX L Non-Failure 05/30/2015 Hydrologic/Flooding Spillway Deficiency TX04599-2695 SPILLWAY DAMAGE LP RE CPFD NR 36 ft 83.00 4.00 1975 TX04599 TR-WEST FARMERS CREEK 33.6745 -97.6433 TCEQ TX DEQ DENTON CREEK WS SCS SITE 3 DAM TX L Non-Failure 05/30/2015 Hydrologic/Flooding Spillway Deficiency TX00742-2696 SPILLWAY DAMAGE L RE CPD NR 35 ft 4469.00 71.00 1972 TX00742 DRY VALLEY CREEK 33.5639 -97.6928 TCEQ TX DEQ DENTON CREEK WS SCS SED CONT STR 2-9 TX L Non-Failure 05/30/2015 Hydrologic/Flooding Overtopping TX05529-2697 OVERTOPPING, DID NOT BREACH, EROSION DAMAGE L RE CPD NR 21 ft 84.00 7.00 1978 TX05529 TR-DRY VALLEY CREEK 33.5892 -97.7107 TCEQ TX DEQ DENTON CREEK WS SCS SITE 1B1 DAM TX L Non-Failure 05/30/2015 Hydrologic/Flooding Spillway Pipe Failure TX00732-2698 PIPE DAMAGE L RE CPF NR 29 ft 600.00 15.00 1966 TX00732 TR-DENTON CREEK 33.6093 -97.7465 TCEQ TX DEQ CLEAR CREEK WS SCS SITE 50 DAM TX L Non-Failure 05/30/2015 Hydrologic/Flooding Spillway Deficiency TX00631-2699 SPILLWAY DAMAGE LP RE C NR 50 ft 2824.00 34.00 1961 TX00631 BUCK CREEK 33.3941 -97.2742 TCEQ TX DEQ RICHLAND CREEK WS SCS SITE 10 DAM TX L Non-Failure 05/30/2015 Hydrologic/Flooding Sliding TX01075-2700 SLIDE L RE CR NR 27 ft 1513.00 66.00 1957 TX01075 TR-MUNGER BRANCH 31.778 -96.6645 TCEQ TX DEQ CEDAR CREEK WS SCS SITE 87A DAM TX H Non-Failure 05/30/2015 Hydrologic/Flooding Sliding TX03341-2701 SLIDE L RE CRP Y 43 ft 20147.00 840.00 1969 TX03341 MUDDY CEDAR CREEK 32.7275 -96.1722 1969 TCEQ TX DEQ LOWER EAST FORK LATERALS WS SCS SITE 10 DAM TX H Non-Failure 05/30/2015 Hydrologic/Flooding Spillway Deficiency TX03358-2702 SPILLWAY DAMAGE L RE CRP N 29 ft 2017.00 141.00 1953 TX03358 WARSAW CREEK 32.5495 -96.4174 TCEQ TX DEQ KENDALL LAKE DAM TX L Failure 05/30/2015 Hydrologic/Flooding Overtopping TX05032-2703 OVERTOPPING, BREACHED P RE SR NR 20 ft 76.00 8.00 1965 TX05032 TR-SANDY CREEK 32.3856 -99.0237 TCEQ TX DEQ ELM FORK WS SCS SITE 6J2 DAM TX L Non-Failure 05/30/2015 Hydrologic/Flooding Spillway Deficiency TX00549-2877 SPILLWAY DAMAGE LP RE C NR 46 ft 641.00 10.00 1957 TX00549 WILDCAT CREEK 33.5915 -97.3537 TCEQ ELM FORK WS SCS SITE 7A DAM TX L Non-Failure 05/30/2015 Hydrologic/Flooding Spillway Deficiency TX00571-2878 SEVERE SPILLWAY DAMAGE LP RE C NR 50 ft 2424.00 45.00 1958 TX00571 DRY ELM CREEK 33.7018 -97.3634 TCEQ ELM FORK WS SCS SITE 7B DAM TX L Non-Failure 05/30/2015 Hydrologic/Flooding Spillway Deficiency TX00572-2879 SPILLWAY DAMAGE LP RE C NR 50 ft 1498.00 12.00 1957 TX00572 SQUIRREL CREEK 33.6781 -97.3411 TCEQ ELM FORK WS SCS SITE 7D DAM TX L Non-Failure 05/30/2015 Hydrologic/Flooding Spillway Deficiency TX00574-2880 SPILLWAY DAMAGE LP RE C NR 44 ft 1628.00 32.00 1958 TX00574 TR-DRY ELM CREEK 33.6553 -97.2839 TCEQ ELM FORK WS SCS SITE 7G DAM TX L Non-Failure 05/30/2015 Hydrologic/Flooding Spillway Deficiency TX00577-2881 SPILLWAY DAMAGE LP RE C NR 45 ft 411.00 7.00 1959 TX00577 TR-DRY ELM CREEK 33.6825 -97.3288 TCEQ ELM FORK WS SCS SITE 1 DAM TX L Non-Failure 05/30/2015 Hydrologic/Flooding Spillway Deficiency TX00712-2882 SEVERE SPILLWAY EROSION LP RE C NR 52 ft 1680.00 18.00 1954 TX00712 COPELAND CREEK 33.6654 -97.4887 TCEQ EAST FORK ABOVE LAVON WS SCS SITE 10 DAM TX H Non-Failure 05/30/2015 Hydrologic/Flooding Spillway Deficiency TX01153-2883 SPILLWAY DAMAGE L RE CRP Y 43 ft 778.00 14.00 1952 TX01153 TR-HONEY CREEK 33.3184 -96.6792 TCEQ DENTON CREEK WS SCS SITE 26 DAM TX L Non-Failure 05/30/2015 Hydrologic/Flooding Spillway Deficiency TX01473-2886 SEVERE SPILLWAY DAMAGE L RE CI NR 40 ft 2360.00 39.00 1963 TX01473 MORRIS BRANCH 33.1854 -97.4177 TCEQ DENTON CREEK WS SCS SITE 23A DAM TX H Non-Failure 05/30/2015 Hydrologic/Flooding Spillway Deficiency TX01509-2887 SEVERE SPILLWAY DAMAGE L RE C N 53 ft 2274.00 27.00 1963 TX01509 CATLETT CREEK 33.2728 -97.5585 TCEQ DENTON CREEK WS SCS SITE 23B DAM TX H Non-Failure 05/30/2015 Hydrologic/Flooding Spillway Deficiency TX01510-2888 SEVERE SPILLWAY DAMAGE L RE C N 55 ft 1969.00 24.00 1963 TX01510 TR-CATLETT CREEK 33.2668 -97.5607 TCEQ DENTON CREEK WS SCS SED CONT STR 7 2 TX L Non-Failure 05/30/2015 Hydrologic/Flooding Spillway Deficiency TX06958-2931 SPILLWAY EROSION L RE C NR 38 ft 89.00 0.00 1973 TX06958 BRADEN BRANCH 33.5185 -97.5959 TCEQ UPPER SALT CREEK 18-9 NE L Failure 06/05/2015 Seepage/Internal Erosion Spillway Pipe Failure Piping NE00528-3031 Corrugated metal pipe conduit failed due to corrosion. Failure of the conduit led to internal erosion of the dam. No 0 0 0 0 Roads $100,000 to $500,000 40 L RE O NR 23 ft 91.00 6.00 1960 NE00528 TR-S BR SALT CREEK 40.5814 -96.6754 NE DNR 8:00 AM No NeDNR LAKE DELHI DAM IA S Failure 06/14/2015 Unknown Under Investigation IA01297-2610 Appeared to have been seepage between the concrete wall and the sheetpiling of the construction cofferdam P PG R NR 55 ft 9920.00 440.00 1922 IA01297 MAQUOKETA RIVER 42.4081 -91.3454 IOWA DNR Y ELEVEN MILE CANYON CO H Non-Failure 06/16/2015 Hydrologic/Flooding High Reservoir Level CO00359-3022 unusual (above normal) spillway and outlet works Yes U CNVA S Y 151 ft 128000.00 3500.00 1932 CO00359 SOUTH PLATTE RIVER 38.905 -105.477 DWR CO DWR WILSON C. OK L Failure 06/17/2015 Manmade Action Overtopping Accident or Misoperation OK20735-2849 The dam was overtoped due to unpermitted spillway modification. No 0 0 0 0 Roads Unknown 72 P O NR 24 ft 72.00 4.00 1970 OK20735 TR-JIM CREEK 35.1954 -97.0536 OWRB No OK WRB CHEESMAN CO H Non-Failure 06/17/2015 Hydrologic/Flooding High Reservoir Level CO00357-3023 unusual (above normal) spillway and outlet works discharges Yes U MSVA S Y 221 ft 87227.00 874.00 1905 CO00357 SOUTH PLATTE RIVER 39.2083 -105.274 DWR CO DWR SENATOBIA LAKES INCORPORATED POND DAM MS L Non-Failure 07/01/2015 Structural Stability Slope Stability MS01131-2944 0 0 0 None 0 P RE R NR 14 ft 75.00 0.00 1970 MS01131 TR- HICKAHALA CREEK 34.625 -89.875 MS Dept. of Environmental Quality MS DEQ LAKE LUCERNE DAM OH H Non-Failure 07/01/2015 Hydrologic/Flooding High Reservoir Level OH00358-3061 Near overtopping. Flow through the emergency spillway. No 0 0 0 0 P RE O Y 30 ft 160.00 15.00 1922 OH00358 MCFARLAND CREEK 41.3989 -81.3458 DEPARTMENT OF NATURAL RESOURCES 1 day No OH DNR RIO GRANDE RESERVOIR OH H Non-Failure 07/01/2015 Seepage/Internal Erosion Spillway Chute Failure OH00285-3062 Hole in the chute spillway. No 0 0 0 0 L RE O N 30 ft 135.00 7.00 1959 OH00285 TRIBUTARY TO INDIAN CREEK 38.8839 -82.3892 DEPARTMENT OF NATURAL RESOURCES 1 week Yes OH DNR COOPER VALLEY LLC DAM OH S Non-Failure 07/01/2015 Deterioration or Poor Condition Overtopping OH00863-3063 Plugged spillway which cause minor overtopping. Spillway replaced. No 0 0 0 0 P RE O N 42 ft 48.00 2.00 1963 OH00863 TRIBUTARY TO MCINTYRE CREEK 40.3158 -80.7733 DEPARTMENT OF NATURAL RESOURCES 1 week No OH DNR WAGON WHEEL LAKE DAM OH S Non-Failure 07/01/2015 Hydrologic/Flooding Overtopping OH01268-3065 Overtopping cause some erosion on the downstream slope. No 0 0 0 0 P RE O N 14 ft 118.57 16.00 OH01268 CLOVERLICK CREEK 38.9328 -84.0086 DEPARTMENT OF NATURAL RESOURCES 1 day Yes OH DNR EAGLE CREEK RESERVOIR DAM IN H Non-Failure 07/14/2015 Hydrologic/Flooding High Reservoir Level IN00084-2613 Severe storms led to rising lake levels and gate opening Yes L CN C Y 92 ft 110000.00 1350.00 1967 IN00084 EAGLE CREEK 39.825 -86.3075 IDNR IN DNR Y FOREST LAKE DAM IN H Non-Failure 07/14/2015 Hydrologic/Flooding Spillway Deficiency IN00747-2614 Heavy rains over 24 hours caused damage to the principal spillway and the dam was in a slow state of progressive failure P RE N 19 ft 55.00 5.00 1965 IN00747 UNNAMED TRIBUTARY WHITE LICK CREEK 39.755 -86.4083 IDNR No IN DNR Y DIETRICH RD DAM MO Failure 07/20/2015 Seepage/Internal Erosion Piping MO00000-2857 piping occurred around principle spillway eventually eroding a section of the crest of dam above the pipe. 0.00 0.00 0 MO00000 38.8492 90.9522 None TRENTON LOWER LAKE DAM MO H Non-Failure 07/22/2015 Deterioration or Poor Condition Animal Activity Excessive/Increased Seepage MO10366-2611 Seepage due to animal burrows No 0 0 0 0 P RE R NR 20 ft 1314.00 105.00 1963 MO10366 TR MUDDY CREEK 40.0798 -93.5887 NONE No MO DNR Y INTERNATIONAL ANIMAL PRESERVE POND DAM #56 OH L Non-Failure 08/07/2015 Deterioration or Poor Condition Spillway Erosion/Head Cutting OH02199-3064 Severe erosion in channel spillway. Dam eventually breached. No 0 0 0 0 P RE O N 38 ft 46.80 3.00 OH02199 TRIBUTARY TO MILLER CREEK 39.8589 -81.7375 DEPARTMENT OF NATURAL RESOURCES Yes OH DNR BRYAN UTILITIES LAKE DAM TX H Non-Failure 08/26/2015 Structural Stability Slope Stability TX01869-2683 MAJOR SLOPE FAILURE LP RE O Y 59 ft 20763.00 829.00 1975 TX01869 TR-THOMPSONS/PEACH CREEKS 30.7101 -96.4537 2012 TCEQ TX DEQ ELEVA ROLLER MILL WI H Non-Failure 09/08/2015 Hydrologic/Flooding Overtopping WI10532-2858 Heavy rain overtopped the dam resulting in scour of the d/s embankment PGRE RS N 14 ft 40.00 5.00 1877 WI10532 BIG CREEK 44.5769 -91.4683 WIDNR WI DNR HUMBIRD WI L Non-Failure 09/08/2015 Hydrologic/Flooding Overtopping WI00108-2851 High water event of Sept. 6, 2015 resulted in settlement of rip rap behind both left and right abutment walls. Earthen embankments ovetopped L PGRE R N 19 ft 200.00 33.00 1871 WI00108 EAST FORK HALLS CREEK 44.5252 -90.892 1936 WIDNR WI DNR WEDGES CREEK WI L Non-Failure 09/08/2015 Hydrologic/Flooding Overtopping WI00110-2852 Heavy rains overtopped the embankment causing scour on d/s slope L PGRE R Y 14 ft 110.00 20.00 1930 WI00110 44.5739 -90.7222 1994 WIDNR WI DNR LONG LAKE DAM AK L Non-Failure 09/11/2015 Hydrologic/Flooding Gate/Valve Failure AK00044-2651 Heavy rain event (7.73 in 24 hrs & 2.8 in earlier in the week) resulted in a rainfall induced flood event during which a section of the wooden flashboards failed. 0 0 0 0 U CNPG H NR 30 ft 147000.00 1375.00 1973 AK00044 LONG RIVER 58.1667 -133.733 AKDNR Yes AK DNR Y GUILFORD RESERVOIR MD H Non-Failure 09/17/2015 Manmade Action Accident Or Misoperation MD00106-3082 Dam Safety personnel observed contractor excavating large hole in dam embankment near downstream toe. Unpermitted work was ordered stopped and hole backfilled. No L RE S Y 35 ft 134.00 7.00 1893 MD00106 OFFSTREAM-STONEY RUN 39.345 -76.6167 2006 MD DAM SAFETY MDE Dam Safety Program HORSE RUN NO. 1 DAM MB-42 OH S Non-Failure 10/01/2015 Structural Stability Slope Stability OH00816-3066 Slope instability No 0 0 0 0 P RE O Y 60 ft 2012.00 27.00 1952 OH00816 HORSE RUN 39.7339 -81.7328 DEPARTMENT OF NATURAL RESOURCES Yes OH DNR COOPER POND DAM OH L Non-Failure 10/01/2015 Malfunction of Equipment/Gate Gate/Valve Failure OH00227-3067 Broken lake drain valve No 0 0 0 0 P RE O N 24 ft 84.00 9.00 1971 OH00227 TRIBUTARY TO HUGLE RUN 40.7333 -81.1444 DEPARTMENT OF NATURAL RESOURCES Yes OH DNR SCNONAME 02027 SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00312-2615 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 17 ft 308.00 35.00 1955 SC00312 HOLLOW CREEK 33.6467 -81.2117 SCDHEC SC DHEC Website SCNONAME 02019 SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00305-2616 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 14 ft 85.00 12.00 1945 SC00305 GOODLAND CREEK 33.595 -81.2867 SCDHEC SC DHEC Website ABLE/COBETT POND DAM SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00370-2617 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 10 ft 58.00 11.00 1955 SC00370 LITTLE HOLLOW CREEK 33.6217 -81.2333 SCDHEC SC DHEC Website SCNONAME 14001 SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00718-2618 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 15 ft 263.00 36.00 1900 SC00718 MILL BRANCH 33.8133 -80.09 SCDHEC SC DHEC Website SCNONAME 16006 SC S Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00612-2620 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 20 ft 357.00 28.00 1957 SC00612 SEED BRANCH 34.42 -79.9417 SCDHEC SC DHEC Website COOK POND DAM SC S Failure 10/04/2015 Hydrologic/Flooding Overtopping SC01488-2621 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R Y 13 ft 53.00 7.00 1963 SC01488 TR-KELLY CREEK 34.1517 -80.775 SCDHEC SC DHEC Website LEXINGTON MILL POND DAM SC H Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00143-2622 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R Y 20 ft 440.00 28.00 1900 SC00143 TWELVEMILE CREEK 33.9767 -81.23 SCDHEC SC DHEC Website GIBSON'S POND DAM SC S Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00169-2623 Heavy rains-as much as 16 inches caused several dams to overtop and fail. L RE R Y 15 ft 240.00 28.00 1900 SC00169 TWELVE MILE CREEK 33.9683 -81.2433 SCDHEC SC DHEC Website SCNONAME 32008 SC S Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00148-2624 Heavy rains-as much as 16 inches caused several dams to overtop and fail. L RE R Y 14 ft 359.00 64.00 1900 SC00148 TWELVE MILE CREEK 33.9583 -81.26 SCDHEC SC DHEC Website WALDEN PLACE POND SC H Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00073-2636 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R Y 25 ft 280.00 8.00 1950 SC00073 SPEARS CK 34.1167 -80.8467 SCDHEC SC DHEC Website PINEWOOD LAKE DAM SC S Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00055-2637 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R Y 14 ft 263.00 35.00 1900 SC00055 MILL CK 33.9433 -80.91 SCDHEC SC DHEC Website COVINGTONS LAKE DAM SC S Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00079-2638 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 16 ft 76.00 10.00 1950 SC00079 ROBERTS BRANCH 34.135 -80.975 SCDHEC SC DHEC Website MURRAY POND DAM SC S Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00051-2639 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 16 ft 1310.00 148.00 1930 SC00051 COLONELS CK 33.985 -80.7083 SCDHEC SC DHEC Website WILSON MILLPOND DAM SC S Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00059-2640 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R Y 14 ft 134.00 20.00 1960 SC00059 JUMPING RUN CK 34 -80.7417 SCDHEC SC DHEC Website WESTONS POND DAM SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00056-2641 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 13 ft 324.00 40.00 1932 SC00056 TOMS CREEK 33.8833 -80.7683 SCDHEC SC DHEC Website DUFFIES POND DAM SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00064-2642 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 14 ft 720.00 120.00 1967 SC00064 CEDAR CREEK 33.8417 -80.8517 SCDHEC SC DHEC Website ELLERBEES MILLPOND DAM SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC01404-2643 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 7 ft 151.00 42.00 1830 SC01404 RAFTING CREEK 34.0683 -80.5317 SCDHEC SC DHEC Website SCNONAME 31009 SC S Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00498-2644 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE I Y 15 ft 312.00 24.00 1930 SC00498 TURKEY CREEK 0 0 1998 SCDHEC SC DHEC Website SCNONAME 38070 SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00447-2626 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 14 ft 87.00 12.00 1960 SC00447 SALEM CREEK 33.6367 -81.16 SCDHEC SC DHEC Website SCNONAME 38066 SC S Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00444-2627 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R Y 13 ft 182.00 25.00 1960 SC00444 TAMPA CREEK 33.5333 -81.2367 SCDHEC SC DHEC Website SCNONAME 38036 SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00419-2628 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 10 ft 181.00 32.00 1960 SC00419 BROWNING BRANCH 33.5217 -80.515 SCDHEC SC DHEC Website SCNONAME 40005 SC H Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00050-2629 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R Y 20 ft 960.00 68.00 1938 SC00050 JACKSON CREEK 34.0483 -80.9583 1988 SCDHEC SC DHEC Website SCNONAME 40027 SC H Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00070-2630 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R Y 20 ft 297.00 25.00 1955 SC00070 GILLS CK 34.04 -80.9517 SCDHEC SC DHEC Website SCNONAME 40026 SC H Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00069-2631 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R Y 20 ft 230.00 21.00 1900 SC00069 GILLS CREEK 34.0367 -80.955 SCDHEC SC DHEC Website WILDEWOOD POND #2 SC S Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00100-2632 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R Y 24 ft 281.00 27.00 1963 SC00100 TR-JACKSON CK 34.0967 -80.8867 2010 SCDHEC SC DHEC Website SCNONAME 40002 SC H Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00047-2633 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 11 ft 260.00 32.00 1900 SC00047 CRANE CREEK 34.115 -80.9833 SCDHEC SC DHEC Website ULMERS POND DAM SC H Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00065-2634 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R Y 17 ft 96.00 17.00 1940 SC00065 TR-MILL CK 33.9683 -80.8967 1994 SCDHEC SC DHEC Website SUNVIEW LAKE DAM SC S Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00067-2635 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R Y 11 ft 234.00 45.00 1949 SC00067 MILL CK 33.9667 -80.9117 SCDHEC SC DHEC Website M R TROTTER DAM SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC02473-3036 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 24 ft 90.00 9.00 1971 SC02473 33.8983 -80.7283 SCDHEC SC DHEC SMITH MILLPOND DAM SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC02411-3037 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 26 ft 62.40 25.00 SC02411 34.0667 -79.3458 SCDHEC SC DHEC HAITHCOCK POND DAM SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00052-3038 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 11 ft 147.00 26.00 1946 SC00052 33.9583 -80.755 SCDHEC SC DHEC DRAFTS POND DAM SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00063-3039 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 14 ft 720.00 32.00 1967 SC00063 33.825 -80.7283 SCDHEC SC DHEC SCNONAME 32094 SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC01354-3040 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 14 ft 72.00 10.00 1910 SC01354 33.73 -81.0367 SCDHEC SC DHEC BOYLE POND DAM SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC01431-3041 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 16 ft 55.00 160.00 1957 SC01431 33.88 -80.4383 SCDHEC SC DHEC MCCRAY LAKE DAM SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC01429-3042 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 14 ft 71.00 52.00 1908 SC01429 33.885 -80.4617 SCDHEC SC DHEC TOUCHBERRY LOWER POND DAM SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC01450-3043 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 9 ft 73.00 15.00 1958 SC01450 33.6967 -80.53 SCDHEC SC DHEC BLACK CREST FARM POND DAM SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC01442-3044 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE PR N 20 ft 165.00 10.00 1970 SC01442 33.8417 -80.3283 SCDHEC SC DHEC DOGWOOD LAKE DAM SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC01447-3045 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 14 ft 67.00 16.00 1850 SC01447 33.8017 -80.33 SCDHEC SC DHEC SCNONAME 02110 SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00378-3046 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 36 ft 132.00 18.00 1963 SC00378 33.5883 -81.345 SCDHEC SC DHEC SCNONAME 28045 SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00484-3047 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 20 ft 112.00 7.00 1955 SC00484 34.1117 -80.7517 SCDHEC SC DHEC SCNONAME 09031 SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00594-3048 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 18 ft 106.00 25.00 1938 SC00594 33.5833 -80.5967 SCDHEC SC DHEC SCNONAME 09040 SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00603-3049 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 15 ft 109.00 21.00 1930 SC00603 33.56 -80.7383 SCDHEC SC DHEC CUTTINO POND DAM SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC01928-3050 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 18 ft 90.00 10.00 1960 SC01928 33.8167 -80.1967 SCDHEC SC DHEC SCNONAME 14005 SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00722-3051 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 13 ft 320.00 34.00 1900 SC00722 33.8483 -80.005 SCDHEC SC DHEC SCNONAME 14008 SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00725-3052 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 16 ft 92.00 34.00 1875 SC00725 33.6533 -80.495 SCDHEC SC DHEC WARDS PASTURE POND DAM SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC01918-3053 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 11 ft 198.00 12.00 1970 SC01918 33.5667 -80.2867 SCDHEC SC DHEC SCNONAME 38011 SC S Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00407-3054 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R Y 13 ft 108.00 15.00 1920 SC00407 33.525 -80.935 SCDHEC SC DHEC BOYDS POND DAM SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00096-3055 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE IPR N 13 ft 68.00 75.00 1963 SC00096 TOMS CREEK 33.9183 -80.7567 SCDHEC SC DHEC SCNONAME 14003 SC L Failure 10/04/2015 Hydrologic/Flooding Overtopping SC00720-3056 Heavy rains-as much as 16 inches caused several dams to overtop and fail. P RE R N 15 ft 91.00 26.00 1960 SC00720 TR-BIG BRANCH 33.6533 -80.4433 SCDHEC SC DHEC COLUMBIA EMBANKMENT AND CANAL SPILLWAY SC S Failure 10/04/2015 Malfunction of Equipment/Gate Debris Clogging Insufficient Spillway Capacity Overtopping SC01064-3505 Breach of 125 yr old canal dike due to debris stuck beneath canal headgates prevent gate closure. Canal embankment overtopped and failed. Hurricane Joaquin Yes 0 0 0 0 None $50 million to $100 million Temp water supply pipes & pumps. Cofferdam across canal. Installed bulkheads upstream of headgates. L REST HS Y 8 ft 800.00 265.00 1882 SC01064 BROAD 34.0333 -81.0665 FERC 8:00 PM Yes ASDSO Decade Dam Series INTREPID POTASH WEST PLANT DAM NM L Failure 10/17/2015 Seepage/Internal Erosion Piping Cracking Settlement NM00436-3036 Piping is believed to be initiated by cracking across the reservoir floor and dam embankment caused by land subsidence due to mining activities underneath the dam and reservoir footprint. Piping tunnel was 1-2 feet diameter (not measured). No 0 0 0 0 None 1.5 P RE T NR 68 ft 2078.00 128.00 1978 NM00436 PECOS RIVER-TR 32.4836 -103.927 Office of the State Engineer 7:15 AM 1 day Yes Dam owner and NM Dam Safety Bureau Y RICHLAND CREEK WS SCS SITE 66 DAM TX L Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX00432-2870 SEVERE SPILLWAY DAMAGE L RE C NR 24 ft 284.00 12.00 1964 TX00432 TR-WHITE ROCK CREEK 31.9827 -96.8903 TCEQ RICHLAND CREEK WS SCS SITE 14 DAM TX L Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX02623-2666 SPILLWAY DAMAGE L RE C NR 22 ft 1298.00 50.00 1965 TX02623 TR-PIN OAK CREEK 31.8308 -96.5963 TCEQ TX DEQ RICHLAND CREEK WS SCS SITE 14A DAM TX L Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX02622-2667 SPILLWAY DAMAGE L RE C NR 22 ft 974.00 42.00 1964 TX02622 TR-PIN OAK CREEK 31.8398 -96.608 2005 TCEQ TX DEQ RICHLAND CREEK WS SCS SITE 98A DAM TX L Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX02611-2668 SPILLWAY DAMAGE L RE C NR 36 ft 4391.00 126.00 1972 TX02611 HACKBERRY CREEK 32.0185 -96.844 TCEQ TX DEQ RICHLAND CREEK WS SCS SITE 137G DAM TX H Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX02582-2669 SPILLWAY DAMAGE L RE C Y 29 ft 5380.00 70.00 1971 TX02582 BRIAR CREEK 32.0595 -96.578 2011 TCEQ TX DEQ RICHLAND CREEK WS SCS SITE 111 DAM TX L Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX02638-2670 SEVERE SPILLWAY DAMAGE L RE C NR 30 ft 281.00 12.00 1970 TX02638 TR-BATTLE CREEK 31.8939 -96.684 2005 TCEQ TX DEQ RICHLAND CREEK WS SCS SITE 107B DAM TX L Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX02630-2671 SEVERE SPILLWAY DAMAGE L RE PF NR 29 ft 595.00 27.00 1964 TX02630 TR-BATTLE CREEK 31.8752 -96.7061 TCEQ TX DEQ RICHLAND CREEK WS SCS SITE 107A DAM TX L Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX02629-2672 SEVERE SPILLWAY DAMAGE L RE C NR 31 ft 886.00 19.00 1970 TX02629 TR-BATTLE CREEK 31.8655 -96.7147 TCEQ TX DEQ RICHLAND CREEK WS SCS SITE 110 DAM TX L Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX02634-2673 SEVERE SPILLWAY DAMAGE L RE C NR 30 ft 791.00 36.00 1970 TX02634 TR-BATTLE CREEK 31.8914 -96.6901 TCEQ TX DEQ RICHLAND CREEK WS SCS SITE 31 DAM TX L Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX02624-2674 SEVERE SPILLWAY DAMAGE L RE I NR 35 ft 5838.00 56.00 1963 TX02624 BOARD CREEK 31.8705 -96.5676 2010 TCEQ TX DEQ RICHLAND CREEK WS SCS SITE 136REV DAM TX L Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX04588-2675 SEVERE SPILLWAY DAMAGE L RE C NR 34 ft 753.00 21.00 1977 TX04588 TR-RUSH CREEK 32.0257 -96.603 TCEQ TX DEQ RICHLAND CREEK WS SCS SITE 129 DAM TX L Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX02649-2676 SEVERE SPILLWAY DAMAGE L RE C NR 25 ft 926.00 18.00 1961 TX02649 TR-MELTON BRANCH 31.969 -96.5914 TCEQ TX DEQ RICHLAND CREEK WS SCS SITE 100A DAM TX L Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX02612-2677 SEVERE SPILLWAY DAMAGE L RE C NR 31 ft 2466.00 50.00 1972 TX02612 TR-HACKBERRY CREEK 32.0227 -96.835 TCEQ TX DEQ RICHLAND CREEK WS SCS SITE 114 DAM TX L Non-Failure 10/25/2015 Hydrologic/Flooding Overtopping TX02635-2678 OVERTOPPING, DID NOT BREACH L RE C NR 21 ft 340.00 16.00 1970 TX02635 TR-BATTLE CREEK 31.9011 -96.6474 TCEQ TX DEQ RICHLAND CREEK WS SCS SITE 113 DAM TX L Failure 10/25/2015 Hydrologic/Flooding Overtopping TX02636-2679 OVERTOPPING, PARTIALLY BREACHED L RE C NR 26 ft 638.00 30.00 1970 TX02636 TR-BATTLE CREEK 31.9069 -96.6653 TCEQ TX DEQ MANN LAKE DAM TX S Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX05067-2680 SPILLWAY FAILURE, LAKE DRAINED P RE Y 16 ft 108.00 0.00 1957 TX05067 BRAZOS RIVER 31.4314 -96.9698 TCEQ TX DEQ RICE LAKE DAM TX L Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX02575-2681 SPILLWAY FAILURE, LAKE DRAINED P RE RP NR 20 ft 544.00 22.00 1960 TX02575 RICE BRANCH 32.2407 -96.4891 TCEQ TX DEQ LAKE HALBERT DAM TX S Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Erosion/Head Cutting TX02568-2682 ADDITIONAL SPILLWAY DAMAGE L RE S Y 49 ft 14400.00 649.00 1921 TX02568 ELM CREEK 32.0764 -96.4058 1994 TCEQ TX DEQ RICHLAND CREEK WS SCS SITE 6A DAM TX L Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX00433-2871 SEVERE SPILLWAY DAMAGE L RE C NR 24 ft 1036.00 35.00 1964 TX00433 TR-NORTH FORK PIN OAK CREEK 31.8203 -96.7322 TCEQ RICHLAND CREEK WS SCS SITE 6 DAM TX L Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX00434-2872 SPILLWAY DAMAGE L RE C NR 30 ft 516.00 17.00 1964 TX00434 TR-NORTH FORK PIN OAK CREEK 31.8284 -96.7323 TCEQ RICHLAND CREEK WS SCS SITE 49 DAM TX L Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX00437-2873 SEVERE SPILLWAY DAMAGE L RE C NR 28 ft 329.00 13.00 1961 TX00437 TR-RICHLAND CREEK 32.0036 -96.8563 TCEQ RICHLAND CREEK WS SCS SITE 45 DAM TX L Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX00440-2874 SEVERE SPILLWAY DAMAGE L RE C NR 30 ft 414.00 0.00 1961 TX00440 TR-RICHLAND CREEK 32.0568 -96.9137 TCEQ RICHLAND CREEK WS SCS SITE 63 DAM TX L Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX00441-2875 SEVERE SPILLWAY DAMAGE L RE C NR 58 ft 2778.00 32.00 1965 TX00441 GROVE CREEK 32.0001 -96.9873 TCEQ RICHLAND CREEK WS SCS SITE 46 DAM TX L Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX00442-2876 SEVERE SPILLWAY DAMAGE L RE C NR 27 ft 309.00 11.00 1961 TX00442 TR-RICHLAND CREEK 32.0436 -96.9001 TCEQ TEHUACANA CREEK WS SCS SITE 8 DAM TX L Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX04118-2911 SPILLWAY DAMAGE LP RE CP NR 28 ft 1528.00 37.00 1964 TX04118 MOOSE CREEK 31.7426 -96.9988 TCEQ RICHLAND CREEK WS SCS SITE 81 DAM TX L Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX04227-2912 SPILLWAY DAMAGE L RE C NR 34 ft 703.00 32.00 1974 TX04227 TR-ASH CREEK 31.8944 -96.9638 1992 TCEQ RICHLAND CREEK WS SCS SITE 82 DAM TX S Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX04228-2913 SEVERE SPILLWAY DAMAGE L RE C N 32 ft 1222.00 44.00 1974 TX04228 TR-ASH CREEK 31.8999 -96.9482 TCEQ RICHLAND CREEK WS SCS SITE 90 DAM TX L Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX04233-2914 SPILLWAY DAMAGE L RE C NR 25 ft 429.00 16.00 1974 TX04233 TR-LITTLE COTTONWOOD CREEK 31.8854 -96.8571 TCEQ TEHUACANA CREEK WS SCS GSS 5 1 TX L Non-Failure 10/25/2015 Hydrologic/Flooding Overtopping TX04468-2917 OVERTOPPED, DID NOT BREACH SPILLWAY DAMAGE L RE CPO NR 17 ft 129.00 7.00 1977 TX04468 BROOKEEN CREEK 31.886 -97.04 TCEQ RICHLAND CREEK WS SCS SITE 92A DAM TX L Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX04473-2918 SPILLWAY DAMAGE L RE C NR 30 ft 734.00 12.00 1977 TX04473 TR-COTTONWOOD CREEK 31.817 -96.8798 TCEQ RICHLAND CREEK WS SCS SITE 71A DAM TX S Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX04630-2920 SEVERE SPILLWAY DAMAGE L RE C N 25 ft 704.00 16.00 1979 TX04630 TR-BYNUM CREEK 31.9619 -96.9201 TCEQ RICHLAND CREEK WS SCS SITE 65 DAM TX L Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX04712-2923 SEVERE SPILLWAY DAMAGE L RE C NR 33 ft 440.00 12.00 1977 TX04712 TR-PECAN CREEK 31.9848 -96.9399 TCEQ RICHLAND CREEK WS SCS SITE 91A DAM TX L Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX04754-2924 SPILLWAY DAMAGE L RE C NR 32 ft 1474.00 37.00 1979 TX04754 LITTLE COTTONWOOD CREEK 31.8732 -96.8663 TCEQ RICHLAND CREEK WS SCS SITE 70 DAM TX S Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX05774-2927 SEVERE SPILLWAY DAMAGE L RE C N 33 ft 535.00 21.00 1981 TX05774 TR-BYNUM CREEK 31.9498 -96.935 TCEQ RICHLAND CREEK WS SCS SITE 92B TX L Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX06715-2929 SPILLWAY DAMAGE L RE PF NR 30 ft 450.00 13.00 1986 TX06715 TR-COTTONWOOD CREEK 31.8544 -96.926 TCEQ TEHUACANA CREEK WS SCS SITE 2A DAM TX L Non-Failure 10/25/2015 Hydrologic/Flooding Spillway Deficiency TX06718-2930 SEVERE SPILLWAY DAMAGE L RE C NR 42 ft 2016.00 44.00 1979 TX06718 MESQUITE CREEK 31.8033 -96.9583 TCEQ PLUM CREEK WS SCS SITE 6 DAM TX H Non-Failure 10/28/2015 Hydrologic/Flooding Spillway Deficiency TX01576-2665 SPILLWAY DAMAGE L RE C Y 36 ft 5663.00 142.00 1967 TX01576 PORTER CREEK 30.0022 -97.8229 TCEQ TX DEQ PLUM CREEK WS SCS SITE 5 DAM TX H Non-Failure 10/28/2015 Hydrologic/Flooding Spillway Deficiency TX01575-2889 SPILLWAY DAMAGE L RE CI Y 38 ft 3368.00 41.00 1963 TX01575 BUNTON BRANCH 30.0024 -97.8395 2012 TCEQ PLUM CREEK WS SCS SITE 10 DAM TX H Non-Failure 10/28/2015 Hydrologic/Flooding Spillway Deficiency TX01577-2890 SPILLWAY DAMAGE L RE C Y 36 ft 1309.00 33.00 1963 TX01577 BRUSHY CREEK 30.0631 -97.8003 TCEQ PLUM CREEK WS SCS SITE 11 DAM TX L Non-Failure 10/28/2015 Hydrologic/Flooding Spillway Deficiency TX01578-2891 SPILLWAY DAMAGE L RE IR NR 37 ft 2250.00 39.00 1962 TX01578 TR-BRUSHY CREEK 30.0466 -97.7746 TCEQ PLUM CREEK WS SCS SITE 12 DAM TX H Non-Failure 10/28/2015 Hydrologic/Flooding Spillway Deficiency TX01579-2892 SPILLWAY DAMAGE L RE C Y 28 ft 2936.00 55.00 1963 TX01579 BRUSHY CREEK 30.0359 -97.7727 TCEQ PLUM CREEK WS SCS SITE 1 DAM TX H Non-Failure 10/28/2015 Hydrologic/Flooding Spillway Deficiency TX01582-2893 SPILLWAY DAMAGE L RE CR Y 33 ft 1706.00 24.00 1966 TX01582 PLUM CREEK 30.0194 -97.8791 TCEQ PLUM CREEK WS SCS SITE 2 DAM TX H Non-Failure 10/28/2015 Hydrologic/Flooding Spillway Deficiency TX01589-2894 SPILLWAY DAMAGE L RE C Y 38 ft 1603.00 43.00 1969 TX01589 TR-PLUM CREEK 29.9842 -97.8574 TCEQ PLUM CREEK WS SCS SITE 17 DAM TX H Non-Failure 10/28/2015 Hydrologic/Flooding Spillway Deficiency TX03425-2906 SPILLWAY DAMAGE L RE C Y 35 ft 5312.00 51.00 1969 TX03425 COWPEN CREEK 29.9999 -97.709 TCEQ PLUM CREEK WS SCS SITE 16 DAM TX S Non-Failure 10/28/2015 Hydrologic/Flooding Spillway Deficiency TX04657-2921 SPILLWAY DAMAGE L RE C N 41 ft 3642.00 20.00 1975 TX04657 ELM CREEK 30.0037 -97.7399 TCEQ PLUM CREEK WS SCS SITE 7 DAM TX H Non-Failure 10/28/2015 Hydrologic/Flooding Spillway Deficiency TX04711-2922 SPILLWAY DAMAGE L RE C Y 40 ft 498.00 11.00 1975 TX04711 TR-PLUM CREEK 29.9674 -97.7949 TCEQ ROBIN HOOD LAKE NUMBER 4 DAM MS H Failure 11/06/2015 Hydrologic/Flooding Overtopping MS01275-2945 WE WERE NOTIFIED OF THE FAILURE ON DECEMBER 16, 2015. 0 0 1 P RE R N 17 ft 84.00 8.00 1964 MS01275 TR- TUMBALOO CREEK 32.2011 -89.9617 MS Dept. of Environmental Quality MS DEQ PINEY WOODS LAKE DAM MS L Failure 11/20/2015 Deterioration or Poor Condition Unknown MS01305-2946 0 0 0 P RE R NR 23 ft 350.00 0.00 MS01305 32.0683 -89.9983 MS Dept. of Environmental Quality MS DEQ MARSTON LAKE - SOUTH DAM CO H Non-Failure 11/23/2015 Seepage/Internal Erosion Excessive/Increased Seepage CO02798-3024 Unusual piezometer readings and seepage at the top of the first filling U RE S Y 33 ft 21100.00 652.00 1899 CO02798 SOUTH PLATTE RIVER-OS 39.6237 -105.062 DWR CO DWR FINCH'S MILLPOND NC S Failure 11/28/2015 Deterioration or Poor Condition Erosion NC00891-2645 Erosion over the years led to collapse of a portion of the dam P RE R N 15 ft 469.00 0.00 1924 NC00891 BLOOMERY SWAMP 35.763 -77.997 NCDENR Local News Source The Wilson Times Y LAKE KIMBLE DAM TX L Non-Failure 11/30/2015 Deterioration or Poor Condition Spillway Pipe Failure TX03743-2664 SPILLWAY PIPE FAILURE P RE R NR 23 ft 500.00 119.00 1964 TX03743 KIMBALL CREEK 30.511 -94.4396 TCEQ TX DEQ CLAYTON COUNTY INTERNATIONAL PARK LAKE DAM GA H Non-Failure 12/01/2015 Hydrologic/Flooding Other GA03698-3325 Concrete wall of a building built into the dam collapsed from heavy rainfall event in December. L RE R N 19 ft 106.00 13.00 1967 GA03698 UNKNOWN 33.5253 -84.3128 2006 GA-SAFE DAMS PROGRAM GA-SAFE DAMS PROGRAM LAKE REDSTONE WI H Non-Failure 12/07/2015 Structural Stability Cracking WI00707-2853 L PGRE R Y 50 ft 15200.00 612.00 1967 WI00707 BIG CREEK 43.5867 -90.0871 WIDNR WI DNR LEWISVILLE LAKE TX H Non-Failure 12/14/2015 Structural Stability Slope Stability TX00008-2663 SLIDE F RE SRCH Y 130 ft 1804300.00 23280.00 1955 TX00008 ELM FORK OF THE TRINITY RIVER 33.0667 -97.0167 TCEQ CITY OF GRAND SALINE DAM TX L Non-Failure 12/27/2015 Hydrologic/Flooding Spillway Deficiency TX02837-2902 PIPE FAILURE L RE R NR 31 ft 673.00 64.00 1924 TX02837 SIMMONS CREEK 32.6839 -95.7361 TCEQ MOONSHINE CREEK DAM NO 2 TX L Non-Failure 12/27/2015 Hydrologic/Flooding Spillway Deficiency TX04344 -2915 SEVERE SPILLWAY DAMAGE P RE R NR 21 ft 58.00 0.00 1969 TX04344 TR-COON CREEK 32.1634 -95.7848 TCEQ BIG CREEK DAM TX H Non-Failure 12/27/2015 Hydrologic/Flooding Erosion TX06314-2928 SEVERE UPSTREAM SLOPE SLIDE L RE S N 38 ft 6625.00 15.00 1987 TX06314 BIG CREEK 33.3924 -95.6941 2001 TCEQ LAKE MONTEREY DAM OH H Non-Failure 12/27/2015 Hydrologic/Flooding Erosion OH01366-3068 Dam was in the process of being breached. Severe erosion in partical breach channel. No 0 0 0 0 P RE O Y 25 ft 58.00 5.00 OH01366 TRIBUTARY TO BRUSHY FORK 39.1333 -84.09 DEPARTMENT OF NATURAL RESOURCES Yes OH DNR MAYWOOD SUBDIVISION - SHAHKOKA DAM MS H Non-Failure 12/28/2015 Hydrologic/Flooding Overtopping MS01512-2947 0 0 0 Water/sewer lines P RE R Y 21 ft 373.00 23.00 1948 MS01512 CAMP CREEK 34.9678 -89.8506 MS Dept. of Environmental Quality MS DEQ VAN LAKE DAM TX L Non-Failure 12/29/2015 Structural Stability Sliding TX00304-2869 DOWNSTREAM SLOPE SLIDE L RE S NR 36 ft 2050.00 0.00 1949 TX00304 TR-VILLAGE CREEK 32.5483 -95.5883 TCEQ MIDDLEBROOK DEVELOP. LAKE DAM MO L Non-Failure 12/29/2015 Deterioration or Poor Condition Spillway Pipe Failure MO30163-2856 principal spillway pipe partially failed (CMP 20 approximately 20 yrs old) No 0 P RE R N 49 ft 270.00 18.00 1971 MO30163 TR-EAST FORK BLACK RIVER 37.5711 -90.8693 2001 DAM AND RESERVOIR SAFETY PROG DELTA CREST SUBDIVISION LAKE DAM MS L Non-Failure 12/29/2015 Hydrologic/Flooding Overtopping MS01572-2948 DOWNSTREAM RISER WAS CLOGGED SO EMERGENCY SPILLWAY WAS RUNNING AND PERFORMING WELL. WE RECEIVED A CALL FROM THE JONES COUNTY EMERGENCY MANAGER AND RESPONDED THE NEXT DAY. BY THE TIME WE GOT THERE THEY HAD FIXED THE DOWNSTREAM RISER AND WATER HAD STOPPE 0 0 0 None P RE R NR 16 ft 120.00 0.00 MS01572 34.8283 -90.195 MS Dept. of Environmental Quality MS DEQ T AND P LAKE DAM TX L Failure 12/30/2015 Hydrologic/Flooding Overtopping TX00361-2842 0 none L RE SR NR 10 ft 76.00 15.00 1915 TX00361 TR-RICE CREEK 33.4661 -94.4452 TCEQ TX CEQ LATHAM POND DAM MS L Failure 01/26/2016 Seepage/Internal Erosion Piping MS01784-2949 0 NONE, BUT ROAD WAS CLOSED IN CASE EMERGENCY RELEASE OF WATER OCCURRED; DID CLOSE DOWNSTREAM ROAD AT THE TOE OF DAM 0 Roads P RE R NR 14 ft 54.00 0.00 MS01784 32.2167 -90.3517 MS Dept. of Environmental Quality MS DEQ TRACE STATE PARK DAM MS H Non-Failure 01/29/2016 Structural Stability Slope Stability MS02804-2950 0 0 0 None 0 S RE R Y 47 ft 12925.00 565.00 1974 MS02804 34.2367 -88.895 MS Dept. of Environmental Quality MS DEQ TRACE STATE PARK DAM MS H Non-Failure 02/01/2016 Seepage/Internal Erosion Piping MS02804-2951 0 0 0 Roads 0 S RE R Y 47 ft 12925.00 565.00 1974 MS02804 34.2367 -88.895 MS Dept. of Environmental Quality MS DEQ GAYLE EVANS LAKE DAM MS L Non-Failure 02/15/2016 Hydrologic/Flooding Overtopping MS02814-2952 0 P RE R NR 25 ft 125.00 0.00 MS02814 31.5167 -90.7083 MS Dept. of Environmental Quality MS DEQ CASTLEMAN CREEK WS SCS SITE 4 DAM TX S Non-Failure 03/09/2016 Hydrologic/Flooding Sliding TX04507-2919 SLIDE LP RE C Y 31 ft 760.00 15.00 1975 TX04507 TR-CASTLEMAN CREEK 31.422 -97.1069 TCEQ LAKE WOOD DAM TX H Non-Failure 03/10/2016 Unknown Gate/Valve Failure TX01913-3288 SPILLWAY GATE FAILED S RE HR Y 42 ft 27450.00 488.00 1931 TX01913 GUADALUPE RIVER 29.4684 -97.4921 TCEQ TCEQ LAKE DEERWOOD DAM TX S Non-Failure 03/10/2016 Hydrologic/Flooding Erosion TX03582-2907 EROSION OF DOWNSTREAM SLOPE P RE R Y 27 ft 396.00 25.00 1971 TX03582 TR-BRUSHY CREEK 32.7131 -94.5612 TCEQ TRUMAN ROBERTS NUMBER 1 DAM MS L Non-Failure 03/10/2016 Structural Stability Slope Stability MS03096-2953 0 0 Roads 0 P RE R NR 19 ft 267.00 0.00 MS03096 31.0572 -89.3397 MS Dept. of Environmental Quality MS DEQ ALBRITTON LAKE DAM MS S Non-Failure 03/11/2016 Hydrologic/Flooding Overtopping MS03326-2954 0 P RE R NR 33 ft 1369.00 80.00 1995 MS03326 TR. MILL CREEK 30.9806 -89.6881 MS Dept. of Environmental Quality 5:00 AM MS DEQ SANDSTONE LAKE DAM MS L Non-Failure 03/11/2016 Hydrologic/Flooding Overtopping MS03679-2955 0 0 0 P RE R NR 16 ft 200.00 14.00 2006 MS03679 CEDAR GROVE CREEK 33.7639 -88.3619 MS Dept. of Environmental Quality 12:00 PM MS DEQ LIRETTE LAKE DAM MS L Non-Failure 03/12/2016 Seepage/Internal Erosion Piping MS03742-2956 A SMALL BERM OF QUIKCRETE BAGS WAS BUILT AROUND THE AREA AND THE PIPING DID NOT PROGRESS. 0 P RE R NR 28 ft 196.75 17.00 2009 MS03742 31.6619 -88.5728 MS Dept. of Environmental Quality MS DEQ MONONAME 352 MO L Non-Failure 03/15/2016 Structural Stability Sliding MO30528-2855 land slide on downstream face of dam reported P RE S NR 26 ft 125.00 9.00 1970 MO30528 TR JAMES BRANCH 37.7258 -91.2425 NONE MO DNR BEAVER PARK CO H Non-Failure 03/18/2016 Seepage/Internal Erosion Sinkhole CO00763-3014 Sinkholes developed in the reservoir area on the far left abutment Yes S ER RFIO Y 114 ft 5800.00 94.00 1912 CO00763 BEAVER CREEK 37.5961 -106.667 DWR CO DWR ADOBE CREEK CO H Non-Failure 03/22/2016 Seepage/Internal Erosion Spillway Pipe Failure Sinkhole CO00515-3015 New active seepage along an outlet conduit, creating voids where none were before. Yes P RE IR Y 41 ft 85000.00 4105.00 1904 CO00515 ADOBE CREEK-OS 38.235 -103.281 DWR CO DWR ROCK ISLAND LAKE DAM OH L Non-Failure 04/01/2016 Deterioration or Poor Condition Spillway Pipe Failure Sinkhole OH01007-3069 CMP spillway collapsed and large sinkhole on the downstream slope. No 0 0 0 0 P RE O N 34 ft 109.90 8.00 1964 OH01007 TRIBUTARY TO MEANDER CREEK 41.0717 -80.7958 DEPARTMENT OF NATURAL RESOURCES Yes OH DNR TANGLEWOOD LAKE DAM OH S Non-Failure 04/01/2016 Seepage/Internal Erosion Piping OH00173-3070 Erosion pipe through left end of dam. Lowered pool by cutting channel in the left abutment. No 0 0 0 0 P RE O Y 31 ft 52.20 4.00 1945 OH00173 TRIBUTARY TO GREAT MIAMI RIVER 39.3639 -84.5808 DEPARTMENT OF NATURAL RESOURCES 1 day Yes OH DNR CUMMINS CREEK WS SCS SITE 30 DAM TX L Non-Failure 04/18/2016 Hydrologic/Flooding Spillway Deficiency TX01904-2900 SEVERE SPILLWAY DAMAGE L RE C NR 42 ft 3202.00 33.00 1969 TX01904 POOL BRANCH 29.9169 -96.6341 TCEQ MARTIN FARM POND DAM MD Failure 05/05/2016 Deterioration or Poor Condition Spillway Pipe Failure Accident or Misoperation MD00531-3088 CMP riser plugged with debris triggered flow in emergency. CMP spillway barrel was partially collapsed and deteriorated, downstream embankment eroded away around spillway. Owner removed riser, creating a partial uncontrolled release. No RE 22 ft 25.00 0.00 MD00531 39.5237 -76.4438 MD DAM SAFETY MDE Dam Safety Program BLOOMFIELD DAM NE H Failure 05/19/2016 Unknown Spillway Erosion/Head Cutting NE09728-3035 Headcut developed in vegetated earthen spillway. Headcut advanced until it reached the reservoir and breached the dam. No 0 6 2 0 Railroads 18 RE 33 ft 0.00 0.00 1960 NE09728 TRIB. TO ELK CREEK 42.4599 -96.7315 NDNR 5:00 pm 20 hours No NeDNR AMANDA LAKE DAM TX L Failure 05/27/2016 Hydrologic/Flooding Overtopping TX03774-2910 OVERTOPPING, BREACHED P RE R NR 26 ft 1883.00 0.00 1959 TX03774 TR-WOLF CREEK 30.8889 -94.4003 1996 TCEQ LAKE DOGWOOD DAM TX L Non-Failure 05/30/2016 Hydrologic/Flooding Spillway Deficiency TX00169-2868 SEVERE SPILLWAY DAMAGE P RE R NR 22 ft 664.00 60.00 1965 TX00169 TR-HURRICANE CREEK 31.8441 -95.4949 TCEQ MOSHER BIG LAKE DAM TX S Non-Failure 05/30/2016 Hydrologic/Flooding Overtopping TX02913-2903 OVERTOPPED, DID NOT BREACH EXTENSIVE SLOPE DAMAGE P RE R N 26 ft 342.00 39.00 1942 TX02913 TR-BANDERA CREEK 29.7839 -99.0648 1990 TCEQ TWIN LAKES DAM NO 1 TX L Non-Failure 05/30/2016 Hydrologic/Flooding Overtopping TX02914-2904 OVERTOPPED, DID NOT BREACH EXTENSIVE SLOPE DAMAGE P RE R NR 21 ft 121.00 13.00 1948 TX02914 TR-BANDERA CREEK 29.7787 -99.0667 TCEQ CLINE LAKE DAM OH H Non-Failure 06/09/2016 Deterioration or Poor Condition Spillway Pipe Failure OH03060-3072 Separated joint at the downstream end of the PS. No 0 0 0 0 P RE O Y 47 ft 191.90 8.00 2003 OH03060 TRIBUTARY TO SENECA FORK WILLIS CREEK 39.8861 -81.3214 DEPARTMENT OF NATURAL RESOURCES Yes OH DNR RIAWALKIN POND MD L Non-Failure 06/28/2016 Deterioration or Poor Condition Spillway Pipe Failure Piping MD00213-3078 Five to 9 inches of rain (approx. 200 yr storm) fell. Accelerated piping type erosion around deteriorated CMP spillway barrel. Downstream embankment and road on crest suffered sinkholes/erosion. No S RE R NR 12 ft 91.00 12.00 1950 MD00213 ROCKAWALKING CREEK 38.3678 -75.6749 1996 MD DAM SAFETY MDE Dam Safety Program MCBRIDE LAKE DAM OH S Non-Failure 07/08/2016 Seepage/Internal Erosion Cracking OH02381-3073 Wet area and crack on crest. No 0 0 0 0 S RE O Y 21 ft 24.00 1.00 OH02381 MCBRIDE RUN 38.6578 -83.1778 DEPARTMENT OF NATURAL RESOURCES No OH DNR WILLOW RIVER MN S Failure 07/13/2016 Hydrologic/Flooding Overtopping MN00544-2850 Overtopping of dam due to over 7 inches of rain in less than 24 hours. Right earthen abutment failed. No 0 0 S PG O NR 26 ft 672.00 84.00 1941 MN00544 WILLOW RIVER 46.3236 -92.8392 2002 MNDNR WATERS MNDNR BARREN MILL DAM MD L Failure 07/14/2016 Malfunction of Equipment/Gate Gate/Valve Failure Overtopping MD00121-3076 Heavy rain overnight in watershed combined with inability to operate millrace gates resulted in overtopping failure. No P RE R NR 9 ft 90.00 14.00 MD00121 BARON CREEK 38.4617 -75.735 1979 MD DAM SAFETY MDE Dam Safety Program GUILFORD RESERVOIR MD H Non-Failure 07/21/2016 Manmade Action Accident Or Misoperation MD00106-3083 During preconstruction activities contractor excavated long trench at downstream toe of dam. Soil heave from bottom of excavation created unstable ground conditions and cracking in dam embankment. Reservoir ordered drained. Yes L RE S Y 35 ft 134.00 7.00 1893 MD00106 OFFSTREAM-STONEY RUN 39.345 -76.6167 2006 MD DAM SAFETY MDE Dam Safety Program CRANBERRY BRANCH DAM MD S Non-Failure 09/14/2016 Deterioration or Poor Condition Spillway Pipe Failure Sinkhole MD00090-3081 Ductile iron water supply pipe in earth embankment broke, scouring large hole at downstream toe of dam. Valve upstream of pipe break operated to shut off flow of water. Yes L RE S Y 32 ft 437.00 24.00 1957 MD00090 OFFSTREAM-CRANBERRY BRANCH 39.6 -76.9633 1957 MD DAM SAFETY MDE Dam Safety Program RHODES LAKE DAM NC S Failure 09/25/2016 Hydrologic/Flooding Overtopping NC01145-2969 dam failure week prior to hurricane, breached in 5 places during hurricane Matthew No 0 0 $5 million to $10 million S RE R Y 15 ft 2304.00 0.00 NC01145 BLACK RIVER 35.2258 -78.6528 2011 2 day NCDEQ RIAWALKIN POND MD L Non-Failure 09/29/2016 Hydrologic/Flooding Overtopping MD00213-3079 Dam overtopped after six inch rainfall causing erosion of downstream embankment No S RE R NR 12 ft 91.00 12.00 1950 MD00213 ROCKAWALKING CREEK 38.3678 -75.6749 1996 MD DAM SAFETY MDE Dam Safety Program TRUSSAMS POND DAM DE S Non-Failure 09/30/2016 Hydrologic/Flooding Spillway Erosion/Head Cutting Overtopping DE00019-2861 An extreme rainfall event resulted in excessive flow over the spillway which caused erosion behind and partial failure of the training walls. This also caused embankment erosion on left and right side of the downstream bridge. No 0 0 0 0 Roads $1 to $100,000 S REPG R N 12 ft 665.00 38.00 DE00019 JAMES BRANCH 38.5258 -75.5117 DNREC 18:00 1 day Yes Dam is located at a State Park. DelDOT and State Park staff were on site during the incident. BIG MILLPOND DAM MD L Failure 09/30/2016 Hydrologic/Flooding Unknown MD00080-3080 Dam failed after heavy rainfall event. No details known about failure mechanism. No L RE RFP NR 9 ft 72.00 60.00 1900 MD00080 LITTLE MILL RUN 38.0156 -75.4561 MD DAM SAFETY MDE Dam Safety Program FLATROCK POND DAM VA U Non-Failure 10/08/2016 Hydrologic/Flooding Unknown VA025005-3298 Matthew No 0 P RE R N 14 ft 91.00 9.00 VA025005 FLATROCK BRANCH OF REEDY CREEK - VAHU6 CM18 REEDY CREEK 36.8121 -77.7596 DEPARTMENT OF CONSERVATION AND RECREATION VA DCR LOCH LOMMOND NC H Failure 10/08/2016 Hydrologic/Flooding Overtopping NC02137-2965 breached completely and lake drained Matthew No 0 0 $1 million to $5 million P RE R N 21 ft 109.20 0.00 NC02137 STEWARTS CREEK 35.07 -78.998 NCDENR 1 day NCDEQ LONG VALLEY FARM LAKE DAM NC L Failure 10/08/2016 Hydrologic/Flooding Overtopping NC01126-2966 breached, deep scour holes on crest, downstream slope and toe of dam near principal spillway Matthew No 0 0 $1 million to $5 million S RE RI NR 18 ft 672.00 0.00 NC01126 JUMPING RUN CREEK 35.213 -78.976 2010 NCDENR 1 day NCDEQ SMITH LAKE DAM NC L Failure 10/08/2016 Hydrologic/Flooding Overtopping NC01142-2967 breached with large scour holes on downstream slope and toe of dam Matthew No 0 0 $1 million to $5 million P RE R NR 10 ft 77.00 0.00 NC01142 HARRISON CREEK-OS 34.863 -78.73 1 day NCDEQ ARRAN LAKES DAM NC H Failure 10/08/2016 Hydrologic/Flooding Overtopping NC01144-2968 breached - roadway collapsed Matthew No 0 0 $1 million to $5 million L RE R N 21 ft 144.00 0.00 NC01144 LITTLE BEAVER CREEK 35.029 -78.981 NCDENR 1 day NCDEQ SMITH LAKE DAM NC L Failure 10/08/2016 Hydrologic/Flooding Overtopping NC01148-2970 breached Matthew No 0 0 $1 million to $5 million P RE NR 10 ft 73.00 0.00 NC01148 CAPE FEAR RIVER-TR 35.224 -78.815 1 day NCDEQ MIRROR LAKE DAM NC H Failure 10/08/2016 Hydrologic/Flooding Overtopping NC02151-2971 dam overtopped and partially breached. Mirror Lake Drive severely damaged, downstream face of dam completely damamaged Matthew No 0 0 $1 million to $5 million L RE R Y 12 ft 24.00 0.00 NC02151 HYBART'S BRANCH 35.0544 -78.9222 2002 NCDENR 1 day NCDEQ MT.VERNON ESTATES NC H Failure 10/08/2016 Hydrologic/Flooding Overtopping NC02160-2973 dam overtopped & partially breached, head cut scarp Matthew No 0 0 $1 million to $5 million P RE R N 14 ft 4056.00 0.00 NC02160 KIRKS MILL CREEK 34.853 -78.876 NCDENR 1 day NCDEQ DEVONWOOD LOWER DAM NC H Failure 10/08/2016 Hydrologic/Flooding Overtopping NC04797-2974 dam overtopped and partially breached with roadway down to one lane Matthew No 0 0 $100,000 to $500,000 P RE R Y 25 ft 175.00 0.00 NC04797 PERSIMMON CK-TR 35.075 -78.995 2002 NCDENR 1 day NCDEQ RAYCONDA UPPER DAM NC H Failure 10/08/2016 Hydrologic/Flooding Overtopping NC05621-2975 breached Matthew No 0 0 $1 million to $5 million P RE RP N 19 ft 20.00 0.00 NC05621 LITTLE ROCKFISH CREEK TR 35.0267 -79.0222 2003 NCDENR 1 day NCDEQ MAXWELL MILL POND NC H Failure 10/08/2016 Hydrologic/Flooding Overtopping NC01156-2977 breached; discharge from spillway and possible overtopping caused severe damage to bridge abutments just downstream from dam Matthew No $100,000 to $500,000 P RE R N 14 ft 130.00 0.00 NC01156 MAXWELL CREEK 35.07 -77.7878 NCDENR 1 day NCDEQ BENNETTS BRIDGE RD. DAM NC H Failure 10/08/2016 Hydrologic/Flooding Overtopping NC05977-2978 small dam breach on left side in a controlled fashion, did not cause damage to road Matthew No $500,000 to $1 million X RE F N 6 ft 0.00 NC05977 35.0773 -77.9099 NCDENR 1 day NCDEQ GUY LAKE DAM NC L Failure 10/08/2016 Hydrologic/Flooding Overtopping NC01098-2979 dam breached but did not overtop the road/bridge Matthew No $100,000 to $500,000 P RE R NR 14 ft 72.00 0.00 NC01098 BLACK RIVER 35.488 -78.71 1 day NCDEQ TULL MILLPOND DAM NC H Failure 10/08/2016 Hydrologic/Flooding Overtopping NC00948-2981 dam overtopped at multiple locations and breached between spillways. Matthew No $1 million to $5 million P RE R N 8 ft 518.00 0.00 NC00948 SOUTHWEST CREEK 35.155 -77.734 9999 NCDENR 1 day NCDEQ LAUREL LAKE DAM NC S Failure 10/08/2016 Hydrologic/Flooding Overtopping NC01083-2982 Dam breached and washed out Laurel Lakes Road completely Matthew No $1 million to $5 million P RE R N 12 ft 50.00 0.00 NC01083 RYE SWAMP 35.011 -78.489 1day NCDEQ HOUSE-AUTRY DAM NC H Failure 10/08/2016 Hydrologic/Flooding Overtopping NC05468-2983 breached, dam failure at principal spillway due to overtopping. EM spillway had significant scouring and caused road damage Matthew No $1 million to $5 million P RE R Y 9 ft 307.50 0.00 NC05468 SEVEN MILE SWAMP 35.1869 -78.3762 NCDENR 1 day NCDEQ DURHAMS LAKE DAM NC L Failure 10/08/2016 Hydrologic/Flooding Overtopping NC00943-2984 breached, damaged Durham Lake Road Matthew No $1 million to $5 million P RE R NR 13 ft 112.00 0.00 NC00943 YELLOW MARSH BRANCH 35.281 -78.057 1 day NCDEQ H.F. LEE POWER STATION COOLING LAKE DAM NC H Failure 10/08/2016 Hydrologic/Flooding Overtopping NC00944-2985 breached, plus a large slide on different location Matthew Yes $1 million to $5 million U RE O N 17 ft 5446.00 0.00 NC00944 NEUSE RIV OFF STREAM 35.381 -78.085 NCDENR 1 day NCDEQ SILVER LAKE NC S Failure 10/08/2016 Hydrologic/Flooding Overtopping NC00896-2986 breached Matthew No Other $500,000 to $1 million P REPGCN R N 13 ft 538.00 0.00 NC00896 TOISNOT SWAMP 35.802 -77.949 1 day NCDEQ SCNONAME 14015 SC L Failure 10/08/2016 Hydrologic/Flooding Overtopping SC00731-2987 Heavy rains-as much as 16 inches caused several dams to overtop and fail. Matthew No 0 0 0 0 P RE R N 9 ft 144.00 24.00 1955 SC00731 LAKEWOOD CREEK 33.7333 -80.0917 SCDHEC 1 Day No SC DHEC SCNONAME 16011 SC L Failure 10/08/2016 Hydrologic/Flooding Unknown SC00617-2988 Hurricane Matthew Matthew No 0 0 0 0 Roads P RE R N 15 ft 209.00 22.00 1961 SC00617 TR-STAR FORK BRANCH 34.2533 -79.835 SCDHEC 1 Day No SC DHEC EXP STATION POND DAM SC L Failure 10/08/2016 Hydrologic/Flooding Unknown SC01931-2990 Hurricane Matthew Matthew No 0 0 0 0 S RE I N 18 ft 90.00 11.00 1964 SC01931 TR-BLACK SWAMP CREEK 34.295 -79.73 SCDHEC 1 Day No SC DHEC PEE DEE ST PARK DAM SC L Failure 10/08/2016 Hydrologic/Flooding Unknown SC01963-2991 Hurricane Matthew Matthew Yes 0 0 0 0 S RE R N 10 ft 233.00 53.00 1930 SC01963 TR-LITTLE PEE DEE RIVER 34.3283 -79.2617 SCDHEC 1 Day No SC DHEC FLOWERS POND DAM SC S Failure 10/08/2016 Hydrologic/Flooding Unknown SC01960-2992 Hurricane Matthew Matthew No 0 0 0 0 P RE R Y 11 ft 75.00 12.00 1957 SC01960 TR-BEAR SWAMP 34.3572 -79.2 SCDHEC 1 Day No SC DHEC HAMER POND DAM SC L Failure 10/08/2016 Hydrologic/Flooding Unknown SC01954-2993 Hurricane Matthew Matthew No 0 0 0 0 P RE R N 12 ft 63.00 9.00 1972 SC01954 TR-SWEAT SWAMP 34.5283 -79.435 SCDHEC 1 Day No SC DHEC GADDYS MILLPOND DAM SC S Failure 10/08/2016 Hydrologic/Flooding Unknown SC01958-2994 Hurricane Matthew Matthew No 0 0 0 0 P RE R Y 8 ft 518.00 144.00 1830 SC01958 BEAR SWAMP 34.3933 -79.2383 SCDHEC 1 Day No SC DHEC SALES INTERNATIONAL DAM SC L Failure 10/08/2016 Hydrologic/Flooding Unknown SC01981-2995 Hurricane Matthew Matthew No 0 0 0 0 P RE R N 25 ft 228.00 20.00 1965 SC01981 POLK SWAMP CREEK 34.245 -79.67 SCDHEC 1 Day No SC DHEC PEPSI COLA LAKE POND DAM SC S Failure 10/08/2016 Hydrologic/Flooding Unknown SC01986-2996 Hurricane Matthew Matthew No 0 0 0 0 P RE R N 10 ft 48.00 7.00 1950 SC01986 LONG BRANCH 34.1467 -79.6067 SCDHEC 1 Day No SC DHEC BOWLING POND DAM SC L Failure 10/08/2016 Hydrologic/Flooding Unknown SC01973-2997 Hurricane Matthew Matthew No 0 0 0 0 P RE R N 16 ft 70.00 7.00 1900 SC01973 BINGHAM BRANCH 34.0367 -79.5383 SCDHEC 1 Day No SC DHEC FLOYD POND DAM SC L Failure 10/08/2016 Hydrologic/Flooding Unknown SC01970-2998 Hurricane Matthew Matthew No 0 0 0 0 P RE R N 21 ft 68.00 6.00 1950 SC01970 TR-GREAT PEE DEE RIVER 33.985 -79.5183 SCDHEC 1 Day No SC DHEC BLACKWELL POND DAM SC L Failure 10/08/2016 Hydrologic/Flooding Unknown SC01982-2999 Hurricane Matthew Matthew No 0 0 0 0 P RE R N 16 ft 74.00 9.00 1960 SC01982 TR-MEADOW POND BRANCH 34.045 -79.8183 SCDHEC 1 Day No SC DHEC GRAHAM MILL POND DAM SC S Failure 10/08/2016 Hydrologic/Flooding Unknown SC02012-3000 Hurricane Matthew Matthew No 0 0 0 0 Roads P RE R Y 13 ft 119.00 17.00 1930 SC02012 TREDWELL SWAMP 34.0183 -79.1733 SCDHEC 1 Day No SC DHEC COPELAND POND DAM SC L Failure 10/08/2016 Hydrologic/Flooding Unknown SC01506-3001 Hurricane Matthew Matthew No 0 0 0 0 P RE R N 12 ft 81.00 11.00 1959 SC01506 LYNCHES RIVER OFFSTREAM 34.1683 -80.1583 SCDHEC 1 Day No SC DHEC FLOYD POND DAM SC L Failure 10/08/2016 Hydrologic/Flooding Unknown SC01501-3002 Hurricane Matthew Matthew No 0 0 0 0 P RE D N 15 ft 400.00 22.00 SC01501 TURKEY CREEK 34.3083 -80.2683 SCDHEC 1 Day No SC DHEC LEGETTE MILLPOND DAM SC L Failure 10/08/2016 Hydrologic/Flooding Unknown SC01807-3003 Hurricane Matthew Matthew No 0 0 0 0 P RE R N 9 ft 460.00 92.00 1840 SC01807 REEDY CREEK 34.04 -79.34 SCDHEC 1 Day No SC DHEC STROUD POND DAM SC L Failure 10/08/2016 Hydrologic/Flooding Unknown SC02016-3004 Hurricane Matthew Matthew No 0 0 0 0 P RE R N 7 ft 64.00 14.00 1875 SC02016 TR-CEDAR CREEK 34.1767 -79.13 SCDHEC 1 Day No SC DHEC HAIRE POND DAM SC L Failure 10/08/2016 Hydrologic/Flooding Unknown SC02074-3005 Hurricane Matthew Matthew No 0 0 0 0 P RE R Y 9 ft 90.00 14.00 1949 SC02074 WOLF CREEK 34.7583 -79.79 SCDHEC 1 Day No SC DHEC COVINGTON MILLPOND DAM SC L Failure 10/08/2016 Hydrologic/Flooding Unknown SC00645-3006 Hurricane Matthew Matthew No 0 0 0 0 P RE I N 20 ft 400.00 32.00 1900 SC00645 COTTINGHAM CREEK 34.6083 -79.63 1999 SCDHEC 1 Day No SC DHEC LAKE OAKDALE SC S Non-Failure 10/08/2016 Hydrologic/Flooding Unknown SC00234-3007 Hurricane Matthew - Overtopping of auxilliary spillway with significant erosion. State action was used to stabilize erosion. Matthew No 0 0 0 0 P RE R Y 15 ft 560.00 80.00 1955 SC00234 MIDDLE SWAMP 34.1717 -79.8783 SCDHEC 3 Days No SC DHEC BAXLEY 501 POND DAM SC S Non-Failure 10/08/2016 Hydrologic/Flooding Unknown SC01805-3008 Hurricane Matthew - Overtopping of auxilliary spillway with significant erosion. Matthew No 0 0 0 0 P RE R Y 13 ft 141.00 22.00 1953 SC01805 LITTLE REEDY CREEK 34.1117 -79.335 SCDHEC 3 Days No SC DHEC HEATER RESERVOIR #2 OR S Failure 11/23/2016 Other Spillway Pipe Failure Sliding OR00729-3162 Deformation of a very thin steel conduit that was very poorly encased in concrete. caused the outlet and part of the pipe and the lower 2/3 of the downstream face to move about ten feet as a slide, partly rotational, partly translational. No 0 20 0 0 Roads $1 to $100,000 P RE I NR 28 ft 42.50 4.00 1981 OR00729 CENTER FORK DRIFT CREEK 44.884 -122.709 OWRD OR Dam Safety REDINGTON LAKE DAM MD L Non-Failure 12/19/2016 Deterioration or Poor Condition Animal Activity Sinkhole MD00112-3084 Sinkhole developed at dam crest in line with historic seepage location at downstream toe. Internal erosion assumed to be occuring. Reservoir lowered. Further investigations reveal likely cause of sinkhole is collapsed animal burrow. No F RE F NR 13 ft 348.10 0.00 1940 MD00112 PATUXENT-TR 39.0269 -76.7967 1989 MD DAM SAFETY MDE Dam Safety Program LAKE ABANAKEE DAM NY L Non-Failure 12/20/2016 Hydrologic/Flooding Overtopping NY00152-2860 high flows resulted in overtopping of sheet pile cofferdam. Piling became unstable and tipped downstream L R N 15 ft 6110.00 360.00 1950 NY00152 INDIAN RIVER 43.7983 -74.23 NYS DEC NY DEP EAGLE NEST DAM NM H Non-Failure 12/23/2016 Seismic Unknown NM00351-3030 A magnitude 4.0 seismic event occurred 27 km north of Cimarron, NM. The dam tender responded with inspection but did not activate the EAP. No 0 0 0 0 None None S VA I Y 149 ft 98000.00 2768.00 1918 NM00351 CIMARRON RIVER 36.5318 -105.23 Office of the State Engineer 19:31 1 day Yes Dam owner and NM Dam Safety Bureau Y FOX DAM 2 NE L Failure 01/01/2017 Deterioration or Poor Condition Spillway Pipe Failure NE00390-3550 Likley failed due to conduit corrosion. Sinkhole observed in aerial imagery over conduit before failure. No 0 0 0 0 None $1 to $100,000 24 P RE I NR 11 ft 77.00 9.00 1951 NE00390 TR-MINNECHADUZA CREEK 42.9579 -100.916 NE DNR No NE Dam Safety JOHNSON POND-TODD MN L Failure 01/01/2017 Unknown Slope Stability MN00263-3106 During the eight year inspection the dam was found to have failed at some point. No 0 0 0 0 None Unknown P RE FR NR 12 ft 63.00 0.00 1966 MN00263 TRIBUTARY TO LITTLE ELK RIVER 46.1815 -94.65 MNDNR No FINGER LAKES DAM SOUTH MO H Non-Failure 01/05/2017 Deterioration or Poor Condition Spillway Pipe Failure MO12212-3175 No 0 0 0 None None Owners reduced lake level with siphons until repair was made. S RE R Y 44 ft 585.00 79.00 MO12212 ROCKY FORK CK. 39.0871 -92.3161 DAM AND RESERVOIR SAFETY PROG 2 weeks No MO DNR POTHOLE RESERVOIR ID L Failure 02/07/2017 Hydrologic/Flooding Overtopping Erosion ID00358-3102 Likely cause was overtopping due to rapid melting of as much as 16-18 inches of snow on or about the reported failure date. No 0 Unknown Unknown Unknown Other Unknown S PG P NR 28 ft 600.00 600.00 1941 ID00358 POT HOLE CREEK 42.7083 -115.477 Yes IDWR Y OROVILLE CA H Non-Failure 02/07/2017 Deterioration or Poor Condition Erosion CA00035-3097 Service and emergency spillway failures Yes 188000 Unknown None Unknown S ERRE CHIRS Y 770 ft 3540000.00 15800.00 1968 CA00035 FEATHER RIVER 39.5388 -121.485 DWR, SAFETY OF DAMS 2 days - Evacation order initiated February 12, 2017 and the order lifted February 14, 2017 Yes TWENTY-THREE MILE DAM NV L Failure 02/08/2017 Hydrologic/Flooding Overtopping Reservoir Overfilling NV00110-3099 rain on snow event that cause widespread flooding of a 680 square mile watershed. Flood overwhelmed the reservoir and spillway. Reservoir was also iced over prior to flood event. No 0 Unknown Unknown Unknown Roads, Railroads Unknown 8700 P RE CIP NR 47 ft 8700.00 100.00 NV00110 THOUSAND SPRINGS CREEK 41.53 -114.363 NEVADA DWR Yes SIPPO CREEK RESERVOIR DAM OH H Non-Failure 03/17/2017 Deterioration or Poor Condition Spillway Chute Failure Piping OH02825-3115 Sinkhole and seepage behind the right spillway side wall. L RE R N 19 ft 82.50 4.00 OH02825 SIPPO CREEK 40.805 -81.5083 DEPARTMENT OF NATURAL RESOURCES 6 days Yes OHDNR WINGFOOT LAKE DAM OH S Non-Failure 04/03/2017 Seepage/Internal Erosion Spillway Chute Failure OH00664-3112 Boils downstream of the emergency spillway S RE R Y 14 ft 3429.00 460.00 1916 OH00664 WINGFOOT LAKE OUTLET 41.0183 -81.3736 DEPARTMENT OF NATURAL RESOURCES 1 day Yes OHDNR BONASA BREAKS RANCH DAM WA S Failure 04/13/2017 Hydrologic/Flooding Insufficient Spillway Capacity Overtopping WA00000-3156 An unpermitted dam impounding 36 acre-feet of water suddenly breached, releasing about 29 acre-feet of water. The resulting flood caused extensive damage to public infrastructure, private property, and critical stream habitat. No lives were lost. No 0 0 0 1 Roads, Bridges $10 million to $25 million 29 P RE R N 19 ft 36.00 4.00 1960 WA00000 RATTLESNAKE CREEK - TR 46.0947 -117.189 1 hour Yes LAKE FOREST ESTATES DAM OH S Non-Failure 04/27/2017 Deterioration or Poor Condition Spillway Pipe Failure OH02447-3114 Collapsed principal spillway inlet P RE R Y 21 ft 58.00 2.00 OH02447 TRIBUTARY TO BRANDYWINE CREEK 41.2875 -81.4819 DEPARTMENT OF NATURAL RESOURCES 3 days Yes OHDNR LAKE ELMDALE DAM AR H Non-Failure 04/28/2017 Hydrologic/Flooding Insufficient Spillway Capacity AR00290-3101 Heavy prolong rain surpassed the spillway capacity No Unknown Unknown Unknown Roads Unknown S RE R N 46 ft 2050.00 125.00 1952 AR00290 BUSH CREEK 36.1983 -94.2183 ANRC 2 days Yes Y LAKE ELMDALE DAM AR H Non-Failure 04/29/2017 Hydrologic/Flooding Spillway Erosion/Head Cutting Erosion AR00290-3367 The Lake Elmdale auxiliary spillway 2 experienced significant headcutting and erosion. No 0 0 0 Other S RE R N 46 ft 2050.00 125.00 1952 AR00290 BUSH CREEK 36.1983 -94.2183 ANRC No AR Dam Safety LAKE BENNETT DAM AR L Non-Failure 04/30/2017 Hydrologic/Flooding Insufficient Spillway Capacity Overtopping AR00038-3100 Over 8 inches fell in less than 4 hours. The spillways could not handle the flow and the dam was overtopped. The rock masonry core was left intact, however the earth downstream embankment was eroded. No Unknown Unknown Unknown Roads Unknown S ERRE CFR NR 41 ft 486.00 33.00 1940 AR00038 BLACK FORK CREEK 35.2817 -92.285 ANRC 4 hours Unknown Y BELMEAR LAKE CO S Non-Failure 05/01/2017 Deterioration or Poor Condition Piping Sinkhole CO02059-3168 5-foot diamter sinkhole over outlet works. Owner responded and used a siphon to drain the reservoir before it progressed to failure No P RE IP Y 30 ft 647.00 30.00 1912 CO02059 DISAPPOINTMENT CREEK-TR 37.8136 -108.353 DWR No CO DWR SILVER LAKE DAM MO H Non-Failure 05/01/2017 Seepage/Internal Erosion Excessive/Increased Seepage Erosion MO31851-3174 Elevated seepage rate through dam caused erosion to occur on the face of the dam. No 0 0 0 None None Owners reduced lake level with siphons until repair was made. P RE T Y 80 ft 4900.00 118.00 1981 MO31851 DITCH CREEK 38.1893 -90.7567 DAM AND RESERVOIR SAFETY PROG 2 weeks No MO DNR HAMILTON COUNTY ANGLERS LAKE DAM OH S Non-Failure 05/12/2017 Deterioration or Poor Condition Spillway Pipe Failure Sinkhole OH00263-3109 Sinkhole on the downstream slope over the principal spillway pipe P RE R N 34 ft 124.00 5.00 1950 OH00263 TRIBUTARY TO SHAYLER RUN 39.1111 -84.2311 DEPARTMENT OF NATURAL RESOURCES 2 days Yes OHDNR MCLEAN COUNTY FISH & GAME CLUB LAKE KY H Failure 05/14/2017 Seepage/Internal Erosion Piping KY00470-3107 Unknown 0 0 0 Unknown Unknown Unknown Unknown P RE R NR 19 ft 126.00 19.00 1956 KY00470 LONG FORK CREEK 37.6098 -87.2526 KY DIVISION OF WATER Yes DERRENBACHER POND DAM SC H Non-Failure 06/01/2017 Hydrologic/Flooding Spillway Erosion/Head Cutting SC00600-3128 Following an isolated summer storm that dropped 6+" on the watershed in a short time, the auxiliary spillway suffered major erosion and headcutting. N/A No 0 0 0 0 The State issued an Emergency Order to require the dam owner immediately lower water level under direction of a licensed Professional Engineer, submit a detailed investigation by a licensed Professional Engineer, and submit a Plan of Action for the repair P RE R N 12 ft 109.00 13.00 1965 SC00600 TR-SANDY RUN 33.8146 -80.9929 SC DHEC SC Dam Safety JEFFERSON LAKE CO H Non-Failure 06/22/2017 Seepage/Internal Erosion Excessive/Increased Seepage Erosion CO00363-3169 Owners staff observed a small whirlpool in the reservoir at the reservoir edge adjacent to the dam. Possible contact erosion PFM. Resulted in an emergecy field investigation and a reservoir storage restriction. Yes restrictred water level and observation L RE S Y 33 ft 3417.00 126.00 1951 CO00363 JEFFERSON CREEK 39.4506 -105.863 DWR 14:20 2 days Yes CO DWR LAKE WHITE DAM OH H Non-Failure 06/22/2017 Seepage/Internal Erosion Piping OH00446-3110 Boils discovered downstream of the dam S RE R Y 39 ft 7633.00 400.00 1935 OH00446 PEE PEE CREEK 39.1061 -83.0092 DEPARTMENT OF NATURAL RESOURCES 6 months Yes OHDNR HOOSAC SCHOOL DAM NY S Non-Failure 07/01/2017 Hydrologic/Flooding Overtopping Erosion NY01360-3165 Short, Intense rainfall event caused overtopping of dam and erosion of downstream slope No P RE R Y 25 ft 103.00 10.00 1950 NY01360 PINE VALLEY BROOK 42.8557 -73.3452 NYS DEC 1 week No NY DEC BRISTOL HEAD #1 CO L Non-Failure 07/04/2017 Deterioration or Poor Condition Piping Sinkhole CO00984-3170 Small seep pond below Santa Maria Reservoir with a relatively large outlet conduit. Conduit failed just behind the upstream valve and drained most of the reservoir through the conduit uncontrollably. No Roads work with owner to remove valve and allow reservoir to drain full and stream to run through the conduit until such time as the outlet works can be removed and replaced P RE I NR 15 ft 200.00 16.00 1921 CO00984 SEEPAGE CREEK 37.75 -107.04 DWR No CO DWR SILVER LAKE DAM - MIDDLETOWN DE H Non-Failure 07/06/2017 Deterioration or Poor Condition Gate/Valve Failure Insufficient Spillway Capacity DE00051-3104 A pop-up storm caused the road to nearly overtop and gates in the left spillway were opened. The gates could not be closed due to deflection and breakage and the pond continued to lower. No Roads $500,000 to $1 million S PGRE R Y 18 ft 591.00 39.00 1945 DE00051 DEEP CREEK 39.438 -75.6934 DNREC Yes DelDOT and DNREC Dam Safety Program Y MILL POND DAM MD Failure 07/07/2017 Hydrologic/Flooding Unknown MD00572-3077 4.5 inches of rain in three hours caused failure of dam (unknown if overtopping or piping). Dam had previsouly failed and been repaired without proper engineering or permits. No RE 10 ft 25.00 0.00 MD00572 38.3193 -76.5177 MD DAM SAFETY MDE Dam Safety Program ALBERTA PARK CO H Non-Failure 07/18/2017 Manmade Action Other CO00762-3171 While drilling in the embankment with hollow stem augers an apparent connection was made with a pervious seam and elevated pressures associated with the drilling process caused a surge of muddy seepage and an increase in volume of seepage from a know exit point. Yes Drill was stopped, the hole was grouted and the situation returned to "normal". Reservoir was lowered and an emergency seepage collection system and stability butress were constructed. S RE FR Y 32 ft 812.00 39.00 1953 CO00762 PASS CREEK-TR 37.4703 -106.766 DWR 2 days Yes CO DWR QUEEN CO S Non-Failure 07/20/2017 Seepage/Internal Erosion Excessive/Increased Seepage Erosion CO02026-3172 Owner observed excessive seepage from outlet works headwall. Lowered reservoir and found 2-ft diameter piping hole in embankment. Owner backfilled hole and called an engineer who reported the incident to a dam safety engineer. reservoir restriction ensued No once regulators notified a storage restriction was implemented P RE FIR Y 25 ft 32690.00 1930.00 1896 CO02026 ARKANSAS RIVER-OS 38.2717 -102.636 DWR Yes CO DWR WHEATON BRANCH STORM WATER MANAGEMENT MD H Non-Failure 07/28/2017 Hydrologic/Flooding Insufficient Spillway Capacity MD0012-3159 Yes Pool level subsided L RE C Y 27 ft 196.00 3.00 1979 MD00127 SLIGO CREEK-TR 39.0247 -77.0383 1990 MD DAM SAFETY MD Dam Safety WILDCAT DAM TX H Failure 08/01/2017 Unknown Unknown TX00990-3285 BREACHED P RE PR Y 30 ft 192.00 4.00 1951 TX00990 BEAVER CREEK 30.9082 -98.3887 TCEQ TCEQ NIELSEN DAM ID L Failure 08/04/2017 Hydrologic/Flooding Overtopping Erosion ID06055-3103 0 Unknown Unknown Unknown Roads Unknown RE 0 ft 0.00 0.00 0 ID06055 0 0 Yes IDWR Y COULBOURN MILL DAM (SOUTH DIVISION STREET) MD H Non-Failure 08/12/2017 Hydrologic/Flooding Insufficient Spillway Capacity MD0019-3160 Heavy rain in short time Yes L RE RI Y 12 ft 70.00 13.00 1947 MD00198 TONYTANK CREEK 38.3308 -75.5982 2006 MD DAM SAFETY MD Dam Safety MORRIS MILL POND (SOUTH DIVISION STREET) MD H Non-Failure 08/12/2017 Hydrologic/Flooding Insufficient Spillway Capacity Erosion MD0019-3161 Heavy rain, DS embankment erosion Yes Pool level subsided L RE RI Y 12 ft 191.00 11.00 1947 MD00199 SLAB BRIDGE CREEK 38.326 -75.6024 2018 MD DAM SAFETY MD Dam Safety WILLOW CREEK CO H Non-Failure 08/19/2017 Manmade Action Other CO01036-3173 During construction the downstream dewatering pumps quit due to a generator malfunction. Phreatic surface rose and a crack appeared in a construction cut slope on the downstream face. Yes Quickly installed a temporary buttress, got pumps running and initiated a more diligent monitoring plan for the pumps, generators and slopes. S RE R Y 100 ft 36900.00 1011.00 1966 CO01036 WILLOW CREEK 40.7917 -106.947 DWR Yes LAKE DOWNS DAM TX H Non-Failure 08/29/2017 Hydrologic/Flooding Spillway Deficiency TX00038-2866 SPILLWAY DAMAGE Harvey P RE R N 26 ft 65.00 3.00 1963 TX00038 TR-BIG SANDY CREEK 30.6944 -94.74 1983 TCEQ TX CEQ OAK FOREST LAKE DAM TX S Non-Failure 08/29/2017 Seepage/Internal Erosion Piping TX04450-2916 INTERNAL EROSION Harvey P RE R N 30 ft 192.00 11.00 1974 TX04450 TR-CAMPBELLS CREEK 30.776 -96.4889 TCEQ TX DEQ DOUBLE A LAKE 1 DAM TX S Non-Failure 08/29/2017 Hydrologic/Flooding Overtopping TX04856-2925 OVERTOPPED, DID NOT BREACH Harvey P RE R NR 15 ft 164.00 11.00 1942 TX04856 TR-BIG SANDY CREEK 30.6965 -94.7329 TCEQ TX DEQ ARMADILLO DRIVE LAKE DAM TX S Non-Failure 08/29/2017 Hydrologic/Flooding Overtopping Animal Activity TX07087-2932 OVERTOPPED, BEAVER HOLES. DID NOT BREACH Harvey P RE N 16 ft 47.00 0.00 1800 TX07087 30.7896 -95.5282 TCEQ TX DEQ SPRING LAKE DAM TX H Non-Failure 08/29/2017 Hydrologic/Flooding Unknown TX00124-3134 SPILLWAY DAMAGE Harvey P RE R Y 23 ft 255.00 14.00 1952 TX00124 TR-CANEY CREEK 30.4049 -95.3824 TCEQ TX CEQ SUNSET LAKE DAM TX S Non-Failure 08/29/2017 Hydrologic/Flooding Unknown TX02955-3135 SPILLWAY DAMAGE Harvey P RE R Y 25 ft 960.00 45.00 1951 TX02955 MCDONALD CREEK 30.6464 -95.5798 2005 TCEQ TX CEQ ELECTRO LAKE DAM TX S Failure 08/29/2017 Hydrologic/Flooding Unknown TX03762-3137 Harvey 0 P RE R Y 12 ft 50.00 9.00 1927 TX03762 MAGNUS BRANCH 30.7266 -94.448 TCEQ TX CEQ LAKE IVANHOE DAM TX S Non-Failure 08/29/2017 Seepage/Internal Erosion Piping TX04492-3138 PIPING. DID NOT BREACH. DRAINED LAKE Harvey P RE R Y 19 ft 218.00 10.00 1958 TX04492 TR-MAGNUS BRANCH 30.6855 -94.3998 TCEQ TX CEQ HEARN DAM TX S Failure 08/29/2017 Hydrologic/Flooding Unknown TX09407-3142 Harvey 0 P RE R Y 17 ft 68.00 0.00 TX09407 MAGNUS BRANCH 30.7407 -94.4424 TCEQ TX CEQ LAKE MARK DAM TX L Non-Failure 08/29/2017 Hydrologic/Flooding Sinkhole TX00037-3143 HOLE IN DAM OVER PIPE Harvey P RE R NR 23 ft 290.00 10.00 1964 TX00037 TR-WEST FORK DOUBLE BRANCH 30.6749 -94.7424 TCEQ TX CEQ CUMMINS CREEK WS SCS SITE 6 DAM TX L Non-Failure 08/29/2017 Hydrologic/Flooding Spillway Deficiency TX01883-3145 SPILLWAY DAMAGE Harvey L RE C NR 26 ft 1636.00 23.00 1958 TX01883 FLAT CREEK 30.1166 -96.7433 TCEQ TX CEQ CUMMINS CREEK WS SCS SITE 5 DAM TX L Non-Failure 08/29/2017 Hydrologic/Flooding Spillway Deficiency TX01889-3146 SPILLWAY DAMAGE Harvey L RE C Y 25 ft 3676.00 54.00 1959 TX01889 TURKEY CREEK 30.0989 -96.7636 TCEQ TX CEQ FOREST LAKE DAM TX S Failure 08/29/2017 Hydrologic/Flooding Unknown TX03770-3147 Harvey 0 P RE R Y 16 ft 148.60 10.00 1940 TX03770 TR-TURKEY CREEK 30.7871 -94.4087 1989 TCEQ TX CEQ LAKE JEAN DAM TX S Non-Failure 08/29/2017 Hydrologic/Flooding Unknown TX09386-3150 SEVERE SPILLWAY DAMAGE Harvey P RE R NR 22 ft 45.00 5.00 1971 TX09386 TR-MILLER CREEK 30.0009 -96.9606 TX CEQ ARMENDAIZ LEVEE TX L Non-Failure 08/29/2017 Hydrologic/Flooding Sliding TX01818-3151 SLIDES Harvey P RE I NR 7 ft 1330.00 0.00 1960 TX01818 OFF CH-NORTH FLOODWAY 26.3531 -97.4907 TCEQ TX CEQ CLIFTY CREEK LAKE DAM TX L Non-Failure 08/29/2017 Hydrologic/Flooding Spillway Erosion/Head Cutting TX01858-3152 EMERGENCY SPILLWAY WASHED OUT Harvey P RE P NR 25 ft 520.00 37.00 1962 TX01858 CLIFTY CREEK 30.4391 -96.2221 TCEQ TX CEQ CUMMINS CREEK WS SCS SITE 17 DAM TX L Non-Failure 08/29/2017 Hydrologic/Flooding Unknown TX01880-3153 SPILLWAY DAMAGE Harvey L RE C NR 38 ft 950.00 16.00 1960 TX01880 TR-CUMMINS CREEK 30.014 -96.6866 TCEQ TX CEQ CUMMINS CREEK WS SCS SITE 30 DAM TX L Non-Failure 08/29/2017 Hydrologic/Flooding Unknown TX01904-3154 ADDITIONAL SPILLWAY DAMAGE Harvey L RE C NR 42 ft 3202.00 33.00 1969 TX01904 POOL BRANCH 29.9169 -96.6341 TCEQ TX CEQ SMITH LAKE DAM TX S Failure 08/31/2017 Hydrologic/Flooding Unknown TX05269-2926 FAILURE OF DAM Harvey P RE N 16 ft 70.00 55.00 1950 TX05269 TR-LITTLE COW CREEK 31.0061 -93.708 TCEQ TX DEQ LAKE FOREST DAM TX L Non-Failure 08/31/2017 Hydrologic/Flooding Sinkhole Settlement TX02980-3136 HOLES/SETTLEMENT OF DAM Harvey P RE R NR 23 ft 83.00 15.00 1969 TX02980 TR-HARMON CREEK 30.8569 -95.4225 TCEQ TX CEQ LAKE NANCY DAM NY L Non-Failure 09/06/2017 Seepage/Internal Erosion Excessive/Increased Seepage Piping NY01065-3164 Increased seepage from earth (possibly formerly timber crib) dam. Whirlpool in reservoir. Reservoir was lowered and seepage was sealed with grouting program No L RE R NR 17 ft 1093.00 62.00 1977 NY01065 LADMAN CREEK 43.1141 -74.0097 NYS DEC 1 week No NY DEC PUTNAM LAKE DAM NY H Non-Failure 09/08/2017 Deterioration or Poor Condition Erosion Spillway Pipe Failure NY00090-3167 Galvanized metal pipe that comprised downstream end of LLO was in a severely deteriorated condition. When LLO was activated, seepage out of the pipe eroded the downstream slope of the embankment. Area was excavated and a new pipe was installed downstream of the gate chamber Embankment was backfilled. L RE PR Y 24 ft 2510.00 232.00 1931 NY00090 BOG BROOK 41.4575 -73.5433 NYS DEC 2 weeks No NY DEC EDNA YON DAM SC H Non-Failure 09/12/2017 Hydrologic/Flooding Insufficient Spillway Capacity Accident or Misoperation Other SC00364-3127 Owners had filled in primary spillway due to leakage at some point historically so that auxiliary spillway is only avenue for flow. Then owners constructed a road across auxiliary spillway with undersized culvert pipes. Permits/approval from the State were not obtained for any of this work. During Hurricane Irma, the road bed washed out causing a sudden, uncontrolled release. Hurricane Irma No 0 0 0 0 The State issued an Emergency Order to require the dam owner immediately lower water level under direction of a licensed Professional Engineer, submit a detailed investigation by a licensed Professional Engineer, and submit a Plan of Action for the repair P RE R N 17 ft 316.00 40.00 1962 SC00364 HOLLOW CREEK 33.6301 -81.2444 SC DHEC SC Dam Safety WRIGHT S DAM FL S Failure 09/13/2017 Hydrologic/Flooding Unknown FL00154-2847 P RE OP N 25 ft 874.00 0.00 1973 FL00154 PETERS CREEK 30.02 -81.75 FL DEP WALKER DAM FL L Failure 09/13/2017 Hydrologic/Flooding Unknown FL00147-2848 P RE PR N 22 ft 850.00 0.00 1965 FL00147 PIGEON CREEK 30.77 -81.97 BRIGHTON MD H Non-Failure 09/28/2017 Manmade Action Accident Or Misoperation MD00005-3157 Excessive concrete removal from spillway slab during repairs resulted in potential instability Yes Structural Analysis interim stability, lower pool L CBER HS Y 82 ft 19560.00 800.00 1943 MD00005 PATUXENT RIVER 39.1934 -77.0055 MD DAM SAFETY MD Dam Safety WHITE TURKEY LAKE DAM OH H Non-Failure 10/10/2017 Deterioration or Poor Condition Spillway Pipe Failure Sinkhole OH00025-3108 Sinkhole on the downstream toe P RE R Y 42 ft 183.50 10.00 1968 OH00025 TRIBUTARY TO CROOKED CREEK 39.1961 -82.9897 DEPARTMENT OF NATURAL RESOURCES 1 week Yes OHDNR LITTLE DEER CREEK SITE 2A (MCKNIGHT/RUTLEDGE) MD S Non-Failure 10/24/2017 Hydrologic/Flooding Animal Activity Debris Clogging MD0003-3158 Beavers plugged spillway structure Yes Blockage removed same day P RE C Y 44 ft 523.00 5.00 1962 MD00035 LITTLE DEER CREEK-TR 39.6404 -76.5275 1962 MD DAM SAFETY MD Dam Safety DARTY STOWE LAKE DAM OH S Non-Failure 11/14/2017 Deterioration or Poor Condition Spillway Pipe Failure Sinkhole OH02227-3113 Sinkhole on the downstream slope over the principal spillway pipe P RE R Y 38 ft 78.10 4.00 1987 OH02227 TRIBUTARY TO OPOSSUM RUN 39.9056 -81.4292 DEPARTMENT OF NATURAL RESOURCES Yes OHDNR LAKE QUINN PA H Non-Failure 11/23/2017 Hydrologic/Flooding Overtopping PA00145-3209 CONSTRUCTION COFFERDAM OVERTOPPED AND FAILED. Yes 0 0 0 0 Roads Unknown EARLY WARNING OF EAP ACTIVATED 421 P MSREST R Y 12 ft 1244.00 118.00 1946 PA00145 TR MIDDLE CREEK 41.5081 -75.4261 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 11:00:00 PM 2-3 DAYS PA Dam Safety INTREPID POTASH SOUTH PERIMETER DAM NM S Non-Failure 12/31/2017 Seepage/Internal Erosion Piping Erosion NM00698-0396 Significant increase in seepage up to 1,500 gpm from one location No 0 0 0 None $500,000 to $1 million Notified State official and the on-call engineer right away. Started pumping the seepage collection pond, suspended plant operation and mobilized construction equipments to construct additional seepage berms and buttress to the dam embankment. P RE T N 29 ft 70.00 54.00 NM00698 PECOS RIVER-TR 32.4843 -103.792 OFFICE OF THE STATE ENGINEER 8:30 2 days Yes SWIFT RUN LAKE DAM OH H Non-Failure 01/12/2018 Seepage/Internal Erosion Piping Vegetation OH00515-3264 Concentrated seepage on downstream slope Yes 0 0 0 0 The Ohio Dam Safety Program (ODSP) was contacted by the dam owner. They started monitoring the seepage and opened the lake drain. L RE S Y 39 ft 629.00 38.00 1876 OH00515 SWIFT RUN 40.1764 -84.2633 DEPARTMENT OF NATURAL RESOURCES 3 days No OH DNR HIDDEN VALLEY LAKE DAM IN H Non-Failure 01/22/2018 Structural Stability Sliding IN00100-3073 Downstream slide occurred approx. 52 x 29 x 1 foot deep Yes 0 0 0 0 none P RE R Y 135 ft 7750.00 139.00 1973 IN00100 DOUBLELICK RUN 39.1525 -84.8472 IDNR Yes IN DNR Y LAKE QUINN PA H Failure 01/24/2018 Hydrologic/Flooding Reservoir Overfilling Other PA00145-3260 offerdam was overtopped and failure during construction. At the time of the cofferdam failure, the main dam has a significant breach cut through it for construction purposes. Main dam embankment was overtopped as a result of the cofferdam failure and a significant discharge occurred. This discharge into the downstream inundation area was ultimately reduced by a downstream roadway crossing. No 0 0 0 Unknown Unknown $1 to $100,000 Owners reconstructed the cofferdam with a bypass spillway to prevent reoccurance. 400 P MSREST R Y 12 ft 1244.00 118.00 1946 PA00145 TR MIDDLE CREEK 41.5081 -75.4261 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION No PA DEP TUBMILL PA H Non-Failure 01/25/2018 Seepage/Internal Erosion Excessive/Increased Seepage PA00488-3211 LARGE SEEPS AND SEVERAL SMALLER SEEPS ON DOWNSTREAM FACE OF MASONRY DAM. Yes 0 0 0 0 DRAWDOWN OF RESERVOIR, APPROX. 1 FOOT/DAY. REPAIR MEASURES IN PLANNING. L MSPG S Y 40 ft 696.00 41.00 1907 PA00488 TUBMILL CREEK 40.3306 -79.0894 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety CHAPEL LAKE DAM VA H Non-Failure 02/07/2018 Deterioration or Poor Condition Spillway Riser Failure VA059015-3312 Auxiliary (emergency) spillway erosion from heavy rainfall event in greater Lynchburg area on August 2-3, 2018. Dam did not fail. No 0 Lake water was released through the internal pipe in the dam to the downstream and lake level was lowered. The dam didn't break. Fairfax County opened the low level drain and drained the lake to remove the hazard. N 0.00 VA059015 0 0 DEPARTMENT OF CONSERVATION AND RECREATION VA DCR QUEMAHONING PA H Non-Failure 02/16/2018 Hydrologic/Flooding Other PA00740-3201 2 FEET FLOW IN AUXILIARY SPILLWAY TRIGGERED 24 HOUR SURVEILLANCE & VOLUNTARY EVACUATIONS Yes 0 0 NONE None DRAWDOWN GATES OPENED & FOUR SWIFT WATER RESCUE TEAMS SENT TO BENSON BOR0 FOR BACKUP. L RE S Y 100 ft 57400.00 845.00 1912 PA00740 QUEMAHONING CREEK 40.1822 -78.9431 2005 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 12:28:00 PM PA Dam Safety MOUNTAIN VALLEY DAM NO 1 TX H Non-Failure 02/22/2018 Unknown Unknown TX04797-3140 SPILLWAY FAILURE P RE IR Y 18 ft 150.00 15.00 1960 TX04797 VILLAGE CREEK 32.4897 -97.3652 1980 TCEQ TX CEQ SLAUGHTERS LAKE DAM KY S Failure 02/25/2018 Deterioration or Poor Condition Erosion KY00141-3273 Dam breached around principal spillway pipe due to poor condition of structure and excessive erosion. 0 0 0 0 P RE O NR 18 ft 260.00 13.00 1890 KY00141 DEER CREEK 37.4785 -87.4925 KY DIVISION OF WATER Yes KY DNR LUZERNE LAKE DAM KY H Non-Failure 02/26/2018 Structural Stability Slope Stability Sliding KY00158-3274 Dam experienced a slide on the downstream slope due to steep slopes and saturated conditions. 0 0 0 0 L RE R Y 25 ft 937.00 59.00 1940 KY00158 CANEY CREEK 37.2131 -87.196 KY DIVISION OF WATER Yes KY DNR OTTER LAKE DAM KY H Non-Failure 03/01/2018 Structural Stability Slope Stability KY00858-3276 Dam experienced a slide on the downstream slope due to steep slopes and saturated conditions. 0 0 0 0 P RE R Y 28 ft 695.00 26.00 1959 KY00858 OTTER CREEK 37.4066 -87.518 KY DIVISION OF WATER Yes KY DNR SPRINGWOOD LAKE DAM SC H Non-Failure 03/01/2018 Deterioration or Poor Condition Spillway Pipe Failure Piping Sinkhole SC00090-3126 A sinkhole opened in the road on the dam immediately above the 120-inch diameter outlet pipe. Investigation by the Department showed that piping was occurring from the upstream side of the dam into the embankment, and water/sediment was exiting through holes, cracks and joints in the 120-inch diameter outlet pipe. Over time, 2 additional sinkholes opened in the road above the outlet pipe. N/A No 0 0 0 0 The State issued an Emergency Order to require the dam owner immediately lower water level under direction of a licensed Professional Engineer, submit a detailed investigation by a licensed Professional Engineer, and submit a Plan of Action for the repair P RE R Y 19 ft 233.00 32.00 1954 SC00090 LITTLE JACKSON CREEK 34.0748 -80.9526 SC DHEC SC Dam Safety AUGUSTINE PA S Failure 03/05/2018 Hydrologic/Flooding Overtopping Erosion PA01909-3187 OVERTOPPING ERODED 2 TO 3 FEET IN TOP OF EMBANKMENT AND ON DOWNSTREAM SLOPE. No 0 0 OWNER NOW AGREES TO REMOVE DAM & WILL BE ISSUED EMERGENCY PERMIT WITH SPECIFIED BREACH SIZE P RE R N 14 ft 10.00 0.00 PA01909 TR JERSEY RUN 39.9511 -80.1628 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION PA Dam Safety MOCCASIN LOWER CA H Non-Failure 03/22/2018 Other Insufficient Spillway Capacity Reservoir Overfilling Spillway Erosion/Head Cutting CA00122-3257 Blockage of Moccasin Creek Bypass Tunnel caused sudden rise of the reservoir above core wall to nearly the dam crest because of insufficient spillway capacity. More in Remarks. Yes 0 20 1 1 Water/sewer lines $25 million to $50 million Immediate response by dam owner, Division of Safety of Dams, and first responders. L RE HOS Y 60 ft 554.00 29.00 1930 CA00122 MOCCASIN CREEK 37.8123 -120.306 DWR, SAFETY OF DAMS 2 days Yes CA DSOD AUBERRY LUMBER MILL CA H Non-Failure 04/02/2018 Hydrologic/Flooding Insufficient Spillway Capacity Overtopping CA10403-3258 The dam overtopped due to spillway pipes being clogged with overgrown vegetation. Overtopping eroded the downstream slope, which could have potentially led to failure. There is no low-level outlet at this dam. No 0 0 0 0 None None Response hindered as this was an illegal dam previously unknown to the Division of Safety of Dams until days after the event. P RE S N 17 ft 94.00 8.00 0 CA10403 LITTLE SANDY CREEK 37.0676 -119.49 CA DWR 1 day Yes CA DSOD DAUB DAM ND S Non-Failure 04/10/2018 Seepage/Internal Erosion Erosion Piping Excessive/Increased Seepage ND00372-3324 Seepage/piping and erosion resulted in a large hole forming around a concrete manhole structure containing the low-level drawdown valve on the downstream slope of the dam embankment. Yes 0 0 0 Other S RE R Y 79 ft 1346.00 43.00 1971 ND00372 MISSOURI-TR 47.2361 -101.223 1987 NDSWC No CASCADE LAKE DAM MD S Non-Failure 04/16/2018 Seepage/Internal Erosion Excessive/Increased Seepage MD00042-3281 Yes None None None None Other,recreational lake P ER R Y 20 ft 58.00 5.00 1900 MD00042 PATAPSCO RIVER-TR-EAST BRANCH 39.6167 -76.8883 1976 MD DAM SAFETY 6 months No MD DAM SAFETY UPPER SHAKER LAKE DAM OH H Non-Failure 04/18/2018 Seepage/Internal Erosion Piping Spillway Pipe Failure OH00353-3269 Sinkhole next to the spillway found during periodic inspection. No 0 0 0 0 ODSP staff directed the dam owner to lower the water level. Started by pumping and then was able to remove a portion of the spillway riser. Dam currently under design. L RE R Y 30 ft 155.00 11.00 1852 OH00353 DOAN BROOK 41.4831 -81.5606 DEPARTMENT OF NATURAL RESOURCES No ST CLAIR FARM POND MD S Non-Failure 04/18/2018 Deterioration or Poor Condition Spillway Pipe Failure MD00199-3282 No None Unknown Unknown Unknown Roads P RE R Y 18 ft 64.00 8.00 1968 MD00199 CHURCH BRANCH, TR-BUSH CREEK 39.3417 -77.2245 1968 MD DAM SAFETY 1 year No MD DAM SAFETY AJAX-HECTOR MINE POND MN Failure 04/24/2018 Hydrologic/Flooding Animal Activity Debris Clogging Overtopping MN00000-3262 Tributary stream meandered into abandoned mine pit during spring snowmelt causing partially filled mine pit to completely fill and overtop natural earth embankment. Embankment failed, draining pit into the Embarass River and causing damage to utilities and water quality issues on Embarass Lake. No 0 0 0 0 Other $100,000 to $500,000 Property was abandoned by mining company decades ago and is now owned by state (IRRRB). Rebuild of trail over $1,000,000. 100 S OT O NR 55 ft 150.00 9.00 1945 MN00000 OS TRIBUTARY TO THE EMBARRASS RIVER DIVERSION 47.541 -92.3108 MNDNR 1 day Unknown MNDNR CRANBERRY CREEK WI L Failure 04/25/2018 Hydrologic/Flooding Overtopping WI00450-3340 Dam breached overnight at principal spillway structure No 0 0 0 0 Roads L RE R Y 15 ft 300.00 55.00 1973 WI00450 CRANBERRY CREEK 45.5961 -90.4247 WIDNR No WI DNR ELM RIVER NO. 1 ND S Non-Failure 04/25/2018 Hydrologic/Flooding High Reservoir Level ND00041-3321 Spring snowmelt runoff caused flow through the dam's auxiliary spillway. Yes 0 0 0 None L RE C Y 25 ft 5187.60 48.00 1964 ND00041 MIDDLE BRANCH ELM RIVER 47.3098 -97.4647 NDSWC No FIDDLERS COVE DAM SC H Non-Failure 05/01/2018 Deterioration or Poor Condition Spillway Pipe Failure Piping Sinkhole SC02426-3133 An unpermitted repair of a deterioriated primary spillway outlet pipe resulted in piping along the outside of the outlet pipe, and development of a sinkhole along the pipe from the outlet upwards for approximately 20 feet in length and 8 feet wide (near a band joint). The dam owners had conducted an unpermitted and unauthorized "lining" of the deteriorated corrugated metal pipe using substandard methods and materials. N/A No 0 0 0 0 The State issued an Emergency Order to require the dam owner immediately lower water level under direction of a licensed Professional Engineer, submit a detailed investigation by a licensed Professional Engineer, and submit a Plan of Action for the repair P RE R Y 34 ft 715.00 55.00 1988 SC02426 MUD CREEK 34.8867 -83.0442 SC DHEC SC Dam Safety BARTLETT CARRY DAM NY S Non-Failure 05/06/2018 Seepage/Internal Erosion Cracking Excessive/Increased Seepage Sinkhole NY00011-3277 Leakage through the dam through the concrete on the upstream face of the spillway and through the porous core in the abutment wall caused excessive seepage which caused a sink hole. Yes 0 0 0 0 The seepage was repaired using additional cutoffs and relief drains and the sink hole was repaired. P CNOT OR Y 17 ft 70924.00 5066.00 1915 NY00011 SARANAC RIVER 44.2506 -74.2942 NYS DEC 3 days Yes NY Dam Safety SCHOOL SECTION LAKE WI L Failure 05/10/2018 Seepage/Internal Erosion Animal Activity Piping WI01142-3339 Embankment failure No 0 0 0 0 None L PGRE OR N 8 ft 700.00 117.00 1937 WI01142 SCHOOL SECTION LAKE OUTLET 42.9828 -88.5088 1938 WIDNR Unknown WI DNR COTTON LAKE DAM TX L Failure 05/17/2018 Unknown Unknown TX02845-3290 BREACHED P RE S NR 16 ft 96.00 10.00 1970 TX02845 TR-CANEY CREEK 32.5709 -95.9518 TCEQ TCEQ CANTRELL LAKE DAM TX L Failure 05/17/2018 Unknown Unknown TX02805-3291 BREACHED P RE S NR 18 ft 137.00 12.00 1972 TX02805 TR-HORSLEY CREEK 32.4586 -95.6248 TCEQ TCEQ ALLEN LAKE DAM VA U Non-Failure 05/17/2018 Unknown Spillway Erosion/Head Cutting VA029050-3299 Loss of emergency spillway , loss of lake volume. No 0 P RE R N 24 ft 91.50 9.00 VA029050 37.5636 -78.403 DEPARTMENT OF CONSERVATION AND RECREATION VA DCR LAKE HIDDENWOOD DAM SD L Failure 05/18/2018 Hydrologic/Flooding Overtopping SD00750-3253 No 0 Bridges, Roads Unknown post failure site visit by staff from SD Dam Safety and owner staff, owner closed recreation area associated with the dam S RE R NR 27 ft 474.00 27.00 1926 SD00750 TR MISSOURI 0 0 SD DENR No SD DENR CANTERBURY DAM VA H Non-Failure 05/18/2018 Hydrologic/Flooding Overtopping VA087002-3302 overtopping of dam/damage to road No 0 L RE R Y 13 ft 162.00 11.00 VA087002 37.6024 -77.6062 DEPARTMENT OF CONSERVATION AND RECREATION VA DCR BEAVER CREEK DAM VA H Non-Failure 05/21/2018 Hydrologic/Flooding Spillway Chute Failure VA089003-3304 Damage due to excessive rain. Unable to maintain the lower pool level of 18” down from crest of their concrete spillway, and water is again flowing through their damaged concrete spillway. Voids under the concrete spillway and heaved slab sections on th No 0 L RE S Y 71 ft 6603.00 206.00 VA089003 BEAVER CREEK 36.7433 -79.875 DEPARTMENT OF CONSERVATION AND RECREATION VA DCR REEDY MILLPOND DAM VA U Non-Failure 05/21/2018 Hydrologic/Flooding Spillway Erosion/Head Cutting VA003016-3313 water levels breached the dam and damaged the western wingwalls. Dam had high water levels due to recent heavy rains which engaged the primary spillway (right looking downstream) and auxiliary spillway (left looking downstream). Flow in primary spillwa No 0 0.00 VA003016 0 0 DEPARTMENT OF CONSERVATION AND RECREATION VA DCR MOON LAKE DAM SC H Non-Failure 06/01/2018 Deterioration or Poor Condition Spillway Erosion/Head Cutting SC01800-3131 A late spring storm apparently caused severe head cut erosion at the downstream end of the auxiliary spillway. Spillway erosion occurred sometime in the Spring of 2018 - exact date is unknown. County imagery shows the headcuting just starting around 3/8/2018 and Google Earth imagery shows highly progressed headcutting by 6/3/2018. The Department became aware of headcutting in late June 2018 when very little dam crest remained to prevent a breach. N/A No 0 0 0 0 The State issued an Emergency Order to require the dam owner immediately lower water level under direction of a licensed Professional Engineer, submit a detailed investigation by a licensed Professional Engineer, and submit a Plan of Action for the repair P RE PR Y 22 ft 74.00 7.00 1969 SC01800 TR-SOUTH TYGER RIVER 34.9828 -82.2257 SC DHEC SC Dam Safety CLOVER DAM VA S Non-Failure 06/03/2018 Hydrologic/Flooding Overtopping Erosion VA003162-3297 Overtopping of dam, severe erosion of downstream face of dam. No 0 P RE R Y 24 ft 98.00 7.00 VA003162 TR-IVY CREEK 38.0622 -78.5829 DEPARTMENT OF CONSERVATION AND RECREATION VA DCR ECHO LAKE DAM OH S Failure 06/08/2018 Hydrologic/Flooding Overtopping OH00000-3265 The area received 5 inches of rain in less than 6 hours. It appeared that the center of the crest was approximately 1 foot lower than the left and right ends. The original principal spillway was grouted shut and a new spillway was installed between August 2005 and April 2006 based on historical aerial photographs of the dam. The dam had no emergency spillway. No 1 0 0 2 Roads, Railroad $100,000 to $500,000 ODSP did not hear about this dam until after the fact. The dam was not inventoried and therefore not inspected by our program. Staff inspected the breached dam and surveyed the damage downstream. A letter was sent to the owner indicating that if the dam were to be reconstructed that a construction permit from our office would be required. 28.6 P RE R N 22 ft 28.60 2.00 0 OH00000 TRIBUTARY TO CONOTTON CREEK 40.4894 -81.3272 OH DNR 7-8 PM less than 1 day No OH DNR EMPIRE (OUTLET EMBANKMENT) CO H Non-Failure 06/11/2018 Seepage/Internal Erosion Sinkhole Piping CO00009-3263 A toe drain installed in 1974 and it appears the 8 inch clay pipe damaged and has allowed sediment to be carried away over the years forming the sink hole. Yes 0 0 0 None None The sink hole did not appear to be changing so temporary patch was performed. With a permanent repair done in the fall. temporarily placed gravel in hole. Then camera old drain. Then abandoned and repair new drain P RE FIR Y 37 ft 50900.00 2842.00 1905 CO00009 SOUTH PLATTE RIVER-OS 40.2732 -104.189 DWR 6:00 PM Yes CO DNR Y WASHOE LAKE DAM NV H Non-Failure 06/16/2018 Seepage/Internal Erosion Piping NV10472-3248 An earth pipe formed under the masonary structure which released up to 80 cfs during the incident. The pipe was plugged with underwater grout and an upstream filter. Yes 0 0 0 0 Roads Unknown P MSPG IR Y 12 ft 400.00 45.00 NV10472 STEAMBOAT CREEK 39.33 -119.801 NEVADA DWR 8:00 AM 5 Days No NV DWR PATTISON STATE PARK WI S Failure 06/17/2018 Hydrologic/Flooding Debris Clogging Erosion Overtopping WI00127-3334 Left embankment overtopped & failed, significant debris & tree buildup in spillway due to high flows 0 L PGRE R Y 20 ft 340.00 27.00 1931 WI00127 BLACK 46.5356 -92.1208 WIDNR Unknown WI DNR BIG BONE LICK STATE PARK DAM KY L Non-Failure 06/17/2018 Seepage/Internal Erosion Piping KY00307-3275 Dam experienced a piping incident on the downstream slope with large sinkhole formation. Drawdown only partially functional. Suspect failed low level conduit. 0 0 0 0 S RE R Y 70 ft 218.00 9.00 1971 KY00307 BIG BONE CREEK 38.8845 -84.7429 KY DIVISION OF WATER Yes KY DNR CRANBERRY CREEK FLOWAGE WI H Failure 06/17/2018 Hydrologic/Flooding Overtopping WI00457-3330 Complete failure of left embankment and damage to principal concrete spillway with some uplift Yes 0 0 0 Unknown Roads L RE R Y 12 ft 2500.00 346.00 1969 WI00457 CRANBERRY CREEK 46.4524 -91.9517 WIDNR Unknown WI DNR RADIGAN WI L Failure 06/17/2018 Hydrologic/Flooding Overtopping Debris Clogging WI00257-3331 Lack of gate operation likely contributed to increased pressure and pool elevation No 0 0 0 0 L PGRE R N 12 ft 420.00 150.00 1938 WI00257 UPPER TAMARACK RIVER 46.2174 -92.2255 1964 WIDNR Unknown WI DNR LOWER BLUE LAKE CA L Non-Failure 06/26/2018 Seepage/Internal Erosion Excessive/Increased Seepage CA00380-3255 Damp spots on the downstream face along the length of the left embankment, localized small active seep from damp area, and seepage boil located ~10 feet downstream of the toe on left side of the dam. No 0 0 0 0 None None Immediate response by dam owner and Division of Safety of Dams. Spillway stoplogs have been removed and the reservoir restricted. P RE H NR 40 ft 5091.00 198.00 1885 CA00380 BLUE CREEK 38.6088 -119.927 DWR, SAFETY OF DAMS Yes CA DSOD BURTON LAKE DAM OH S Non-Failure 06/28/2018 Seepage/Internal Erosion Piping Spillway Chute Failure OH01611-3266 Cloudy discharge from under spillway reported by downstream neighbor. No 0 0 0 0 ODSP staff made site visits to assist owner with construction of weighted filter berm at the outlet and excavation of partial breach though the emergency spillway since there was no lake drain to lower the water level. A Chief's Order issued to breach the dam. The dam owner fully breached the dam by the end of the year. L RE R Y 9 ft 447.90 18.00 1952 OH01611 TRIBUTARY TO BRIDGE CREEK 41.4303 -81.1861 DEPARTMENT OF NATURAL RESOURCES 6 months No OH DNR GREENBRIER STATE PARK DAM & DIKE MD H Non-Failure 07/20/2018 Hydrologic /Flooding Overtopping MD00118-3279 Yes None None None None Other,recreational lake Unknown S RE R Y 64 ft 734.00 27.00 1965 MD00118 LITTLE BEAVER CREEK-TR 39.5389 -77.6213 1996 MD DAM SAFETY 3 weeks No MD DAM SAFETY MOON LAKE PA H Non-Failure 07/22/2018 Hydrologic/Flooding Overtopping Excessive/Increased Seepage PA01781-3222 EXTREME RAINFALL OVERTOPPED DAM, DAMAGED DOWNSTREAM SLOPE, AND RESULTED IN SEEPAGE BOILS. Yes 0 2 0 0 Roads EAP ACTIVATED AND COMPLETE DRAWDOWN REQUIRED. P CNRE R Y 12 ft 54.00 14.00 PA01781 DEEP CREEK 40.7186 -76.38 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION 5 DAYS PA Dam Safety RISING SUN WASTE WATER LAGOON MD L Non-Failure 07/25/2018 Hydrologic/Flooding Overtopping MD00130-3283 No None None None None Roads L RE NR 10 ft 119.00 8.00 1964 MD00130 OFFSTREAM-STONE RUN 39.7067 -76.08 2012 MD DAM SAFETY 1 year No MD DAM SAFETY SPOTSWOOD DRIVE DAM VA L Non-Failure 08/01/2018 Manmade Action Accident Or Misoperation VA137015-3306 Owner cut notch in dam with Track Hoe to release high water. No 0 P RE R N 35 ft 270.00 5.00 VA137015 38.3785 -77.7805 DEPARTMENT OF CONSERVATION AND RECREATION VA DCR ISOM DAM VA H Non-Failure 08/02/2018 Seepage/Internal Erosion Piping VA035016-3314 Failure due to soil piping and erosion in the center of the dam No 0 N 0.00 VA035016 0 0 DEPARTMENT OF CONSERVATION AND RECREATION VA DCR COLLEGE LAKE DAM VA H Non-Failure 08/03/2018 Hydrologic/Flooding Overtopping VA680002-3310 From overtopping and evacuation event on August 2-3, 2018. Dam did not fail. Yes 0 L RE CR Y 35 ft 710.50 15.00 VA680002 BLACKWATER CREEK - VAHU6 JM10 - BLACKWATER CREEK 37.4016 -79.184 DEPARTMENT OF CONSERVATION AND RECREATION VA DCR LAKE SUMMIT DAM VA Non-Failure 08/03/2018 Hydrologic/Flooding Spillway Erosion/Head Cutting VA680003-3311 Auxiliary (emergency) spillway erosion from heavy rainfall event in greater Lynchburg area on August 2-3, 2018. Dam did not fail. No 0 0.00 VA680003 0 0 VA DCR LAKE MARIAN (WOODRIDGE ROAD) MD L Non-Failure 08/05/2018 Other Slope Stability MD00075-3280 No None None None None Roads P RE R NR 50 ft 113.00 3.00 1973 MD00075 LINGANORE CREEK-TR 39.4172 -77.3268 2003 MD DAM SAFETY 1 year No MD DAM SAFETY GREENE VALLY SECTION 7 DAM VA L Non-Failure 08/19/2018 Deterioration or Poor Condition Spillway Pipe Failure VA079005-3315 Primary spillway pipe failure at base of pipe. 5 foot drop in normal pool No 0 0.00 VA079005 0 0 DEPARTMENT OF CONSERVATION AND RECREATION VA DCR BELLEVILLE WI L Non-Failure 08/20/2018 Hydrologic/Flooding Erosion Excessive/Increased Seepage WI00116-3338 Boils on downstream side of auxiliary spillway due to scour Yes Unknown 8 Unknown Bridges L PGRE R Y 15 ft 260.00 112.00 1860 WI00116 SUGAR 42.8605 -89.5358 1918 WIDNR Unknown WI DNR PRIDE VALLEY LAKE DAM OH L Non-Failure 08/20/2018 Deterioration or Poor Condition Spillway Pipe Failure OH01047-3267 The principal spillway riser failed. No 0 0 0 0 ODSP staff made site visits to assist owner. Owner actually had approved plans to replace the principal spillway prior to incident. Owner had contractor come in and temporarily breach the dam. Replaced the spillway in the summer of 2019. P RE R N 26 ft 56.00 6.00 1957 OH01047 TRIBUTARY TO ARMSTRONG RUN 40.7083 -81.17 DEPARTMENT OF NATURAL RESOURCES 1 week No OH DNR INDIAN RUN PA H Non-Failure 08/23/2018 Seepage/Internal Erosion Slope Stability PA00713-3259 Slope failure occurred on the downstream face near the center of the dam. Area of failure was roughly 25 feet wide by 25 feet long and about 6 feet in depth. No 0 0 0 0 None None Owners lowered the reservior and maintained it at a lower level until the slope was remediated. L RE S Y 40 ft 92.00 5.00 1890 PA00713 INDIAN RUN 40.2406 -75.8181 PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION No PA DEP HILLSBORO WI H Non-Failure 08/28/2018 Hydrologic/Flooding Overtopping WI00320-3329 Earthen embankment overtopped causing extreme scour and erosion next to left wing wall Yes L PGRE R Y 25 ft 430.00 42.00 1854 WI00320 WEST BRANCH BARABOO R. 43.6487 -90.3374 1967 WIDNR 1 day Unknown WI DNR MLSNA WI H Failure 08/28/2018 Hydrologic/Flooding Abutment Failure Erosion WI00403-3332 High flows resulted in breach and failure of auxiliary spillway and abutment Yes 0 Unknown Unknown Unknown Roads, Bridges L RE CD Y 35 ft 257.00 18.00 1956 WI00403 TR KNAPP CREEK 43.7122 -90.7524 WIDNR 1 day Yes WI DNR WEST FORK KICKAPOO 1 WI H Non-Failure 08/28/2018 Hydrologic/Flooding Erosion WI00418-3333 Deep erosional scarp developed along left groin, opposite side of auxiliary spillway Yes 0 Unknown Unknown Unknown Roads, Bridges L RE CR Y 63 ft 2345.00 51.00 1969 WI00418 WEST FORK KICKAPOO 43.6889 -90.7987 2000 WIDNR 1 day Yes WI DNR COON CREEK 29 WI L Failure 08/29/2018 Hydrologic/Flooding Abutment Failure Erosion WI00368-3335 High flows resulted in breach and failure of auxiliary spillway and abutment Yes 0 0 0 0 Bridges, Roads L RE CD Y 34 ft 207.00 5.00 1961 WI00368 COON CREEK 43.7674 -90.8976 WIDNR 1 day Yes WI DNR COON CREEK 23 WI L Failure 08/29/2018 Hydrologic/Flooding Abutment Failure Erosion WI00371-3336 High flows resulted in breach and failure of auxiliary spillway and abutment Yes 0 0 0 0 Bridges, Roads L RE CD N 39 ft 95.50 0.00 1961 WI00371 TR.RULLANDS COULEE CR 43.743 -90.8418 WIDNR 1 day Yes WI DNR COON CREEK 21 WI L Failure 08/29/2018 Hydrologic/Flooding Abutment Failure Erosion WI00373-3337 High flows resulted in breach and failure of auxiliary spillway and abutment Yes 0 0 0 0 Bridges, Roads L RE CD N 46 ft 271.00 2.00 1963 WI00373 TR RULLAND COULEE CREEK 43.7314 -90.8419 WIDNR 1 day Yes WI DNR NORWOOD NY H Non-Failure 09/06/2018 Deterioration or Poor Condition Cracking Excessive/Increased Seepage NY00743-3278 Increased seepage through concrete joints had to be repaired through a grouting program No 0 0 0 0 P CNERPG H Y 24 ft 1736.00 350.00 1928 NY00743 RAQUETTE RIVER 44.7433 -75.0054 NYS DEC 9 months Yes NY Dam Safety DAVIS DAM VA U Non-Failure 09/15/2018 Unknown Unknown VA145088-3307 Spillway experienced considerable erosion, seepage detected No 0 P NR 20 ft 106.40 13.00 VA145088 37.4475 -77.8359 VA DCR LAKEWIND DAM SC S Failure 09/16/2018 Hydrologic/Flooding Piping Spillway Pipe Failure SC00044-3117 Primary spillway riser had been removed prior to Hurricane Florence (without a permit/approval from the State) and pond was drained. Heavy precipitation on the watershed over approximately 72 hours completely filled the impoundment and caused overtopping of the dam. The breach occurred in line with the primary spillway barrel, and breach sides are near vertical, indicating a piping failure that likely occurred after water level had receded from overtopping. Hurricane Florence No 0 0 0 0 State Dam Safety Program performed a full inspection following the breach of this dam. The inspection report will contain a requirement that the Owner hire an engineer and submit either a permit application for repair or removal of the dam. P RE R Y 24 ft 173.00 17.00 1900 SC00044 CREWS BRANCH 34.7336 -80.1717 SC DHEC SC Dam Safety JORDAN POND DAM SC S Failure 09/16/2018 Hydrologic/Flooding Spillway Erosion/Head Cutting SC00622-3118 Heavy rainfall over 72 hours associated with Hurricane Florence caused a major inflow event. Breached at what appears to be auxiliary spillway on embankment near left abutment. Post-breach inspection shows highly-erodible sandy soil and no apparent core in the embankment. Hurricane Florence No 0 0 0 0 State Dam Safety Program performed a full inspection following the breach of this dam. The inspection report will contain a requirement that the Owner hire an engineer and submit either a permit application for repair or removal of the dam. P RE R Y 19 ft 88.00 10.00 1956 SC00622 LITTLE BOGGY SWAMP 34.423 -79.9951 SC DHEC SC Dam Safety MCLAURINS MILLPOND DAM SC S Failure 09/16/2018 Hydrologic/Flooding Debris Clogging Overtopping Erosion SC00637-3119 State Dam Safety personnel visited the dam on 9/17/2018 and found the dam was completely breached and that the primary spillway was partially obstructed with weeds and vegetation. Hurricane Florence No 0 0 0 0 State Dam Safety Program performed a full inspection following the breach of this dam. The inspection report will contain a requirement that the Owner hire an engineer and submit either a permit application for repair or removal of the dam. P RE R Y 11 ft 472.00 76.00 1900 SC00637 NAKED CREEK 34.6754 -79.7581 SC DHEC SC Dam Safety DAVIDS MILLPOND DAM SC S Failure 09/16/2018 Hydrologic/Flooding Insufficient Spillway Capacity Overtopping Erosion SC00638-3120 Simply appears dam overtopped during the heavy rainfall associated with Hurricane Florence and suffered headcut erosion on the downstream slope at location of primary spillway. Auxiliary spillway is a concrete chute but is severely restricted by "orifice" at outlet. Hurricane Florence No 0 0 0 0 Roads State Dam Safety Program performed a full inspection following the breach of this dam. The inspection report will contain a requirement that the Owner hire an engineer and submit either a permit application for repair or removal of the dam. P RE O Y 9 ft 394.00 45.00 1870 SC00638 NAKED CREEK 34.6443 -79.7482 SC DHEC SC Dam Safety COVINGTON MILLPOND DAM SC L Failure 09/16/2018 Hydrologic/Flooding Overtopping Erosion SC00645-3121 Heavy rainfall and flooding contributed to failure. Failure occurred at the mid point of the dam due to overtopping and erosion at an area that had previously been repaired and grass cover had not been permanently established. Hurricane Florence No 0 0 0 0 Roads State Dam Safety Program performed a full inspection following the breach of this dam. The inspection report will contain a requirement that the Owner hire an engineer and submit either a permit application for repair or removal of the dam. P RE IR NR 11 ft 400.00 32.00 1900 SC00645 COTTINGHAM CREEK 34.6077 -79.6314 SC DHEC SC Dam Safety BAXLEY 501 POND DAM SC S Failure 09/16/2018 Hydrologic/Flooding Overtopping Erosion SC01805-3122 Hurricane Florence dropped heavy precipation on the watershed over approximately 72 hours, causing the dam to overtop. Dam was previously heavily impacted from Hurricane Matthew in 2016. Failure location is also where a void from an overturned tree was located, which is suspected as cause of the breach occurring where it did. Hurricane Florence No 0 0 0 0 State Dam Safety Program performed a full inspection following the breach of this dam. The inspection report will contain a requirement that the Owner hire an engineer and submit either a permit application for repair or removal of the dam. P RE R Y 7 ft 141.00 22.00 1953 SC01805 LITTLE REEDY CREEK 34.1114 -79.3352 SC DHEC SC Dam Safety CRAWFORD POND DAM SC L Failure 09/16/2018 Hydrologic/Flooding Overtopping Erosion SC01902-3123 Heavy rainfall and flooding contributed to failure. Failure occurred at the mid point of the dam due to overtopping and erosion. No primary spillway was present for this dam, and no way to lower the water level. The owner observed and confirmed the overtopping. Hurricane Florence No 0 0 0 0 State Dam Safety Program performed a full inspection following the breach of this dam. The inspection report will contain a requirement that the Owner hire an engineer and submit either a permit application for repair or removal of the dam. P RE R NR 16 ft 71.00 8.00 1960 SC01902 HURRICANE BRANCH 34.6639 -80.2922 SC DHEC SC Dam Safety MCMEEKIN POND DAM SC L Failure 09/16/2018 Hydrologic/Flooding Spillway Erosion/Head Cutting Overtopping SC02073-3124 Dam had evidence of overtopping along with a complete breach to the left of the primary spillway. Erosion occured on both sides of primary spillway. Hurricane Florence No 0 0 0 0 Roads State Dam Safety Program performed a full inspection following the breach of this dam. The inspection report will contain a requirement that the Owner hire an engineer and submit either a permit application for repair or removal of the dam. P RE R NR 7 ft 95.00 19.00 1950 SC02073 WOLF CREEK 34.7377 -79.7993 SC DHEC SC Dam Safety MCCOLL POND DAM SC L Failure 09/16/2018 Hydrologic/Flooding Overtopping Erosion SC02311-3125 Dam had evidence of overtopping along with a complete breach in the center. The owner had not been to the dam in a couple of years and did not know for certain the breach occured due to Hurricane Florence, but believes it did. Hurricane Florence No 0 0 0 0 State Dam Safety Program performed a full inspection following the breach of this dam. The inspection report will contain a requirement that the Owner hire an engineer and submit either a permit application for repair or removal of the dam. P RE R NR 14 ft 72.00 10.00 SC02311 TR-LITTLE PEE DEE RIVER 34.4948 -79.4096 SC DHEC SC Dam Safety LAKE DARPO DAM SC L Failure 09/16/2018 Hydrologic/Flooding Piping Spillway Pipe Failure SC00625-3129 Heavy rainfall and flooding contributed to failure. Failure occurred at a 36" horizontal pipe (acting as auxiliary spillway) that had been placed through the dam, near the left abutment. The owners do not believe that the dam was overtopped, but that heavy flow led to erosion/piping around the horizontal pipe. Breach prevented access to a large portion of the dam and the primary spillway structure. Hurricane Florence No 0 0 0 0 State Dam Safety Program performed a full inspection following the breach of this dam. The inspection report will contain a requirement that the Owner hire an engineer and submit either a permit application for repair or removal of the dam. L RE R NR 15 ft 146.00 20.00 1957 SC00625 BUCKHOLTZ CREEK 34.4573 -79.8804 SC DHEC SC Dam Safety SPRING LAKE DAM SC L Failure 09/16/2018 Hydrologic/Flooding Overtopping Erosion SC00626-3130 Heavy rainfall and flooding led to overtopping and failure of a low area near the documented auxiliary spillway (located at the left abutment). Both primary spillways appear to be intact. The breach prevented access to the remaining portion of the auxiliary spillway and left abutment. Hurricane Florence No 0 0 0 0 State Dam Safety Program performed a full inspection following the breach of this dam. The inspection report will contain a requirement that the Owner hire an engineer and submit either a permit application for repair or removal of the dam. P RE R NR 16 ft 145.00 16.00 1958 SC00626 BUCKHOLTZ CREEK 34.4582 -79.8616 SC DHEC SC Dam Safety CHATHAM LAKE DAM SC S Non-Failure 09/16/2018 Hydrologic/Flooding Overtopping Erosion Spillway Erosion/Head Cutting SC01869-3132 Heavy rainfall from Hurricane Florence caused dam to overtop. Primary spillway was clogged with debris prior to storm and low-level outlet was inoperable (valve stem missing). Downstream slope failure from erosion at toe exposed core of dam. Headcutting erosion at auxiliary spillway left an escarpment. Hurricane Florence No 0 0 0 0 Roads The State issued an Emergency Order to require the dam owner immediately lower water level under direction of a licensed Professional Engineer, submit a detailed investigation by a licensed Professional Engineer, and submit a Plan of Action for the repair P RE R Y 17 ft 53.00 7.00 1978 SC01869 TR-THOMPSON CREEK 34.6732 -79.9104 SC DHEC SC Dam Safety MORRIS MILL POND (SOUTH DIVISION STREET) MD H Non-Failure 10/01/2018 Hydrologic/Flooding Overtopping Debris Clogging MD00131-3284 Hurricane Michael No None None None None Roads L RE RI Y 12 ft 191.00 11.00 1947 MD00131 SLAB BRIDGE CREEK 38.326 -75.6024 2018 MD DAM SAFETY 1 year No MD DAM SAFETY LAWLER DAM TX Non-Failure 10/01/2018 Unknown Overtopping TX09730-3295 OVERTOPPED, DID NOT FAIL. DOWNSTREAM SLOPE DAMAGE RE 9 ft 20.00 0.00 TX09730 0 0 TCEQ BEDFORD WATER SUPPLY DAM IA S Non-Failure 10/11/2018 Deterioration or Poor Condition Piping Erosion Spillway Pipe Failure IA01052-3245 Piping and loss of significant downstream embankment slope due to deteriorated corrugated metal pipe. No 0 0 0 0 None None L RE S NR 44 ft 598.00 30.00 1969 IA01052 TR-EAST FORK 102 RIVER 40.6822 -94.7127 IOWA DNR IA DNR BEDFORD WATER SUPPLY DAM IA S Non-Failure 10/11/2018 Deterioration or Poor Condition Spillway Pipe Failure Piping IA01052-3360 Piping and loss of significant downstream embankment slope due to deteriorated corrugated metal pipe. L RE S NR 44 ft 598.00 30.00 1969 IA01052 TR-EAST FORK 102 RIVER 40.6822 -94.7127 IOWA DNR IA Dam Safety GOODWIN DAM VA L Non-Failure 10/12/2018 Hydrologic/Flooding Overtopping Erosion VA147005-3308 Downslope earthen embankment erosion due to overtopping. Dam did not fail. No 0 S RE R Y 32 ft 212.25 11.00 VA147005 TR-SANDY RIVER 37.1753 -78.2815 DEPARTMENT OF CONSERVATION AND RECREATION VA DCR GARLAND MILLPOND DAM VA L Non-Failure 10/15/2018 Unknown Spillway Erosion/Head Cutting VA159002-3309 Emergency spillway suffered erosion damage No 0 P RE R Y 16 ft 672.00 56.00 VA159002 MARSHY SWAMP 37.9588 -76.7062 DEPARTMENT OF CONSERVATION AND RECREATION VA DCR EDMUNDS LAKE VA L Non-Failure 10/23/2018 Unknown Spillway Erosion/Head Cutting VA083039-3301 Dam sustained major erosion into noncompetent Rock in Auxiliary Spillway 0 S RE R N 28 ft 358.00 26.00 VA083039 NONE 36.7148 -78.6901 DEPARTMENT OF CONSERVATION AND RECREATION VA DCR PEABODY COAL COMPANY POND DAM OH L Non-Failure 10/25/2018 Deterioration or Poor Condition Spillway Pipe Failure OH00868-3272 During a periodic inspection, ODSP staff discovered that the last 4 sections of the spillway pipe had separated from the rest of the spillway and the downstream slope over the spillway pipe had eroded away. No 0 0 0 0 ODSP staff informed owner. The dam is being monitored and currently under design. S RE R Y 34 ft 215.10 5.00 1967 OH00868 TRIBUTARY TO MILL FORK 40.2289 -81.9467 DEPARTMENT OF NATURAL RESOURCES No OH DNR PRESTONWOOD LAKE DAM TX L Non-Failure 10/29/2018 Unknown Unknown TX04791-3139 SPILLWAY FAILURE, SUBSEQUENTLY BREACHED TO AVOID A FAILURE P RE R NR 18 ft 52.00 0.00 1977 TX04791 TR-VILLAGE CREEK 32.7699 -97.1434 TCEQ TX CEQ CROOKSVILLE RESERVOIR NO. 1 DAM OH H Non-Failure 11/07/2018 Seepage/Internal Erosion Piping Spillway Pipe Failure OH00279-3270 During a periodic inspection, sinkholes in the left end of the downstream slope of the dam were discovered. Ordered the dam owner to drain the lake. Owner is working on permanently breaching the dam. L RE R N 34 ft 96.00 7.00 1934 OH00279 DRY RUN 39.7611 -82.0472 DEPARTMENT OF NATURAL RESOURCES No OH DNR ENGLISH BENCH WATERSHED SITE 9 IA L Non-Failure 11/20/2018 Seepage/Internal Erosion Piping Sliding IA00086-3246 Slide failure and piping at toe No 0 0 0 0 None None L RE PC NR 38 ft 32.00 2.00 1970 IA00086 TR-UPPER IOWA RIVER 43.4418 -91.4662 IOWA DNR IA DNR ENGLISH BENCH WATERSHED SITE 9 IA L Non-Failure 11/20/2018 Structural Stability Piping Slope Stability IA00086-3357 Slide failure and piping at toe L RE PC NR 38 ft 32.00 2.00 1970 IA00086 TR-UPPER IOWA RIVER 43.4418 -91.4662 IOWA DNR IA Dam Safety NORTH RESERVOIR DAM OH H Non-Failure 12/01/2018 Deterioration or Poor Condition Gate/Valve Failure OH00587-3271 Lake drain operation caused the abutment movement and unsafe condition for operator. No 0 0 0 0 ODSP staff made a site visit to inspect the rest of the structure. Dam currently under design. S RE R Y 13 ft 1111.00 166.00 1840 OH00587 TRIBUTARY TO TUSCARAWAS RIVER 41.0056 -81.5508 DEPARTMENT OF NATURAL RESOURCES 1 day No OH DNR CANTERBURY DAM VA H Non-Failure 12/12/2018 Malfunction of Equipment/Gate Accident Or Misoperation Erosion VA087002-3303 Dam experienced internal erosion away from edges and was subsequently excavated tor repair watermain break and later backfilled. No 0 L RE R Y 13 ft 162.00 11.00 VA087002 37.6024 -77.6062 DEPARTMENT OF CONSERVATION AND RECREATION VA DCR ISLAND FISHING LAKE DAM OH S Non-Failure 12/20/2018 Deterioration or Poor Condition Spillway Pipe Failure OH00176-3268 The principal spillway collapse so water could not exit lake. Neighbor reported high pool that was flooding their property. No 0 0 0 0 ODSP staff directed the dam owner to install siphons to lower the water level since there was not lake drain. Owner lowered the water level and has maintained it below the spillway elevation. They plan to replace the spillway pipe by the end of 2019. P RE R Y 12 ft 139.00 20.00 OH00176 TRIBUTARY TO SALMON RUN 39.4472 -84.6883 DEPARTMENT OF NATURAL RESOURCES 1 week No OH DNR CADENHEAD DAM TX Non-Failure 12/28/2018 Seepage/Internal Erosion Piping TX07536-3292 PIPING FAILURE DID NOT BREACH THE DAM RE 21 ft 43.00 0.00 TX07536 0 0 TCEQ TOWSON DAM TX Non-Failure 12/28/2018 Unknown Spillway Deficiency TX09733-3296 SPILLWAY DAMAGE RE 15 ft 42.00 0.00 TX09733 0 0 TCEQ PENDLETON LAKE DAM GA H Non-Failure 12/29/2018 Hydrologic/Flooding Debris Clogging Insufficient Spillway Capacity Spillway Pipe Failure GA05300-3344 Amid rampant rains, riser clogged. Debris was cleared, but CMP pipe failed at downstream elbow. No Unknown Unknown Unknown None Unknown Program required lake lowered 4' below NP and affected area taped off. Diesel pumps were employed. P RE R NR 15 ft 140.00 13.00 1991 GA05300 FLAT CREEK 33.4821 -84.5683 GA-SAFE DAMS PROGRAM Yes GA Safe Dams Program EIGHTMILE LAKE OUTLET DAM WA H Non-Failure 01/01/2019 Deterioration or Poor Condition Spillway Pipe Failure Insufficient Spillway Capacity Reservoir Overfilling WA00228-3248 No failure but EAP implemented for deteriorating 90 year old dam as precaution for high spring runoff. Wildfire burned much of watershed the previous fall and low-level outlet was not working. Located in wilderness area with no winter access or remote monitoring. Yes 0 0 0 0 None None Public alert and meetings. Local and State EM staff engaged. Twice weekly recons by small aircraft/helicopters. Installed remote monitoring, re-shaped and armoroed crest, reapired low level outlet. U ERRE IR Y 22 ft 1610.00 65.00 1933 WA00228 EIGHTMILE CREEK 47.5205 -120.858 WASHINGTON, DEPT OF ECOLOGY 10 Months No WA DOE CARDINAL LAKE DAM GA L Non-Failure 01/01/2019 Deterioration or Poor Condition Spillway Pipe Failure GA00581-3343 Flow through principal spillway displaced outlet end of pipe, creating hole in downstream slope. No Unknown Unknown Unknown Unknown Unknown Road over dam closed and temporary repairs done quickly. Lake drain then opened to keep lake low. P RE R NR 27 ft 380.00 34.00 1959 GA00581 KNOX BRANCH 33.975 -84.13 GA-SAFE DAMS PROGRAM Yes GA Safe Dams Program JORDAN POND DAM NY S Non-Failure 01/01/2019 Seepage/Internal Erosion Excessive/Increased Seepage Piping Settlement NY13562-3163 Increased seepage at the toe and a depression at the crest were observed. No 0 0 0 0 Water levels at the dam as well as a downstream dam were lowered, and the seepage stopped. P CNRE R Y 10 ft 37.00 11.00 1986 NY13562 CLOVE CREEK 41.4511 -73.8672 NYS DEC 4 weeks NY DEC FORT YARGO LAKE STATE PARK DAM GA H Non-Failure 01/01/2019 Hydrologic/Flooding High Reservoir Level GA00604-3350 Emergency spillway activated. No Unknown Unknown Unknown Unknown Unknown Program visited site. Minimal erosion damage was noted. S RE C Y 49 ft 7460.00 263.00 1964 GA00604 MARBURG CREEK 33.9621 -83.7246 GA-SAFE DAMS PROGRAM Unknown GA Safe Dams Program DAGEFORDE DAM NE L Failure 01/01/2019 Deterioration or Poor Condition Spillway Pipe Failure NE08657-3372 Corrosion of CMP Spillway Conduit led to internal erosion. No 0 0 0 0 None $1 to $100,000 27 P RE C NR 20 ft 73.20 7.00 1980 NE08657 TR-LITTLE BLUE RIVER 40.1219 -97.5903 NE DNR No NE Dam Safety WHAYLE REYNOLDS DAM 1 NE L Failure 01/01/2019 Deterioration or Poor Condition Spillway Erosion/Head Cutting High Reservoir Level NE01355-3373 Dam failed through earthen auxiliary spillway. Spillway was poorly maintained. No 0 0 0 0 None $1 to $100,000 213 P RE P NR 16 ft 339.40 35.00 1963 NE01355 W BR TURKEY CREEK 40.5255 -99.8 NE DNR No NE Dam Safety RITTSCHER FARM & RANCH DAM NE L Failure 01/01/2019 Unknown Unknown NE08503-3376 Dam failed along principal spillway alignment. No 0 0 0 0 None $1 to $100,000 50 P RE P NR 13 ft 123.00 8.00 1960 NE08503 TR-CLEARWATER CREEK 42.0682 -98.4091 NE DNR No NE Dam Safety DARKE CO. WILDLIFE AREA POND NO. 5 DAM OH L Non-Failure 01/01/2019 Seepage/Internal Erosion Excessive/Increased Seepage Piping Spillway Pipe Failure OH00574-3377 A small vortex was notice near the principal spillway inlet (slant pipe). There appears to be a defect in the pipe and seepage was traveling along the outside of the pipe from the inlet. There was also a small sinkhole on the downstream slope near the outlet. The water level was lowered and the area around the spillway inlet was sandbagged. Yes 0 S RE R Y 26 ft 54.50 4.00 1966 OH00574 TRIBUTARY TO BOLTON RUN 40.1206 -84.5214 DEPARTMENT OF NATURAL RESOURCES No OH Dam Safety ALVIN SD L Non-Failure 01/01/2019 Hydrologic/Flooding Spillway Chute Failure Slope Stability SD00029-3414 Multiple high flow events in 2019 damaged primary spillway with portion of spillway wall collapsing and caused embankment sloughing adjacent to primary spillway and stilling basin. No 0 unknown unknown unknown Roads Owner did some stabilization work on sloughing and hired an engineering consultant to do additional analysis S RE CR NR 36 ft 2150.00 46.00 1954 SD00029 NINE MILE CREEK 43.44 -96.6083 1994 DENR SD Dam Safety HADDOCK DAM TX Non-Failure 01/02/2019 Unknown Spillway Deficiency TX07538-3293 SPILLWAY FAILURE RE 12 ft 53.00 0.00 TX07538 0 0 TCEQ ROGERS LAKE DAM TX L Failure 01/03/2019 Unknown Unknown TX02356-3390 0 P RE S NR 20 ft 216.00 18.00 1962 TX02356 TR-SYPERT BRANCH 30.9065 -97.2317 TCEQ TX Dam Safety UPPER BRUSHY CREEK WS SCS SITE 25 DAM TX S Non-Failure 01/04/2019 Structural Stability Sliding TX01339-3286 SLIDE ON DOWNSTREAM SLOPE L RE CP N 35 ft 1728.00 36.00 1975 TX01339 LITTLE MUSTANG CREEK 30.5774 -97.4827 TCEQ TCEQ WEBB/STRICKEN DEER RESERVE DAM VA H Non-Failure 01/15/2019 Deterioration or Poor Condition Spillway Pipe Failure VA035017-3316 Pipe failure, significant erosion upstream crest of dam No 0 N 0.00 VA035017 0 0 DEPARTMENT OF CONSERVATION AND RECREATION VA DCR OHIO POWER COMPANY POND MB-144 POND OH L Non-Failure 01/28/2019 Structural Stability Abutment Failure Landslide OH01042-3379 Slide in the right downstream abutment. Slide not affecting dam. No 0 P RE T Y 30 ft 72.30 5.00 1968 OH01042 TRIBUTARY TO MANS FORK 39.7167 -81.7725 DEPARTMENT OF NATURAL RESOURCES No OH Dam Safety FISHER LAKE DAM OH S Non-Failure 01/28/2019 Deterioration or Poor Condition Spillway Riser Failure OH01649-3380 Principal spillway CMP riser failed due to corrosion. Water level lowered. No 0 P RE R N 22 ft 79.00 6.00 1960 OH01649 TRIBUTARY TO CAESAR CREEK 39.6167 -83.8867 DEPARTMENT OF NATURAL RESOURCES No OH Dam Safety SCHMIDT AG IRRIG DAM NE L Failure 02/01/2019 Seepage/Internal Erosion Piping NE05530-3374 Piping along spillway conduit after first fill. Poor compaction and dispersive soil suspected. 0 0 0 0 None $1 to $100,000 49 P RE I NR 21 ft 260.00 11.00 2018 NE05530 TR-CUB CREEK 40.1993 -97.098 NE DNR No NE Dam Safety TYCOON LAKE DAM OH H Non-Failure 02/20/2019 Structural Stability Slope Stability OH00283-3378 Slide on the downstream slope. The slide was later repaired. Yes 0 S RE R Y 29 ft 4078.00 176.00 1961 OH00283 TRIBUTARY TO RACCOON CREEK 38.9222 -82.3533 DEPARTMENT OF NATURAL RESOURCES No OH Dam Safety LAKE EVANS DAM GA U Non-Failure 02/22/2019 Deterioration or Poor Condition Erosion GA07150-3342 Program took calls stemming from our 2018 visit to the seriously-eroded dam. No Unknown Unknown Unknown Unknown Unknown Local official asked Program for advice. P RE R NR 25 ft 25.00 2.00 GA07150 UNNAMED 33.5656 -84.4239 GA-SAFE DAMS PROGRAM Yes GA Safe Dams Program ETOWAH RIVER SUBWATERSHED STRUCTURE #1 GA H Non-Failure 02/22/2019 Hydrologic/Flooding High Reservoir Level GA06128-3349 Program took call that the lake had risen 25 feet and about to overtop, but staff found no problem. No Unknown Unknown Unknown Unknown Unknown Program visited site. S RE R Y 48 ft 1691.00 46.00 1969 GA06128 BREWTON CREEK 34.3153 -84.1964 GA-SAFE DAMS PROGRAM Unknown GA Safe Dams Program LAKE POWHATAN DAM VA H Non-Failure 02/23/2019 Deterioration or Poor Condition Gate/Valve Failure Spillway Pipe Failure VA015506-3318 minor erosion on the upper face of the dam, not the crest, due to a whirlpool created due to a joint failure with the inlet pipe between the bottom drain valve and the dam on the lake side of the dam. The owners opened the valve to perform maintenance pr 0 0.00 VA015506 0 0 DEPARTMENT OF CONSERVATION AND RECREATION VA DCR GRIGGS LAKE DAM IN H Non-Failure 02/25/2019 Deterioration or Poor Condition Spillway Pipe Failure Sinkhole IN00722-3327 Sinkhole is located directly over the CMP principal spillway pipe, bout 1/3 of the way down the back slope of the dam. It is approximately 8 feet in diameter and 8 feet deep to the exposed pipe. Owner immediately started pumping the lake down with a 6 inch pump P RE R NR 22 ft 82.00 6.00 1964 IN00722 UNNAMED TRIBUTARY THOMPSON DITCH 39.4406 -87.3558 IDNR IDNR UPPER BEAVER SUBWATERSHED SITE M-1 IA L Non-Failure 03/01/2019 Deterioration or Poor Condition Spillway Erosion/Head Cutting Accident or Misoperation IA00717-3358 Clogged spillway inlet and high auxiliary spillway flows resulted in significant erosion of the auxiliary spillway channel. L RE PC NR 60 ft 194.00 8.00 1967 IA00717 TR-BEAVER CREEK 42.0612 -95.8452 IOWA DNR IA Dam Safety DOBIAS DAM NE L Failure 03/01/2019 Hydrologic/Flooding Overtopping NE01792-3369 Rain on snow resulted in flood that overtopped the dam. Winter Storm Ulmer No 0 0 0 0 None $1 to $100,000 86 P RE P NR 43 ft 86.00 6.00 1981 NE01792 TR-VERDIGRE CREEK 42.62 -98.094 NE DNR No NE Dam Safety VONASEK DAM 1835 NE L Failure 03/01/2019 Hydrologic/Flooding Overtopping NE01835-3370 Rain on snow resulted in flood that overtopped the dam. Winter Storm Ulmer No 0 0 0 0 Roads $100,000 to $500,000 109 L RE CO NR 20 ft 109.90 2.00 1958 NE01835 TR-VERDIGRE CREEK 42.5963 -98.3165 NE DNR No NE Dam Safety ECHO CANYON DAM LINCOLN NV H Non-Failure 03/07/2019 Hydrologic/Flooding Spillway Erosion/Head Cutting NV00117-3353 Rain on snow event in watershed caused excessive runoff into the basin which caused earthen spillway to activate and caused 20 foot deep headcut. Erosion was stopped at rock cutoff wall. No 0 0 0 0 None Unknown owner was onsite during high flow event and monitored the situation. Did not activate the EAP. S RE FR Y 58 ft 1750.00 64.00 1970 NV00117 MEADOW VALLEY WASH 37.9072 -114.272 NEVADA DWR 2 days NV Dam Safety LAUREL CREEK DAM VA U Non-Failure 03/14/2019 Hydrologic/Flooding Overtopping Erosion VA077004-3300 Dam had overtopped and came very close to failing. The overtopping was several inches deep over 1/3 to 1/2 the length of the dam. Head cutting erosion started in several places at the toe of the dam. 0 P RE R N 24 ft 124.00 10.00 1974 VA077004 LAUREL CREEK 36.7242 -81.3635 DEPARTMENT OF CONSERVATION AND RECREATION VA DCR SPENCER DAM NE S Failure 03/14/2019 Other Overtopping Other NE00628-3328 Major flood and ice run on the river overtopped the dam and caused failure. Winter Storm Ulmer No 1 1 Bridges Unknown Dam operators attempted to evacuate the individual living just downstream but the home apparently washed away before that happened. 16487 U RE H NR 45 ft 16487.00 864.00 1927 NE00628 NIOBRARA RIVER 42.8088 -98.6566 NE DNR 5:15 AM Yes ASDSO Independent Investigation Panel Y RAKES TAVERN LP DAM VA U Non-Failure 03/19/2019 Deterioration or Poor Condition Spillway Riser Failure Overtopping VA067000-3317 Pond overflow pipe is broken off down in the pond and is stopped up so that it no longer works and is overflowing at the corner of the dam and is flooding roadside. the water flowing over the North corner of the dam appears to be degrading the dam itself 0 0.00 VA067000 0 0 DEPARTMENT OF CONSERVATION AND RECREATION VA DCR WAGON HOUND WY L Failure 03/20/2019 Hydrologic/Flooding High Reservoir Level Reservoir Overfilling Insufficient Spillway Capacity WY00723-3351 Rain on snowmelt event caused overtopping and eventually erosion of the dam embankment. No 0 0 0 1 Roads $1 to $100,000 144 P RE I NR 30 ft 331.00 30.00 1946 WY00723 WAGON HOUND CREEK 43.4542 -106.746 SEO 1 day No WY Dam Safety HANSKA LAKE MN Non-Failure 03/21/2019 Hydrologic/Flooding Erosion Overtopping MN00070-3261 Flooding due to spring runoff. Spilling around the west side of the dam causing scour erosion. No 0 0 0 0 None None Riprap placed on west side of the structure to stop erosion. S REPG NR 6 ft 13777.00 1740.00 1930 MN00070 WATONWAN RIVER - TR 44.11 -94.5663 1986 MNDNR 1 day Yes MNDNR DULL WY L Failure 03/21/2019 Deterioration or Poor Condition Erosion WY00757-3352 Rain on snowmelt event. The dam had already experience erosion around the outlet pipe five months prior to the failure. No 0 0 0 0 Roads $1 to $100,000 376 P RE I NR 29 ft 616.00 48.00 1937 WY00757 SHEEP CREEK 43.4133 -104.507 SEO 5 months No WY Dam Safety HIDDEN TIMBER SD L Failure 03/23/2019 Hydrologic/Flooding Unknown SD00040-3249 No 0 Unknown post failure site visit by owner staff S RE PR NR 18 ft 824.00 32.00 1933 SD00040 ANTELOPE CREEK 43.2317 -100.415 1959 DENR No SD DENR QUINN DAM SD L Failure 03/26/2019 Unknown Unknown SD01073-3250 No 0 Unknown County officials close the downstream highway for a few hours while the situation was assessed, highway was reopened once it was verified the downstream drainage and culverts could handle expected outflow L RE R NR 17 ft 865.00 87.00 1937 SD01073 TR-BAD RIVER 43.9967 -102.132 DENR No SD DENR OKOBOJO DAM SD S Failure 04/01/2019 Unknown Unknown SD00438-3251 No 0 Unknown report of dam failure was verified P RE PRS NR 22 ft 3150.00 128.00 1938 SD00438 TR OKOBOJO CREEK 44.6433 -100.427 DENR No SD DENR MENNO DAM SD H Non-Failure 04/01/2019 Hydrologic/Flooding Spillway Erosion/Head Cutting Animal Activity SD00026-3408 Secondary spillway experienced significant heading cutting when it operated during both April and August of 2019. Erosion related to livestock grazing on the spillway likely contributed to the development of the issue. No 0 0 0 0 Owner increased monitoring of the dam and secondary spillway until it was repaired in Fall of 2019. S RE R Y 53 ft 2050.00 48.00 1935 SD00026 JAMES RIVER TRIBUTARY 43.2617 -97.6167 1996 DENR SD Dam Safety OXBO FLOWAGE WI L Failure 04/01/2019 Seepage/Internal Erosion Excessive/Increased Seepage Piping WI12745-3418 Water flowing into the embankment adjacent to the inlet of the horizontal CMP of water control structure. Water flowing through and underneath of the CMP. 10 days after initial observation, embankment was completely breached. Yes 0 0 0 0 None None Owners activitated EAP and closely monitored the site. Barricaded and signed to prevent entry to public. S RE R Y 8 ft 100.00 28.00 WI12745 OXBO CREEK 45.1701 -89.4056 WIDNR 10 days No WI Dam Safety SWAN BUFFALO DET D#12 ND S Non-Failure 04/03/2019 Hydrologic/Flooding High Reservoir Level ND00199-3322 Spring snowmelt runoff caused flow through the dam's auxiliary spillway. No 0 0 0 None L RE C Y 28 ft 1615.50 29.00 1960 ND00199 SWAN CREEK 46.9834 -97.3911 NDSWC 1 week No COTTONWOOD CREEK DAM ND S Non-Failure 04/04/2019 Hydrologic/Flooding High Reservoir Level ND00011-3320 Spring snowmelt runoff caused flow through the dam's auxiliary spillway. No 0 0 0 None L RE R N 76 ft 16839.00 494.00 1973 ND00011 COTTONWOOD CREEK 46.299 -98.2671 1979 NDSWC 1 week No MINA SD S Non-Failure 04/04/2019 Hydrologic/Flooding Spillway Chute Failure SD00016-3407 During heavy spring runoff the lower portions of several slab panels along the toe of the primary concrete spillway where displaced and washed downstream. No 0 0 0 0 Increased monitoring of the spillway until water levels decreased, an in-depth spillway inspection and assessment was done Summer 2019, temporary repair was completed in Spring 2020, an updated breach analysis was done, and owner has started planning on a full replacement. S RE R N 32 ft 19000.00 850.00 1934 SD00016 SNAKE CREEK 45.4417 -98.7317 2001 DENR SD Dam Safety SPRING LAKE DAM OH L Non-Failure 04/06/2019 Deterioration or Poor Condition Spillway Pipe Failure Sinkhole Piping OH00207-3381 Sinkhole developed in the crest due to bad joint in the principal spillway outlet pipe. Spillway replaced. No 0 P RE R N 29 ft 63.30 5.00 1969 OH00207 TRIBUTARY TO CAESAR CREEK 39.6486 -83.8289 DEPARTMENT OF NATURAL RESOURCES No OH Dam Safety CHARLESTON RESERVOIR NV L Failure 04/16/2019 Manmade Action Overtopping Insufficient Spillway Capacity Other NV00038-3247 There were modifications that were completed on the spillway and outlet, which reduced the capacity of this facility. The dam failed during spring runoff due to this reduced capaicty. No 0 0 0 0 Roads Unknown 500 P RE IP NR 16 ft 500.00 50.00 1920 NV00038 BRUNEAU RIVER 41.5823 -115.497 1963 NEVADA DWR Yes NV DWR TILDEN WI L Non-Failure 04/18/2019 Hydrologic/Flooding Spillway Deficiency Erosion Debris Clogging WI00341-3417 Years ago, owner constructed a 2-3 ft high concrete section on top of spillway w/o state approval. Concrete section failed plus erosion of right abument. No 0 0 0 0 Other Unknown Dam safety staff notified by local enforcement and DNR conservation warden. Contacted owner to monitor and further activate EAP if needed. P PGRE HR N 16 ft 250.00 61.00 1886 WI00341 DUNCAN CREEK 44.9868 -91.4184 1913 WIDNR 1 day No WI Dam Safety CHEROKEE COUNTRY CLUB LAKE DAM # 2 MIDDLE LAKE GA H Non-Failure 04/19/2019 Hydrologic/Flooding Sinkhole Insufficient Spillway Capacity Spillway Pipe Failure GA03845-3346 Amid rampant rains, two sinkholes formed above spillway alignment on downstream slope. Yes Unknown Unknown Unknown None Unknown Program required lake lowered 2' below NP and affected area taped off. 3" pumps were employed. P RE R Y 33 ft 34.40 2.00 1966 GA03845 UNKNOWN 33.9951 -84.3639 GA-SAFE DAMS PROGRAM Yes GA Safe Dams Program HEADS CREEK RESERVOIR DAM GA H Non-Failure 04/19/2019 Hydrologic/Flooding Spillway Erosion/Head Cutting High Reservoir Level GA01465-3347 Scour damage due to major rainfall and spillway's left sidewall being overtopped in high flows. Unknown Unknown Unknown Unknown Unknown Unknown Consultant was hired fairly quickly and called the Program. Consultant inspected the dam on 5/1/19. L RE S Y 32 ft 7588.00 300.00 1963 GA01465 HEAD'S CREEK 33.2804 -84.3744 1983 GA-SAFE DAMS PROGRAM Unknown GA Safe Dams Program WITTENBERG WI L Non-Failure 04/19/2019 Hydrologic/Flooding Overtopping Erosion Accident or Misoperation WI00057-3419 Overtopping led to erosion and partial embankment failure, particularly near concrete spillway and cutoff wall. Additional seepage observed. Delay in operating gates may have contributed. No 0 0 0 0 Roads, Bridges, Dams Downstream $1 to $100,000 Dam safety staff notified by local enforcement and DNR conservation warden. Contacted owner to monitor, provided FYI to downstream residents. Owner advised to further activate EAP if conditions deteriorated further. P PGRE R Y 22 ft 360.00 40.00 1885 WI00057 MIDDLE BRANCH EMBARRASS 44.8411 -89.1575 1908 WIDNR 1 day No WI Dam Safety LINN GROVE MILLDAM IA L Failure 04/22/2019 Hydrologic/Flooding Overtopping IA01308-3244 Low Head Dam. Flood event cause overtopping and breaching in two locations of the abutment area. 0 0 0 0 None None L PG R NR 9 ft 416.00 90.00 1924 IA01308 LITTLE SIOUX RIVER 42.8956 -95.2448 IOWA DNR IA DNR LINN GROVE MILLDAM IA L 04/22/2019 Hydrologic/Flooding Overtopping IA01308-3361 Low Head Dam. Flood event cause overtopping and breaching in two locations of the abutment area. L PG R NR 9 ft 416.00 90.00 1924 IA01308 LITTLE SIOUX RIVER 42.8956 -95.2448 IOWA DNR IA Dam Safety DAVIS FISH DAM ND L Non-Failure 04/23/2019 Seepage/Internal Erosion Spillway Pipe Failure Piping Sinkhole ND00211-3323 A section of the CMP principal spillway conduit separated near the outlet, resulting in erosion around the outlet and a sinkhole over the outlet. No 0 0 0 Other S RE R NR 31 ft 307.40 15.00 1963 ND00211 SPRING CREEK 46.546 -103.658 1985 NDSWC No SUMMIT CREEK NO. 1 UT L Non-Failure 04/29/2019 Seepage/Internal Erosion Excessive/Increased Seepage Abutment Failure UT30025-3366 Flood control dam filled during high spring runoff. Excessive seepage and internal erosion from right abutment. No 0 0 0 0 Unknown Community officals responsive during incident. Provided pumps to lower reservoir. Owner lowered spillway followng the event. P RE C NR 23 ft 137.00 0.00 1913 UT30025 39.9757 -111.813 UTAH DIVISION OF WATER RIGHTS 2 days Yes UT Dam Safety LAKE VAN NORDEN CA H Non-Failure 04/30/2019 Deterioration or Poor Condition Spillway Chute Failure CA00362-3254 Large hole at the downstream right end of the spillway invert during high spring spill flows. Yes 0 0 0 0 None None Immediate response by dam owner, Division of Safety of Dams, and first responders. P RE HS N 30 ft 300.00 135.00 1916 CA00362 SOUTH YUBA RIVER 39.322 -120.377 DWR, SAFETY OF DAMS 1 week Yes CA DSOD LAKE ROCKDALE DAM GA H Non-Failure 04/30/2019 Hydrologic/Flooding Erosion GA01282-3348 Spillway system overwhelmed from heavy rains. Excess flow created erosion along spillway pipe. Unknown Unknown Unknown Unknown Unknown Unknown Program visited site. P RE R N 33 ft 1579.00 75.00 1961 GA01282 UNKNOWN 33.7042 -83.9797 GA-SAFE DAMS PROGRAM Unknown GA Safe Dams Program DAM AT HLE TX Non-Failure 05/01/2019 Unknown Spillway Deficiency TX07552-3294 SPILLWAY FAILURE RE 19 ft 57.00 0.00 TX07552 0 0 TCEQ SOESTER CAYLOR DAM NE L Failure 05/01/2019 Deterioration or Poor Condition Other High Reservoir Level NE09793-3375 Wave erosion broke through crest of dam during high reservoir levels No 0 0 0 0 None $1 to $100,000 131 P RE P NR 16 ft 132.00 18.00 1950 NE09793 TR-WHITE RIVER 42.7245 -103.3 NE DNR No NE Dam Safety VAN BUREN LAKE DAM OH S Non-Failure 05/08/2019 Structural Stability Abutment Failure Landslide OH00450-3382 Slide in the right downstream abutment. Repair plans are drafted. No 0 S RE R Y 23 ft 903.00 55.00 1939 OH00450 ROCKY FORD CREEK 41.1339 -83.6444 DEPARTMENT OF NATURAL RESOURCES No OH Dam Safety KELLAM DAM VA U Non-Failure 05/09/2019 Deterioration or Poor Condition Spillway Pipe Failure VA131004-3305 Report of failed dam components (riser/barrel) from dam owner and county. Decrease in normal pool lake level. Dam did not fail. No 0 P RE I N 10 ft 251.00 0.00 1960 VA131004 TR-THE GULF 37.3695 -75.9825 DEPARTMENT OF CONSERVATION AND RECREATION VA DCR CANTRELL LAKE DAM TX L Failure 05/10/2019 Unknown Unknown TX02805-3388 0 P RE S NR 18 ft 137.00 12.00 1972 TX02805 TR-HORSLEY CREEK 32.4586 -95.6248 TCEQ TX Dam Safety COTTON LAKE DAM TX L Failure 05/12/2019 Unknown Unknown TX02845-3387 0 P RE S NR 16 ft 96.00 10.00 1970 TX02845 TR-CANEY CREEK 32.5709 -95.9518 TCEQ TX Dam Safety LAKE DUNLAP DAM TX H Non-Failure 05/14/2019 Unknown Gate/Valve Failure TX01602-3287 SPILLWAY GATE FAILED S RE HR Y 41 ft 14330.00 410.00 1928 TX01602 GUADALUPE RIVER 29.654 -98.0663 TCEQ TCEQ LAKE DUNLAP DAM TX H Non-Failure 05/14/2019 Malfunction of Equipment/Gate Gate/Valve Failure TX01602-3386 SPILLWAY GATE FAILED 0 S RE HR Y 41 ft 14330.00 410.00 1928 TX01602 GUADALUPE RIVER 29.654 -98.0663 TCEQ TX Dam Safety NEWELL SD L Non-Failure 05/23/2019 Hydrologic/Flooding Spillway Pipe Failure SD00011-3413 High flows during spring of 2019 resulted in the primary spillway conduits failing on the downstream side of the dam and eroding area up to the dam crest. No 0 unknown unknown unknown Other As conditions allow owner is maintaining a lowered reservoir level to reduce flow through the primary spillway to prevent further damage. S RE CPR NR 28 ft 2550.00 158.00 1958 SD00011 WILLOW CREEK 44.835 -103.385 1998 DENR SD Dam Safety WATERFORD POND DAM IA L Non-Failure 05/29/2019 Deterioration or Poor Condition Sinkhole Spillway Pipe Failure IA00914-3243 The corrugated metal pipe spillway deteriorated leading to a 15 foot by 10 foot sinkhole on the backside of the dam. No 0 0 0 0 None None P RE P NR 40 ft 97.00 4.00 1966 IA00914 TR-BEAVER CREEK 41.6748 -93.7419 IOWA DNR IA DNR WATERFORD POND DAM IA L Non-Failure 05/29/2019 Deterioration or Poor Condition Spillway Pipe Failure Sinkhole IA00914-3359 The corrugated metal pipe spillway deteriorated leading to a 15 foot by 10 foot sinkhole on the backside of the dam. P RE P NR 40 ft 97.00 4.00 1966 IA00914 TR-BEAVER CREEK 41.6748 -93.7419 IOWA DNR IA Dam Safety Clement Lake Dam NJ L Failure 06/01/2019 Hydrologic/Flooding Overtopping Insufficient Spillway Capacity NJ00000-3363 Heavy rainstorm caused overtopping failure of earthen embankment No 0 0 0 0 Unknown Unknown L RE NR 0.00 0 NJ00000 Millard Creek 39.8364 -74.957 NJ DEP 1 day Unknown NJ Dam Safety MISSELBECK CA H Non-Failure 06/03/2019 Other Other CA01027-3256 Sediment build up in the reservoir has likely caused the entrance of the outlet works to become plugged. A combined release of ~1 cfs from both pipes while all four valves were fully open was observed during inspections. Yes 0 0 0 0 None None Immediate response by dam owner and Division of Safety of Dams U RE CS Y 96 ft 3600.00 113.00 1920 CA01027 NFK COTTONWOOD CR 40.5003 -122.697 DWR, SAFETY OF DAMS Yes CA DSOD JONES LAKE DAM SD H Non-Failure 06/13/2019 Unknown Sinkhole SD00758-3405 The conduit spillway of the dam's two primary spillways had a sinkhole with seepage develop around it on the downstream side. Yes 0 unknown unknown unknown The county emergency manager notified residents downstream of the dam of the situation. The owner used pumps to lower the water level and put a temporary berm across the conduit inlet. S RE R Y 21 ft 1260.00 101.00 1938 SD00758 TR-JAMES RIVER 44.4783 -98.9467 2000 DENR SD Dam Safety UPPER SHAKER LAKE DAM OH H Non-Failure 06/26/2019 Seepage/Internal Erosion Sinkhole Piping Other OH00353-3383 Ongoing incident, additional movement of downstream wall along the crest and settlement of sidewalk on the crest. Most likely due to lose of fill material about masonry spillway conduit. Lake is now completely drained and waiting to be repaired. No 0 L RE R Y 30 ft 155.00 11.00 1852 OH00353 DOAN BROOK 41.4831 -81.5606 DEPARTMENT OF NATURAL RESOURCES No OH Dam Safety WALTER DAM NE L Failure 07/09/2019 Hydrologic/Flooding Overtopping NE00287-3368 Heavy rain produced flooding that overtopped the dam. No 0 0 0 0 None $1 to $100,000 78 P RE I NR 19 ft 78.60 7.00 1944 NE00287 TR-TURKEY CREEK 40.7174 -99.2459 NE DNR No NE Dam Safety KINSMAN LAKE DAM OH S Failure 07/19/2019 Hydrologic/Flooding Overtopping OH02490-3384 In the morning of July 19, 2019, the Kinsman Lake Dam watershed received about 6-inches of rain within 4 hours. The right end of the dam was overtopped and completely breached. No 0 60 (not downstream, limited access) 25 (not downstream, limited access) 0 Roads, Bridges, Power lines/gas pipelines $1 million to $5 million County Engineer assisted Township to get the road reopened but did not reestablish the dam and lake. 145.4 P RE R Y 23 ft 145.40 9.00 OH02490 STRATON CREEK 41.4494 -80.58 DEPARTMENT OF NATURAL RESOURCES 8:15 am No OH Dam Safety MENNO DAM SD H Non-Failure 08/01/2019 Hydrologic/Flooding Spillway Erosion/Head Cutting Animal Activity SD00026-3409 Secondary spillway experienced significant heading cutting when it operated during both April and August of 2019. Erosion related to livestock grazing on the spillway likely contributed to the development of the issue. No 0 0 0 0 Owner increased monitoring of the dam and secondary spillway until it was repaired in Fall of 2019. S RE R Y 53 ft 2050.00 48.00 1935 SD00026 JAMES RIVER TRIBUTARY 43.2617 -97.6167 1996 DENR SD Dam Safety BECKMAN LAKE WI S Non-Failure 08/23/2019 Malfunction of Equipment/Gate Other WI00998-3420 Wasn't a significant incident per se. Stoplog at the bottom of the riser pipe broke. Was signficant in the fact that nearly the entire impoundment needed to drain in order to complete repair. Yes 0 0 0 0 None None Activated EAP by keeping necessary parties informed and implemented monitoring procedures. S PGRE R Y 21 ft 800.00 73.00 1965 WI00998 ZANDER CREEK 42.5819 -89.7745 WIDNR 3 days No WI Dam Safety DOWDY DAM 6106 NE L Failure 09/01/2019 Deterioration or Poor Condition Spillway Pipe Failure NE06106-3371 Corrosion of CMP Spillway Conduit led to internal erosion. No 0 0 0 0 Roads $1 to $100,000 2 L RE C NR 26 ft 32.10 3.00 1980 NE06106 TR-ROSE CREEK 40.0526 -97.2591 NE DNR No NE Dam Safety LAKE CORSICA DAM SD H Non-Failure 09/11/2019 Hydrologic/Flooding High Reservoir Level Gate/Valve Failure SD01091-3406 Heavy rainfall over already wet watershed resulted in a high reservoir level. The low level outlet gate was also damaged during the event causing it to discharge uncontrolled flow. 0 unknown unknown unknown Downstream campground was closed for a period of time after the event, dam owner and county emergency manager contacted state dam safety staff on additional actions and monitoring needed, state dam safety staff inspected the dam five days after the event. L RE R Y 32 ft 2020.00 116.00 1939 SD01091 CHOTEAU CREEK 43.41 -98.2983 1986 DENR SD Dam Safety EAST VERMILLION SD L Non-Failure 09/11/2019 Hydrologic/Flooding Spillway Erosion/Head Cutting SD00031-3411 Earthcut secondary spillway experienced significant heading cutting when it operated during as a result of runoff from heavy rainfalls on Sept. 11-12, 2019. No 0 unknown unknown unknown Roads Owner increased monitoring of the dam and secondary spillway until water levels dropped. East campground and boat ramp was temporarily closed and assistance was provided to get groceries to any stranded campers. S RE CR NR 41 ft 17400.00 294.00 1958 SD00031 E FORK VERMILLION RIVER 43.59 -97.1717 1994 DENR SD Dam Safety NEW STICKNEY (NELSON) SD L Failure 09/11/2019 Hydrologic/Flooding Unknown SD00688-3412 Wide spread rainfall on saturated ground ranging from 5 to 10 inches between September 11-12, 2019. High flows contributed to significant erosion around conduits of primary spillway back to the reservoir and partial failure of the dam. No 0 unknown unknown unknown State dam safety staff did a site visit on Sept. 17, 2019 and notified dam owner of the observed damage. Site condition limited access to damaged areas of the dam at the time of visit. S RE R NR 18 ft 177.00 14.00 1965 SD00688 TR-JAMES 43.6217 -98.355 DENR SD Dam Safety PLATTE SD L Failure 09/12/2019 Hydrologic/Flooding Overtopping SD00010-3409 Wide spread rainfall on saturated ground ranging from 5 to 10 inches between September 11-12, 2019 caused Platte Creek to reach record levels which overtopped and failed Platte Dam. No 0 unknown unknown unknown State dam safety staff did a site visit on Sept. 17, 2019 to document. L RE R NR 28 ft 1200.00 0.00 1935 SD00010 PLATTE CREEK 43.385 -98.8867 1973 DENR SD Dam Safety LAKE HANSON SD L Failure 09/12/2019 Hydrologic/Flooding Spillway Erosion/Head Cutting SD00691-3410 Wide spread rainfall on saturated ground ranging from 5 to 10 inches between September 11-12, 2019 caused operation of the earthen secondary spillway which eroded back to the reservoir. No 0 unknown unknown unknown Roads State dam safety staff did a site visit on Sept. 17, 2019 to document. S RE R NR 24 ft 340.00 0.00 1932 SD00691 TR-JAMES 43.625 -97.805 1996 DENR SD Dam Safety FREEMAN DAM VA U Non-Failure 09/16/2019 Deterioration or Poor Condition Abutment Failure Erosion VA095054-3391 Partial failure of the downstream side of the embankment (continued erosion - under grant for design of repair) unknown unknown unknown P NR 30 ft 65.10 5.00 VA095054 37.2411 -76.7003 Yes VA Dam Safety SYKESTON DAM ND S Non-Failure 09/21/2019 Hydrologic/Flooding High Reservoir Level Erosion ND00009-3319 Area received 7-9 inches of rain, resulting in very high reservoir levels. Water flowed around the sides of the concrete chute spillway, resulting in some erosion behind one chute wall. No 0 0 0 Roads L RE S Y 27 ft 3790.80 105.00 1908 ND00009 PIPESTEM CREEK 47.4845 -99.3967 1936 NDSWC No Graphic Packaging Sludge Drying Basin Dam GA L Failure 09/29/2019 Unknown Unknown GA00000-3345 Dam was built several months ago without plans. Facility wants to re-build. No 0 Unknown Unknown Unknown Unknown Unknown Facility had an engineer come out for cost estimate to repair and will have more come out. P RE O NR 12 ft 30.00 1.00 2019 GA00000 32.78 -83.63 Yes GA Safe Dams Program WATERVILLE RESERVOIR DAM #2 NY S Non-Failure 10/31/2019 Hydrologic/Flooding Overtopping Debris Clogging Insufficient Spillway Capacity NY12268-3364 Record runoff and stream flows from the upstream drainage basin blocked the spillway channel. High stream flows and scour velocities eroded away the deteriorated but functional concrete lined spillway channel and transported debris. This blockage re-routed the stream flow into right basin of NY12268. This basin filled to capacity and overtopped the dividing wall basins. Left Basin (No. 1) filled to capacity and then overtopped the embankment. The high water flow and velocity eroded a section of the earth and stone lined core wall at the location of a water main penetration. No 0 0 0 0 Roads, Water/sewer lines $1 million to $5 million L MS S Y 10 ft 7.00 3.00 1917 NY12268 TR-BIG CREEK 42.9283 -75.3383 NYS DEC 20:00 1 day Yes NY Dam Safety Wolf Springs Dam #4 WI L Non-Failure 11/01/2019 Seepage/Internal Erosion Piping Excessive/Increased Seepage Animal Activity WI00000-3421 Earthen embankment had not been maintained. Partial breach of earthern embankment, adjacent to one of 2 riser pipes. Original construction occurred w/o authorization by a different owner which likely contributed. No 0 0 0 0 None None After inspection of the breached area, a letter was sent to owner requesting complete lowering of impoundment and directive for removal plans to be submitted L RE R N 8 ft 125.00 21.00 WI00000 Totagatic-TR 46.1409 -91.7505 WI DNR No WI Dam Safety LAKE ZUMBRO CDF MN L Failure 11/22/2019 Structural Stability Foundation Deficiency Slope Stability MN01822-3355 New dam. Concerns about possible karst at spillway. Dam failed during initial filling 2 to 3 feet below design level. No 0 0 0 0 Other $1 to $100,000 Emergency repairs of breach. Dredging downstream harbor of sediments. L RE O NR 37 ft 518.00 0.00 MN01822 44.1695 -92.4304 MNDNR EWR Yes MN Dam Safety SPOTSYLVANIA COUNTY DAM #9 VA U Failure 12/07/2019 Deterioration or Poor Condition Spillway Pipe Failure Excessive/Increased Seepage Erosion VA177036-3392 Dam loss of containment reported on 12/7/19. Failure appears due to excessive seepage and free flowing low level outlet pipe that cannot be located. Dam can refill to about 15' during storm events. unknown Unknown Unknown X NR 30 ft 165.70 13.00 VA177036 38.2208 -77.6859 Yes VA Dam Safety SPENCER LAKE - NORTH DAM OH L Non-Failure 12/20/2019 Deterioration or Poor Condition Spillway Riser Failure OH00619-3385 The riser appears to have settled causing the joint between the riser and the outlet pipe to start leaking. Water level is lowered and monitoring. Working on repair plans. Yes 0 S RE R Y 15 ft 258.00 30.00 1960 OH00619 TRIBUTARY TO EAST BRANCH BLACK RIVER 41.115 -82.0858 DEPARTMENT OF NATURAL RESOURCES No OH Dam Safety JD RESERVOIR NV L Non-Failure 01/01/2020 Seepage/Internal Erosion Animal Activity Erosion NV00192-3354 Upon the 2020 dam inspection, a large eroded hole was found next to the principal spillway outlet on the downstream side. On the upstream side, a rodent hole was found that was spilling, contributing to the erosion. No 0 0 0 0 None $1 to $100,000 P RE IP Y 20 ft 300.00 30.00 NV00192 HENDERSON CREEK 40.0905 -116.266 NEVADA DWR Unknown NV Dam Safety ROBBINS LAKE DAM MS U Non-Failure 01/02/2020 Hydrologic/Flooding Overtopping Insufficient Spillway Capacity Erosion MS00104-3460 1‐3 ft overtopping, at least 3 large head cut erosion scalps on downstream slope. N 0 0 0 0 0 0 County officials shut down one lane of traffic and maintained a lowered lake level until repairs could be completed. New culverts installed and backslope regraded and armored with grouted riprap. L RE R NR 32 ft 886.00 36.00 1973 MS00104 ROBBINS BAYOU 31.432 -91.4046 MS DEPARTMENT OF ENVIRONMENTAL QUALITY 7:30 pm Y MDEQ Dam Safety HOLMES LAKE DAM MS L Failure 01/02/2020 Hydrologic/Flooding Foundation Deficiency Piping MS01794-3467 Breach: 50 ft top and 10 ft bottom, fully drained. Tree stumps & roots visible in base of foundation. N 0 0 0 0 0 0 165 P RE R NR 18 ft 165.00 0.00 1960 MS01794 TR- TALLAHALLA CREEK -OS 32.1894 -90.3943 MS DEPARTMENT OF ENVIRONMENTAL QUALITY I day Y MDEQ Dam Safety SOUTHWOOD LODGE LAKE DAM MS L Non-Failure 01/03/2020 Manmade Action Erosion Of Spillway Chute MS00430-3463 Headcut in primary; new spillway cut for drainage and prevent loss of home adjacent to the spillway. N 0 0 0 0 0 0 P RE R NR 25 ft 720.00 0.00 1969 MS00430 TR- TURKEY CREEK 31.4606 -91.2627 MS DEPARTMENT OF ENVIRONMENTAL QUALITY Y MDEQ Dam Safety Dunn Lane Dam MS L Non-Failure 01/11/2020 Deterioration or Poor Condition Vegetation MS00000-3486 Fallen tree during tornado, rootball in dam. Lowered water, excavate, backfill and compact. N 0 0 0 0 0 0 P RE R No 0.00 MS00000 34.9097 -89.8342 MS DEPARTMENT OF ENVIRONMENTAL QUALITY N MDEQ Dam Safety OKTIBBEHA COUNTY LAKE DAM MS H Non-Failure 01/14/2020 Hydrologic/Flooding Sliding MS00338-3462 75 ft wide slide, 6-7 feet in depth to failure plane; previously repaired w/ improper soils. County elected to lower lake level to reduce risk presented by structure until repairs can be completed. L RE C Y 43 ft 10430.00 479.00 1965 MS00338 BIBA WITA CREEK 33.507 -88.932 2003 MS DEPARTMENT OF ENVIRONMENTAL QUALITY Yes MDEQ Dam Safety LAKEMONT LAKE DAM MS H Failure 01/14/2020 Seepage/Internal Erosion Spillway Chute Failure MS02667-3472 Very narrow breach (8 ft) controlled flow enough to prevent innundation of downstream structures. N 0 0 0 0 0 0 Owners/ EMA did not follow EAP. MDEQ not notified till 2 weeks after. 115 P RE R Y 21 ft 120.00 9.00 1930 MS02667 SOWASHEE CREEK 32.3471 -88.6912 MS DEPARTMENT OF ENVIRONMENTAL QUALITY I day Y MDEQ Dam Safety Murphy Road Dam MS L Non-Failure 01/28/2020 Deterioration or Poor Condition Sinkhole MS00000-3487 Sinkholes identified and would lead to failure. Owner ordered to repair. N 0 0 0 0 0 0 EMA agreed to contact landowner regarding necessary repairs. P RE R No 3.00 MS00000 32.3661 -88.77 MS DEPARTMENT OF ENVIRONMENTAL QUALITY N MDEQ Dam Safety Jennings Lake Dam #1 MS L Failure 02/05/2020 Hydrologic/Flooding Animal Activity Overtopping Insufficient Spillway Capacity MS00000-3484 Spillways blocked by beaver dams; overtopped dam, eroding crest & backslope. Full loss. N 0 0 0 0 0 0 20 P RE R No 4.00 MS00000 31.8278 -89.4628 MS DEPARTMENT OF ENVIRONMENTAL QUALITY 10:00 AM 1 day Y MDEQ Dam Safety Jennings Lake Dam #2 MS L Non-Failure 02/05/2020 Hydrologic/Flooding Animal Activity Overtopping Insufficient Spillway Capacity MS00000-3485 Spillways blocked by beaver dam construction, so the dam was actively overtopping. Did not fail. N 0 0 0 0 0 0 After contact with owner, beaver dams were cleared weeks after overtopping incident. P RE R No 4.00 MS00000 31.8292 -89.4622 MS DEPARTMENT OF ENVIRONMENTAL QUALITY Y MDEQ Dam Safety BILBRO LAKE DAM MS L Non-Failure 02/10/2020 Hydrologic/Flooding Overtopping MS02021-3468 Overtopped from insufficient spillway capacity; cut aux spillway to the northwest side of the dam. N 0 0 0 0 0 0 Owner had contractor cut a new spillway over natural ground to help drain and prevent failure. P RE R NR 12 ft 120.00 0.00 1955 MS02021 TR- PELLAPHALIA CREEK 32.758 -89.5672 MS DEPARTMENT OF ENVIRONMENTAL QUALITY Y MDEQ Dam Safety Blanche Street Pond Dam MS Failure 02/10/2020 Seepage/Internal Erosion Piping MS00000-3488 Dam next to Town Creek; water backflowing from the creek into the pond through a piping failure. N 0 0 0 0 0 0 Worked with EMA and responders to plug the piping failure until permanent repairs could be made. P RE 0.00 MS00000 0 0 MS DEPARTMENT OF ENVIRONMENTAL QUALITY 1 day Y MDEQ Dam Safety MS04462 LAKE DAM MS U Non-Failure 02/11/2020 Hydrologic/Flooding Overtopping MS04462-3478 Blockage of primary caused dam to overtop; substantially scoured and eroded backslope of dam. N 0 0 0 0 0 0 P RE R NR 9 ft 62.00 10.00 MS04462 32.8335 -90.3566 MS DEPARTMENT OF ENVIRONMENTAL QUALITY N MDEQ Dam Safety LAKE CAVALIER DAM MS H Non-Failure 02/12/2020 Hydrologic/Flooding Sliding MS02274-3470 40 ft wide slide, 4 -5 ft to failure plane, no seepage. Covered with plastic sheeting until repaired N 0 0 0 0 0 0 P RE R Y 35 ft 2530.00 178.00 1954 MS02274 32.4676 -90.2262 2005 MS DEPARTMENT OF ENVIRONMENTAL QUALITY Yes MDEQ Dam Safety BIDDLE LAKE DAM MS L Non-Failure 02/28/2020 Hydrologic/Flooding Overtopping Insufficient Spillway Capacity MS04513-3479 1 of 3 culverts blocked. The loss of capacity lead to overtopping of the dam, eroding backslope. Y 0 0 0 0 0 0 Collum contacted the Tombigbee River Valley Water Management District about repairs as they had previously repaired the structure. P RE R N 17 ft 98.00 7.00 MS04513 34.1555 -88.4259 MS DEPARTMENT OF ENVIRONMENTAL QUALITY Y MDEQ Dam Safety Claude Johnson Dam MD L Non-Failure 03/02/2020 Seepage/Internal Erosion Spillway Pipe Failure Piping Sinkhole MD00000-3432 Owner contacted MDE, 25'x10x7' sinkhole upstream. Nearly breached No 0 0 0 0 Unknown Siphon installed and pool restricted until repairs RE R NR 11 ft 28.00 3.00 1960 MD00000 St. Marys River 38.2835 -76.5378 MD Dam Safety 3 months No MD Dam Safety WRIGHT TN S Failure 04/03/2020 Manmade Action Debris Clogging Excessive/Increased Seepage Overtopping TN14112-3428 Dam overtopped due to clogged spillway. Excessive seepage noted on field reports over the years. No 0 Unknown Unknown 0 Water/sewer lines Unknown P RE O NR 25 ft 30.00 3.00 TN14112 36.1258 -85.2539 1 day Yes TN Dam Safety Y WRIGHT TN S Failure 04/03/2020 Seepage/Internal Erosion Spillway Erosion/Head Cutting Excessive/Increased Seepage TN14112-3516 Poorly constructed dam with excessive seepage noted previously. In addtion, spillway flow had been noted headcutting left abutment and toe of the dam. Combination of these factors led to complete failure during heavy rain event. No 0 Unknown Unknown 0 Roads Also impacts to water and sewer lines. 30 P RE O NR 25 ft 30.00 3.00 TN14112 36.1258 -85.2539 1 day Yes TN Safe Dams Y MS06876 LAKE DAM MS U Failure 04/12/2020 Hydrologic/Flooding Overtopping Foundation Deficiency MS06876-3482 Overtopping during rainfall event (8 in in 24 hrs) leading to headcut erosion through width of dam. N 0 0 0 0 0 0 131 P RE R NR 29 ft 131.00 7.00 MS06876 32.8735 -89.4027 MS DEPARTMENT OF ENVIRONMENTAL QUALITY 1 day N MDEQ Dam Safety CONFEDERATE HEIGHTS GOLF LAKE DAM MS U Failure 04/20/2020 Hydrologic/Flooding Spillway Deficiency MS01294-3464 Erosion of auxiliary - headcut advanced up spillway and drained pool from normal pool elevation. N 0 0 0 0 0 0 50 P RE R NR 25 ft 350.00 0.00 MS01294 32.1482 -90.1664 MS DEPARTMENT OF ENVIRONMENTAL QUALITY N MDEQ Dam Safety HESS CREEK DAM AK H Non-Failure 04/27/2020 Deterioration or Poor Condition High Reservoir Level Debris Clogging AK00017-3341 Satellite imagery on 4/25/2020 appears to show the dam is impounding significant amount of water. There is no serviceable
spillway. The low level outlet does not appear to be functioning. Wildfires last year burned area and likely increase runoff and erosion, potentially clogging low level
outlet causing impoundment. No 0 0 0 0 None None Inspection and monitoring as the reservoir level receeded. P RE S N 56 ft 10200.00 0.00 1946 AK00017 SOUTH FORK HESS CREEK 65.5933 -148.392 AKDNR 1 month Yes Alaska Dam Safety Y HESS CREEK DAM AK H Non-Failure 04/28/2020 Other Debris Clogging Reservoir Overfilling AK00017-3458 Low Level Outlet screen was clogged and reservoir overfilled during spring freshet. No 0 0 0 Unknown Dam owner coordinated with ADNR to breach the dam, and it will be deregulated in 2023. P RE S N 56 ft 10200.00 0.00 1946 AK00017 SOUTH FORK HESS CREEK 65.5933 -148.392 AKDNR Yes AKDNR FOUNTAIN LAKE CDF MN S Non-Failure 05/01/2020 Structural Stability Foundation Deficiency Sliding Slope Stability MN01804-3356 During construction, oversaturated foundation led to interior slope failure. Repaired. No 0 0 0 0 None $1 to $100,000 Owner and engineer completed emergency repairs. L RE O Y 25 ft 560.00 32.00 2017 MN01804 BANCROFT CREEK-OS 43.6959 -93.3798 MNDNR EWR Yes MN Dam Safety LAKE TCHUKOLAHO DAM GA L Failure 05/01/2020 Deterioration or Poor Condition Spillway Erosion/Head Cutting GA00165-3427 Dam failed due to head cutting through ES. No 0 0 0 0 Water/sewer lines $1 to $100,000 2000 P RE R NR 16 ft 3054.00 285.00 1959 GA00165 COMMISSIONER CREEK 32.8994 -83.2869 GA-SAFE DAMS PROGRAM 1 day No GA-SAFE DAMS PROGRAM EDENVILLE MI H Failure 05/19/2020 Hydrologic/Flooding Slope Stability High Reservoir Level MI00549-3511 In the IFT’s opinion, the most plausible principal mechanism for the failure of Edenville Dam, supported by strong evidence, is static liquefaction (flow) instability of saturated, loose sands in the downstream section of the embankment. The record lake level at the time of the failure and the duration of high water levels almost certainly contributed to the static liquefaction instability failure. Yes 0 10000 3000 3000 Dams Downstream over $100 million See IFT Report 66200 P PGRE CH Y 54 ft 66200.00 2600.00 1925 MI00549 TITTAWABASSEE RIVER 43.8142 -84.3769 MICHIGAN DEQ Yes 2022 IFT Report Y SANFORD MI H Failure 05/19/2020 Hydrologic/Flooding Overtopping MI00550-3512 The failure was the result of embankment overtopping. The breach outflows from Wixom Lake after the failure of Edenville Dam caused the water level in Sanford Lake to rise more quickly than could be accommodated by the spillways at Sanford Dam. Yes 0 11000 3000 3000 Roads over $100 million See IFT Report 15000 P CNMV H Y 36 ft 15000.00 1526.00 1925 MI00550 TITTAWABASSEE RIVER 43.6769 -84.3803 MICHIGAN DEQ Yes 2022 IFT Report Y SECORD MI H Non-Failure 05/19/2020 Hydrologic/Flooding High Reservoir Level MI00547-3513 High reservoir levels from the same flood that caused the Edenville and Sanford failures. See attached IFT Report for those failures. Yes 0 See IFT Report P PG CH Y 57 ft 15000.00 1100.00 1925 MI00547 TITTAWABASSEE RIVER 44.0411 -84.3419 MICHIGAN DEQ Yes 2022 IFT Report Y SMALLWOOD MI H Non-Failure 05/19/2020 Hydrologic/Flooding High Reservoir Level MI00548-3514 High reservoir levels from the same flood that caused the Edenville and Sanford failures. See attached IFT Report for those failures. Yes 0 See IFT Report P PGRE CH Y 36 ft 9000.00 500.00 1925 MI00548 TITTAWABASSEE RIVER 43.9586 -84.3361 MICHIGAN DEQ Yes 2022 IFT Report Y SPRING VALLEY LAKE DAM VA H Non-Failure 05/20/2020 Hydrologic/Flooding Overtopping VA770002-3393 Heavy rain resulted in overtopping unknown Unknown Unknown P RE R Y 26 ft 80.00 5.00 VA770002 ROANOKE 37.2564 -80.02 DEPARTMENT OF CONSERVATION AND RECREATION Yes VA Dam Safety Marple WI Failure 05/27/2020 Unknown Debris Clogging Animal Activity WI12749-3504 Exact cause unknown, but likely beaver activity clogged spillway leading to embankment failure. No 0 0 0 0 None $1 to $100,000 0 ft 0.00 0.00 0 WI12749 0 0 WIDNR 1 day Yes WIDNR BRIGHTON MD H Non-Failure 06/01/2020 Deterioration or Poor Condition Cracking Excessive/Increased Seepage MD00005-3430 Underwater leak through concrete face of buttress dam Yes 0 0 0 0 Unknown L CBER HS Y 82 ft 19560.00 800.00 1943 MD00005 PATUXENT RIVER 39.1934 -77.0055 MD DAM SAFETY Yes MD Dam Safety MAURY DAM VA U Non-Failure 06/05/2020 Structural Stability Sinkhole VA700004-3395 Sinkhole reported and subsequently repaired unknown Unknown Unknown X RE R N 14 ft 1162.00 0.00 VA700004 TR-JAMES RIVER 37.0414 -76.4873 DEPARTMENT OF CONSERVATION AND RECREATION Yes VA Dam Safety GAINES MILL DAM VA U Non-Failure 06/22/2020 Structural Stability Spillway Erosion/Head Cutting VA085006-3394 Spillway undermined and water flowing underneath it unknown Unknown Unknown X RE OR N 15 ft 150.00 27.00 VA085006 BLOODY RUN 37.5877 -77.3021 DEPARTMENT OF CONSERVATION AND RECREATION Yes VA Dam Safety LOWER IPC DAM NH S Non-Failure 06/22/2020 Seepage/Internal Erosion Piping Excessive/Increased Seepage NH00480-3441 Two whirlpools were observed upstream of the TC spillway No 0 0 0 0 None Unknown P CNTC H Y 16 ft 31.00 2.00 1934 NH00480 NEWFOUND RIVER 43.6 -71.748 1937 NHDES DAM BUREAU 68 days Yes NHDES DAM BUREAU RITO HONDO CO S Non-Failure 07/08/2020 Seepage/Internal Erosion Excessive/Increased Seepage CO00778-3447 Yes 0 0 0 0 S RE FR Y 50 ft 766.00 41.00 1956 CO00778 RITO HONDO 37.8914 -107.176 DWR 5 days Yes LAKE CAVALIER DAM MS H Non-Failure 07/09/2020 Hydrologic/Flooding Slope Stability MS02274-3471 Saturated conditions during a rainfall event led to a slope failure. N 0 0 0 0 0 0 Slope failure area was cover with plastic sheeting and monitored until repairs could be completed. P RE R Y 35 ft 2530.00 178.00 1954 MS02274 32.4676 -90.2262 2005 MS DEPARTMENT OF ENVIRONMENTAL QUALITY N MDEQ Dam Safety WAUPEE DAM WI L Failure 07/14/2020 Hydrologic/Flooding Erosion Other WI00673-3500 Heavy rains during construction project contributed to issue. Yes 0 0 0 0 Roads $100,000 to $500,000 Dam owner notified sheriff and sheriff checked on D/S properties and notified property owners. 119 F RE F NR 11 ft 562.00 95.00 1944 WI00673 WAUPEE CREEK 45.2317 -88.3805 WIDNR 1 day Yes WIDNR ELM LAKE DAM SD H Non-Failure 07/24/2020 Hydrologic/Flooding Spillway Chute Failure Erosion SD00328-3437 Chute spillway damaged during heavy flow. No 0 Unknown Unknown Unknown S RE RS Y 52 ft 28800.00 1150.00 1937 SD00328 ELM RIVER 45.855 -98.705 2000 DENR Yes DENR Y ORMSBY WI L Failure 07/28/2020 Hydrologic/Flooding Overtopping Erosion WI00691-3501 7+ inch 24 hr rainfall caused dam to overtop, which induced breach of the left embankment. No 0 0 0 0 None $1 to $100,000 125 P PGRE R Y 12 ft 125.00 24.00 1901 WI00691 WEST BRANCH EAU CLAIRE 45.2569 -89.2486 1950 WIDNR 1 day Yes WIDNR PINE GROVE LAKE DAM NY H Non-Failure 08/04/2020 Other Vegetation NY13266-3365 Embankment has extensive trees. High winds caused a tree to fall at the downstream edge of the dam crest. This created a void in the embankment and a crack in the soil around the tree roots, however further examination conluded the cracking was due to earth being pulled away by the roots, not due to dam slope sliding. Remnant of Tropical Storm Isaias No 0 0 0 0 P RE R Y 12 ft 26.00 5.00 1968 NY13266 TR-RAMAPO RIVER 41.16 -74.1778 NYS DEC No NY Dam Safety RUNNING HARE VINEYARD LAKE MD L Non-Failure 08/04/2020 Hydrologic/Flooding Insufficient Spillway Capacity Overtopping Erosion MD00187-3431 Significant headcut from overtoping near left abut TS Isaias No 0 0 0 0 Roads Unknown Lower lake level. Install temporary aggregate berm to stabilize until repaired P RE F NR 20 ft 91.00 6.00 1970 MD00187 CYPRESS SWAMP-TR 38.5047 -76.6134 1970 MD DAM SAFETY 17 days Yes MD Dam Safety PORCHES MILL DAM NJ L Failure 08/07/2020 Hydrologic/Flooding Overtopping Insufficient Spillway Capacity NJ00113-3362 Heavy rainstorm caused overtopping failure of earthen embankment No 0 0 0 0 Roads Unknown 76 P PGRE R NR 20 ft 76.00 18.00 1923 NJ00113 OLDMANS CREEK-TR 39.7001 -75.3319 NJDEP 1 day Investigation NJ Dam Safety IZAAK WALTON PARK DAM VA U Non-Failure 08/15/2020 Hydrologic/Flooding Overtopping VA041039-3396 Heavy rain resulted in overtopping unknown Unknown Unknown X RE R N 20 ft 174.00 0.00 VA041039 37.4758 -77.6294 DEPARTMENT OF CONSERVATION AND RECREATION Yes VA Dam Safety FALLING CREEK RESERVOIR DAM VA H Non-Failure 08/15/2020 Hydrologic/Flooding Overtopping VA041015-3397 Heavy rain resulted in overtopping unknown Unknown Unknown L CB R Y 34 ft 1511.00 92.00 VA041015 FALLING CREEK 37.4618 -77.4655 DEPARTMENT OF CONSERVATION AND RECREATION Yes VA Dam Safety SWIFT CREEK RESERVOIR DAM VA H Non-Failure 08/15/2020 Hydrologic/Flooding Overtopping VA041012-3398 Heavy rain resulted in overtopping unknown Unknown Unknown L RE RS Y 44 ft 50590.00 1660.00 VA041012 SWIFT CREEK 37.4177 -77.648 DEPARTMENT OF CONSERVATION AND RECREATION Yes VA Dam Safety LAKEVIEW VA H Non-Failure 08/15/2020 Hydrologic/Flooding Overtopping Erosion VA570001-3399 Heavy rain resulted in overtopping and erosion outside of concrete wall of embankment unknown Unknown Unknown L CNPG HR Y 39 ft 610.00 38.00 1920 VA570001 SWIFT CREEK 37.2717 -77.4182 1991 Yes VA Dam Safety CENTRAL CROSSING DAM VA L Non-Failure 09/01/2020 Structural Stability Spillway Erosion/Head Cutting VA101026-3400 Concrete spillway undermined and in danger of collapse unknown Unknown Unknown P RE R Y 32 ft 125.00 12.00 VA101026 TRIB TO MUNCUIN CREEK 37.7407 -77.1443 DEPARTMENT OF CONSERVATION AND RECREATION Yes VA Dam Safety JOHNSTOWN CO H Non-Failure 09/25/2020 Manmade Action Accident Or Misoperation Excessive/Increased Seepage CO01772-3449 Yes 0 0 0 0 L RE S Y 16 ft 258.00 34.00 1953 CO01772 BIG THOMPSON RIVER-OS 40.3375 -104.959 DWR 11:50 AM 2 days Yes CO DWR MILLION RESERVOIR CO H Non-Failure 10/07/2020 Seepage/Internal Erosion Excessive/Increased Seepage Overtopping CO00776-3448 USFS Initiated level 2 EAP based on reports of seepage and overtopping. State of CO Engineers mobilized to site and found non-emergency situation. Yes 0 0 0 0 F RE IR Y 25 ft 240.00 0.00 1953 CO00776 DITCH FROM MILL CREEK 37.6226 -106.67 2009 DWR 9:30 AM 3 hours No CO DWR ECHO CANYON CO S Non-Failure 10/20/2020 Structural Stability Cracking CO01055-3450 No 0 0 0 0 S RE FR Y 82 ft 3063.00 118.00 1969 CO01055 ECHO CANYON 37.2074 -107 DWR 9:00 AM 1 month Yes DOUG BRANCH POND VA L Non-Failure 10/30/2020 Structural Stability Spillway Pipe Failure Erosion VA029037-3401 Large void was observed around outlet structure, severe drop in water levels unknown Unknown Unknown S RE R Y 30 ft 32.70 4.00 VA029037 TR-JAMES RIVER 37.6354 -78.7944 DEPARTMENT OF CONSERVATION AND RECREATION Yes VA Dam Safety CHANDLER'S MILL DAM VA S Non-Failure 11/12/2020 Hydrologic/Flooding Overtopping VA193011-3402 4-5" rain event caused overtopping, stage 3 emergency unknown Unknown Unknown S RE R N 15 ft 475.00 0.00 VA193011 38.0974 -76.8484 DEPARTMENT OF CONSERVATION AND RECREATION Yes VA Dam Safety SPOTSWOOD DRIVE DAM VA L Non-Failure 11/12/2020 Structural Stability Excessive/Increased Seepage Erosion Reservoir overfilling VA137015-3403 Severe erosion, partial failure, upstream inundation unknown Unknown Unknown P RE R N 35 ft 270.00 5.00 VA137015 38.3785 -77.7805 DEPARTMENT OF CONSERVATION AND RECREATION Yes VA Dam Safety SPOTSYLVANIA COUNTY DAM #9 VA U Non-Failure 11/30/2020 Deterioration or Poor Condition Excessive/Increased Seepage Spillway pipe failure VA177036-3404 Pipe collapse, seepage unknown Unknown Unknown X NR 30 ft 165.70 13.00 VA177036 38.2208 -77.6859 Yes VA Dam Safety FOOTE POND DAM NH L Non-Failure 01/01/2021 Deterioration or Poor Condition Spillway Riser Failure Sinkhole Excessive/Increased Seepage NH00552-3438 Corroded CMP riser and outlet created sinkhole around the riser and into the embankment. Corroded outlet pipe with increased seepage. 0 0 0 None Unknown Counseled owner on-site to maintain lowered impoundment, LOD to be issued. P RE R NR 16 ft 134.00 16.00 1971 NH00552 TR PAUGUS BAY 43.6097 -71.4888 NHDES DAM BUREAU No NHDES DAM BUREAU Double U Fish Ranch CA H Non-Failure 02/04/2021 Seepage/Internal Erosion Excessive/Increased Seepage Slope Stability CA10414-3425 Illegally constructed dam. During filling, there was a slope failure. Seepage was observed through the embankment fill where the slope failure occurred. Owner was directed to dewater the reservoir. A siphon was installed and water stored was removed. No 0 0 0 0 None None P RE O N 21 ft 90.00 0.00 2019 CA10414 Pit River-TR 41.4555 -120.901 DWR, Safety of Dams Yes CA DSOD SCOTIA LOG POND CA H Non-Failure 02/04/2021 Seepage/Internal Erosion Excessive/Increased Seepage CA00504-3434 Owner reported seepage at the toe of the dam. Investigation found decayed stumps in the area where seepage was observed. No 0 0 0 0 None None Reservoir elevaiton lowered back to its restricted elevation, 2.7' below the drop inlet spillway. L RE ST N 24 ft 210.00 30.00 1910 CA00504 TR EEL RIVER 40.4786 -124.108 DWR, SAFETY OF DAMS Yes CA DSOD STRUM WI L Failure 02/06/2021 Malfunction of Equipment/Gate Gate/Valve Failure WI00210-3499 Stoplogs in in right bay broke and caused uncontrolled flow. Likely due to ice damage. No 0 0 0 0 None $1 to $100,000 100 L PGRE CR Y 19 ft 430.00 54.00 1937 WI00210 BUFFALO 44.5548 -91.3923 WIDNR 1 day Yes WIDNR PANBOWL LAKE KY S Non-Failure 03/02/2021 Hydrologic/Flooding Excessive/Increased Seepage Slope Stability KY00108-3457 Slope failure due to seepage from river back into reservoir due to high river levels No Unknown Unknown Unknown S ER R Y 46 ft 6200.00 98.00 1961 KY00108 N. FORK KENTUCKY RIVER 37.5584 -83.3696 KY DIVISION OF WATER Yes KY Dam Safety Lauderdale - Meridian - Hwy 19 NOI MS S Failure 03/25/2021 Deterioration or Poor Condition Overtopping Vegetation Animal Activity MS00000-3492 Dam overtopped, dozens of animal burrows, activated spillway with erosion during heavy rain. N 0 0 0 0 0 0 32 RE R 0.00 MS00000 32.3658 -88.6514 MS DEPARTMENT OF ENVIRONMENTAL QUALITY 6:30 PM N MDEQ Dam Safety Hinds - Clinton - Linda Drive NOI MS L Non-Failure 03/29/2021 Seepage/Internal Erosion Excessive/Increased Seepage MS00000-3491 Seepage in two locations on downstream slope. N 0 0 0 0 0 0 HOA bringing in contractor to address repairs. RE R No 0.00 MS00000 32.3631 -90.3247 MS DEPARTMENT OF ENVIRONMENTAL QUALITY Y MDEQ Dam Safety Klepzig Lake Dam MS L Non-Failure 03/30/2021 Deterioration or Poor Condition Excessive/Increased Seepage MS00000-3489 Multiple areas of flow coming through dam, owner instructed to contract for repair. N 0 0 0 0 0 0 RE F No 0.00 MS00000 0 0 MS DEPARTMENT OF ENVIRONMENTAL QUALITY N MDEQ Dam Safety SUNNY LAKE DAM OH L Non-Failure 04/01/2021 Deterioration or Poor Condition Spillway Pipe Failure Sinkhole OH00673-3451 Sinkhole over principal spillway No Sent staff several times. Owner was able to draw the water level down and eventually replace the spillway. L RE R N 10 ft 350.00 63.00 OH00673 TRIBUTARY TO AURORA BRANCH OF CHAGRIN RIVER 41.2981 -81.3153 DEPARTMENT OF NATURAL RESOURCES 2-3 days No OH Dam Safety ALBRITTON LAKE DAM MS L Non-Failure 04/05/2021 Hydrologic/Flooding MS03326-3474 Conduit became clogged. Caused dam to overtop, eroding downstream slope around the outlet. N 0 0 0 0 0 0 Directed owner to clear debris, repair erosion. 0 P RE R NR 33 ft 1369.00 80.00 1995 MS03326 UNT OF MILL CREEK 30.9822 -89.6875 MS DEPARTMENT OF ENVIRONMENTAL QUALITY N MDEQ Dam Safety MS05688 LAKE DAM MS L Non-Failure 04/06/2021 Hydrologic/Flooding MS05688-3481 Headcutting at the auxilary spillway approx. 30 feet from the dam. The headcut is approx. 15 feet deep. N 0 0 0 0 0 0 Owner directed to take actions to lower water level in dam to dry spillway so a contractor can backfill and repair. P RE R NR 18 ft 235.00 19.00 MS05688 34.5871 -89.3807 MS DEPARTMENT OF ENVIRONMENTAL QUALITY Y MDEQ Dam Safety Fogg Rd. Dam MS L Non-Failure 04/06/2021 Hydrologic/Flooding Overtopping Debris Clogging Animal Activity MS00000-3490 Dam was over topping and the spillway was blocked by a beaver dam. N 0 0 0 0 0 0 R, F No 0.00 MS00000 0 0 MS DEPARTMENT OF ENVIRONMENTAL QUALITY N MDEQ Dam Safety HALL LAKE MS02054 DAM MS L Non-Failure 04/16/2021 Deterioration or Poor Condition Spillway Pipe Failure Vegetation MS02054-3469 5 ft CMP failed creating sinkhole in dam. State required a controlled breach. N 0 0 0 0 0 0 MDEQ ER team brought in contractors to lower lake level and do a controlled breach of dam. P RE R NR 14 ft 280.00 0.00 MS02054 30.8412 -89.0682 MS DEPARTMENT OF ENVIRONMENTAL QUALITY N MDEQ Dam Safety MS04127 LAKE DAM MS U Non-Failure 04/16/2021 Hydrologic/Flooding MS04127-3477 Undersized Aux clogged with vegetation, lead to overtopping. Flow caused headcut below outfall. N 0 0 0 0 0 0 Directed owner to clear and widen aux. spillway. 0 P RE R NR 10 ft 79.00 12.00 MS04127 30.6417 -89.7075 MS DEPARTMENT OF ENVIRONMENTAL QUALITY N MDEQ Dam Safety J F JACKSON LAKE DAM MS L Non-Failure 04/18/2021 Deterioration or Poor Condition MS03414-3475 Sinkhole formed over collapsed 18-in PVC conduit during heavy rain. N 0 0 0 0 0 0 Directed owner to have conduit replaced. P RE R NR 15 ft 226.00 23.00 1998 MS03414 UNT OF WALNUT CREEK 32.5909 -89.929 MS DEPARTMENT OF ENVIRONMENTAL QUALITY N MDEQ Dam Safety DRY CREEK DIVERSION ID L Non-Failure 04/24/2021 Unknown Unknown ID00544-3493 The failure of a diversion canal resulted in an uncontrolled release of water from a High Hazard Dam; however, the dam itself suffered no damages. Had the uncontrolled release of water not been stopped, it is possible the erosive head-cut in the canal would have migrated into the reservoir. The canal breach was not witnessed during its initial failure; therefore, the mechanism(s)
responsible for failure must necessarily be speculated. No 0 0 0 Roads Unknown P RE I NR 35 ft 77.00 6.00 1976 ID00544 DRY CREEK 44.0864 -116.553 2014 IDWR Yes IDWR Y LAKE TIAK O KHATA MS H Non-Failure 05/01/2021 Manmade Action Slope Stability Accident or Misoperation MS00189-3461 Work was being done on the upstream slope for seepage; unstable crest slope began to slough away. N 0 0 0 0 0 0 P RE R Y 33 ft 650.00 64.00 1954 MS00189 UNT OF HUGHES CREEK 33.0958 -89.0729 2010 MS DEPARTMENT OF ENVIRONMENTAL QUALITY N MDEQ Dam Safety GREEN LAKE DAM TX L Failure 05/19/2021 Unknown Unknown TX06513-3422 https://www.kristv.com/news/local-news/green-lake-dam-collapses-in-portland-following-severe-weather L CNRE IR NR 35 ft 462.00 33.00 1940 TX06513 TR-CORPUS CHRISTI BAY 27.88 -97.2917 TCEQ TX Dam Safety WAXHOMA OK H Failure 05/19/2021 Seepage/Internal Erosion Spillway Chute Failure OK10731-3494 Spillway chute constructed on fill undermined. Spillway chute collapsed on upstream side Yes 0 0 0 0 Other USACE supplied high capacity pump, city and county placed rock in void to slow failure Unknown L RE S Y 50 ft 2900.00 140.00 1955 OK10731 TR-DOG THRESHER CR 36.554 -96.1164 OWRB Investigation OWRB WARZYN WI L Failure 05/20/2021 Deterioration or Poor Condition Spillway Pipe Failure WI00970-3502 Impounded water flowed through corroded joint at riser/outlet interface. Yes 0 0 0 0 None $1 to $100,000 Owner notified downstream neighbor immediately. 30 P PGRE R N 25 ft 100.00 6.00 1974 WI00970 URNUS CREEK 42.9096 -89.9476 WIDNR 1 day Yes WIDNR LAKE TARA DAM MS H Non-Failure 06/09/2021 Hydrologic/Flooding Spillway Pipe Failure MS03104-3473 Failed CMP conduit caused sinkhole in the crest of the dam during 18 in/36 hr rainfall event. Y 0 50 20 0 0 0 County and state used siphons to lower lake level until conduit was replaced. P RE R Y 20 ft 46.00 5.00 1985 MS03104 UNT OF TOBY TUBBY CREEK 34.4079 -89.5555 MS DEPARTMENT OF ENVIRONMENTAL QUALITY N MDEQ Dam Safety PELUCIA WATERSHED STRUCTURE Y-33A-01 DAM MS L Non-Failure 06/10/2021 Deterioration or Poor Condition MS01593-3465 Headcut advancing in the auxiliary spillway - will eventually cut through crest to breach the lake. N 0 0 0 0 0 0 Notified drainage district and NRCS of erosion to repair. 1900 L RE C N 42 ft 2052.00 116.00 1964 MS01593 TR- PELUCIA CREEK 33.4602 -89.9398 MS DEPARTMENT OF ENVIRONMENTAL QUALITY 9:30 PM N MDEQ Dam Safety MS04059 LAKE DAM MS L Failure 06/25/2021 Deterioration or Poor Condition Vegetation Animal Activity Foundation Deficiency MS04059-3476 The dam failed in the center, near the high point of the dam. Unable to identify specific failure mode. N 0 0 0 0 0 0 160 P RE R NR 11 ft 225.00 31.00 MS04059 30.7187 -89.5491 MS DEPARTMENT OF ENVIRONMENTAL QUALITY Night Y MDEQ Dam Safety LAKE FOREST ESTATES DAM OH S Non-Failure 07/01/2021 Deterioration or Poor Condition Spillway Riser Failure Sinkhole OH02447-3454 Sinkhole around spillway riser. Poor connection between riser and low flow inlet No P RE R Y 21 ft 58.00 2.00 OH02447 TRIBUTARY TO BRANDYWINE CREEK 41.2875 -81.4819 DEPARTMENT OF NATURAL RESOURCES Yes OH Dam Safety Buckeye Water District Reservoir II OH H Non-Failure 07/01/2021 Seepage/Internal Erosion Excessive/Increased Seepage OH03216-3455 Excessive Seepage upon first filling No Owner added toe drain and interior clay liner L RE S Y 38 ft 8035.00 4.00 2020 OH03216 Stream Little Yellow Creek-OS 40.6394 -80.6786 DEPARTMENT OF NATURAL RESOURCES 6 months Yes OH Dam Safety TUSCARAWAS RIVER DIVERSION DAM OH H Non-Failure 07/08/2021 Seepage/Internal Erosion Other OH00485-3453 Cloudy flow from drain under RCC overtopping protection No S RE R Y 26 ft 1740.00 83.00 1956 OH00485 TUSCARAWAS RIVER 41.0117 -81.515 DEPARTMENT OF NATURAL RESOURCES 1 day No OH Dam Safety FOREST LAKE DAM NH L Non-Failure 07/18/2021 Hydrologic/Flooding High Reservoir Level Overtopping Erosion NH00297-3442 Heavy rainfall resulted in overtopping of the dam causing erosion adjacent to the concrete spillway 0 0 0 0 None Unknown Dam was sandbagged until waters receeded P REST R NR 8 ft 378.00 93.00 1925 NH00297 TR ASHUELOT RIVER 42.7988 -72.3697 NHDES DAM BUREAU 2 days Yes NHDES DAM BUREAU SILICA POND DAM NH S Non-Failure 07/18/2021 Hydrologic/Flooding High Reservoir Level Overtopping Insufficient Spillway Capacity NH01098-3445 Overtopping along the right-side portion of the dam. 0 1 None Unknown L RE R NR 9 ft 29.00 3.00 1935 NH01098 Unnamed 42.8227 -72.1869 NHDES 1 day NHDES MILLET SWALE AZ H Failure 07/24/2021 Malfunction of Equipment/Gate High Reservoir Level Piping Animal Activity AZ00059-3492 Heavy, localized monsoon activity resulted in rapid inflow to the reservoir. Continuous leak erosion/piping possbly along a defect in the embankment such as a crack or animal burrow. No corrective actions were taken at the dam when the leak was first detected. The gate was not completely open and is believed to have malfunctioned. A leak was observed from the lower portion of the downstream slope which eventually developed into a full breach, approximately 50-60 feet wide. No 0 Unknown Unknown Unknown Unknown Unknown Dam owner did not notify the State agency of the leak at the downstream face. State employee from the area heard about the incident and the State contacted the owner who confirmed the leak from the dam. State agency was notified in the evening of July 25, 2021 of full breach of the dam. 990 P RE CI N 35 ft 2800.00 125.00 1958 AZ00059 MILLET SWALE 34.4306 -110.041 ADWR 7:00 PM Hours No ADWR VILAS POOL DAM NH S Non-Failure 07/29/2021 Hydrologic/Flooding High Reservoir Level Overtopping Insufficient Spillway Capacity NH00009-3439 Left abutment wall overtopped during excess rainfall event and flowed down state road. Down slope flood waters re-entered the downstream channel and eroded the roadway and bank. Unknown Unknown Unknown Unknown Roads Unknown L CN R Y 31 ft 72.00 6.00 1925 NH00009 COLD RIVER 43.1536 -72.3488 NHDES DAM BUREAU 2 days Unknown NHDES DAM BUREAU MEADOW LAKE DAM NH L Non-Failure 07/29/2021 Deterioration or Poor Condition Spillway Riser Failure Sinkhole Spillway Pipe Failure NH00519-3440 Corroded CMP riser and outlet created sinkhole around the riser and into the embankment. Corroded low-level outlet pipe with increased seepage. 0 0 0 None Unknown Emergency oulet was initially installed. Corroded low-level outlet failed some time after resulting in pond loss. Currently repair design is ongoing through consultant. Impoundment is lowered until repairs can be made. S RE R NR 14 ft 105.00 18.00 1975 NH00519 LAMPREY RIVER 43.201 -71.2054 1991 NHDES DAM BUREAU Yes NHDES DAM BUREAU UPPER SHAKER LAKE DAM OH H Non-Failure 07/29/2021 Deterioration or Poor Condition Spillway Pipe Failure Sinkhole OH00353-3452 Sinkhole over principal spillway No Sent staff to observe sinkhole. Dam was already drained from previous incidents. Directed owner to partially breach dam until dam can be brought into full compliance. L RE R Y 30 ft 155.00 11.00 1852 OH00353 DOAN BROOK 41.4831 -81.5606 DEPARTMENT OF NATURAL RESOURCES 2-3 days No OH Dam Safety ASHUELOT POND DAM NH S Non-Failure 07/30/2021 Hydrologic/Flooding High Reservoir Level NH00237-3443 Heavy rainfall resulted in water levels at the top of the dam. Yes 0 1 0 0 None Unknown L RE R Y 13 ft 3588.00 360.00 1872 NH00237 ASHUELOT RIVER 43.1507 -72.1569 1925 NHDES DAM BUREAU 1 day NHDES DAM BUREAU DILLON CO H Non-Failure 08/17/2021 Malfunction of Equipment/Gate Gate/Valve Failure CO02005-3450 No 0 0 0 0 L RE HRS Y 310 ft 305000.00 3300.00 1963 CO02005 BLUE CREEK 39.6217 -106.062 DWR 11:00 AM 2 hours No Afton Drive/Chappell Creek Dam VA U Failure 08/19/2021 Deterioration or Poor Condition Erosion Overtopping VA149027-3496 0 P RE F N 7 ft 103.70 9.00 VA149027 Chappell Creek 37.2835 -77.2109 DEPARTMENT OF CONSERVATION AND RECREATION BISHOP CREEK DAM NV H Non-Failure 08/31/2021 Seismic Other Debris Clogging NV00050-3435 Magnitude 4.7 earthquake approximately ## miles to the south shook most the upstream concrete face off of the dam and collapsed the outlet control structure. Debris from damage is blocking the approach to the outlet. No State employees made a site visit the following day (9/1) to investigate dam. P CNRE CIR Y 80 ft 28250.00 930.00 1912 NV00050 BISHOP CREEK 41.2556 -114.913 NEVADA DWR 11:21 No Volvo Hagerstown Swm MD S Non-Failure 09/01/2021 Hydrologic/Flooding Debris Clogging Insufficient Spillway Capacity Overtopping MD00581-3433 Undersized spillway, partially plugged, resulted in minor overtopping and emergency response Hurricane Ida Yes 0 Unknown 1 0 Unknown Emergency pumping and partial removal of riser to clear blockage P RE C Y 10 ft 48.00 0.00 1961 MD00581 Antietam Creek-TR 39.675 -77.723 MD Dam Safety 4:51 PM Yes MD Dam Safety Riondas (Flamms) Pond Dam NJ L Non-Failure 09/03/2021 Hydrologic/Flooding Overtopping NJ00000-3429 Inspection performed by NJ Dam Safety on September 3, 2021 revealed overtopping of dam embankment occurred causing significant erosion of downstream embankment slope and portion of crest. TS Ida Unknown Unknown Unknown Unknown Lake has been drained and temporary armored channel has been cut through embankment as interim measure until permanent repair or decommissioning can be completed. P RE R NR 10 ft 2.00 0 NJ00000 Hackensack River 40.945 -73.948 NJDEP NJDEP LONG LAKE DAM AK L Non-Failure 09/27/2021 Malfunction of Equipment/Gate Gate/Valve Failure AK00044-3459 A log damaged flashboards causing an overtopping event No 0 0 0 Unknown Dam owner repaired the flashboards U CNPG H NR 30 ft 147000.00 1375.00 1973 AK00044 LONG RIVER 58.1667 -133.733 AKDNR Yes AKDNR WEST RESERVOIR DAM OH H Non-Failure 10/01/2021 Seepage/Internal Erosion Excessive/Increased Seepage Other OH00585-3456 Seepage coming out around spillway side wall due to clogged underdrain outlet No Owner cleaned out spillway drain and seepage around spillway side wall stopped S RE S Y 22 ft 8796.00 900.00 1840 OH00585 TRIBUTARY TO TUSCARAWAS RIVER 40.9978 -81.5439 DEPARTMENT OF NATURAL RESOURCES 1 day No OH Dam Safety EASTON WI L Failure 10/07/2021 Malfunction of Equipment/Gate Debris Clogging Gate/Valve Failure WI00093-3498 Firewood stuck in gate resulted in cracked gate pedestal and damage to gate and frame. Drained lake. No 0 0 0 0 None $1 to $100,000 130 L PGRE R Y 20 ft 305.00 24.00 1855 WI00093 CAMPBELL CREEK 43.839 -89.8064 1909 WIDNR 1 day Yes WIDNR MONTELLO WI L Non-Failure 10/13/2021 Structural Stability Erosion Foundation Deficiency Settlement WI01015-3503 Training wall downstream of gates consisting of dry-laid stone blocks exhibiting settlement. No 0 0 0 None None Owner reduced flow through gates; DNR issued order for repair. S OTPG O Y 13 ft 19000.00 2210.00 1922 WI01015 FOX 43.7857 -89.3287 WIDNR 1 day Yes WIDNR Ledoux Dam NH L Non-Failure 11/05/2021 Seepage/Internal Erosion Excessive/Increased Seepage Animal Activity Vegetation NH01058-3444 Owner noted concentraed leakage midslope. 0 0 0 0 None Unknown Pond was pumped down until embankment could be repaired. P RE R NR 11 ft 9.00 1.00 1936 NH01058 Unnamed 43.0177 -71.4263 NHDES 26 days Yes NHDES GLEN LOCH WI H Non-Failure 12/15/2021 Deterioration or Poor Condition Other WI00034-3497 Plug in abandoned 24-inch wasteway pipe failed. Yes 0 0 0 None None Owner notified Emergency Management and DNR that they were monitoring. L PG RS Y 37 ft 1000.00 45.00 1875 WI00034 DUNCAN CREEK 44.9569 -91.3998 1959 WIDNR 1 day Yes WIDNR TWAIN HARTE CA S Non-Failure 12/23/2021 Other Abutment Failure CA00649-3424 Reports of a single loud popping sound heard at the dam site. Potential new occurrence of rock exfoliation of the dam's abutments and foundation. Two dam inspections were conducted from which no signs of recent movement or distress of the dam, abutments, or foundation were observed. Also no new signs of rock exfoliation in the abutments and foundation. Reviewed of our files and recent survey data No 0 0 0 0 None None P MV RS N 36 ft 143.00 12.00 1928 CA00649 UNNAMED CREEK 38.0291 -120.244 DWR, SAFETY OF DAMS Yes CA DSOD LAKE MONROE DAM VA H Failure 01/05/2022 Deterioration or Poor Condition Spillway Pipe Failure Spillway Riser Failure VA099006-3493 0 5 0 5 homes evacuated P RE R Y 41 ft 607.00 25.00 VA099006 TR-KEYS RUN 38.2694 -77.2068 DEPARTMENT OF CONSERVATION AND RECREATION DEPARTMENT OF CONSERVATION AND RECREATION LAKE MONROE DAM VA H Failure 01/05/2022 Deterioration or Poor Condition Spillway Riser Failure VA099006-3545 Pipe Collapse: Around 10:30 AM the water level began declining at the dam and a stake was place around 1:30 PM. It was determined that the elbow in the riser pipe likely ruptured around 36' below normal pool. Flows between 2/3 and full diameter were observed coming out of the outfall pipe. Five households were evacuated. Road below dam was coned off and dam downstream was notified. Yes 0 Unknown 5 0 Five households were evacuated. Road below dam was coned off and dam downstream was notified. P RE R Y 41 ft 607.00 25.00 VA099006 TR-KEYS RUN 38.2694 -77.2068 DEPARTMENT OF CONSERVATION AND RECREATION 10:30 Unknown CHANDLER'S MILL DAM VA S Failure 01/17/2022 Deterioration or Poor Condition Erosion Overtopping VA193011-3494 0 S RE R N 15 ft 475.00 0.00 VA193011 38.0974 -76.8484 DEPARTMENT OF CONSERVATION AND RECREATION DEPARTMENT OF CONSERVATION AND RECREATION CHANDLER'S MILL DAM VA S Failure 01/17/2022 Manmade Action Other VA193011-3543 Partial Failure: Received at text at 3:43 pm from John Fogg Dam Safety Program Manager at Dept. of Wildlife Resources that a steel sheet pile broke loose at Chandler Mill Dam causing a controlled impoundment breach-release. A stage III was called VDEM, NWS, VDOT and Westmoreland and Richmond County Emergency Management were notified along with DCR. Photos sent. Site is active construction site and equipment is high and dry. Contractor on site Yes 0 Unknown Unknown 0 A stage III was called VDEM, NWS, VDOT and Westmoreland and Richmond County Emergency Management were notified along with DCR. S RE R N 15 ft 475.00 0.00 VA193011 38.0974 -76.8484 DEPARTMENT OF CONSERVATION AND RECREATION 15:30 Unknown VA Dam Safety Courtney Millpond Dam VA U Failure 01/21/2022 Hydrologic/Flooding Unknown VA133005-3548 Total Failure: a report from Nancy Demorest indicates dam has failed and contributing sediment to waterways. No 0 0 0 0 P RE R N 8 ft 170.40 23.00 0 VA133005 Mill Creek 37.9988 -76.5733 DEPARTMENT OF CONSERVATION AND RECREATION Unknown VA Dam Safety IRIS LAKE DAM EAST GA L Failure 02/04/2022 Unknown Unknown GA01563-3426 Dam failed completely near PSP. No 0 0 0 0 Roads $1 to $100,000 220 P RE R NR 27 ft 292.50 21.00 1960 GA01563 UNKNOWN 33.4006 -84.1161 GA-SAFE DAMS PROGRAM 1 day No GA-SAFE DAMS PROGRAM IRIS LAKE DAM EAST GA L Failure 02/04/2022 Seepage/Internal Erosion Piping GA01563-3525 The dam failed as it was being refilled after maintenance repairs. No 0 0 0 0 Bridges, Roads $100,000 to $500,000 200 P RE R NR 27 ft 292.50 21.00 1960 GA01563 UNKNOWN 33.4006 -84.1161 GA-SAFE DAMS PROGRAM No GA Safe Dams LAKE ASHBURTON MD H Non-Failure 02/07/2022 Other Other MD00108-3540 Water supply piping at toe of dam began to leak causing internal erosion and sinkhole at the embanment toe. Yes 0 0 0 Unknown Unknown Reluctance to activate EAP L REER S Y 40 ft 750.00 25.00 1910 MD00108 OFFSTREAM-GWYNNS RUN 39.3192 -76.6688 1910 MD DAM SAFETY 4 months Unknown MD Dam Safety INTREPID POTASH SOUTH PERIMETER DAM NM S Non-Failure 02/09/2022 Structural Stability Slope Stability NM00698-3530 Experienced localized downstream slope failure on 2/9/2022 but dam did not fail. P RE T N 29 ft 70.00 54.00 NM00698 PECOS RIVER-TR 32.4843 -103.792 OFFICE OF THE STATE ENGINEER NM Dam Safety WOODBERRY DAM VA U Failure 02/27/2022 Seepage/Internal Erosion Unknown VA145007-3544 Total Failure: apparent sunny day slow failure No 0 Unknown Unknown 0 X RE R N 22 ft 189.00 0.00 VA145007 JONES CREEK (IN) TO NORWOOD CREEK (OUT) 37.5875 -77.7774 DEPARTMENT OF CONSERVATION AND RECREATION Unknown VA Dam Safety MCIVER DAM VA U Non-Failure 03/18/2022 Deterioration or Poor Condition Erosion Spillway Pipe Failure VA065006-3546 Partial Failure: RE visited site to observe the reported refilling of the lake (previously dam was not holding water based on all accounts and historical google earth imaging). RE noted that the dam was in extremely poor condition and the water level has receded very little since the owner engineer visited on 3/18/22. Significant sloughing into the crest near where the outlet works would have been, sloughing on downstream toe at outfall. Approximately 20' was outfill pipe was exposed and disconnected. Significant flow was exiting and around the outfall, muddy. Evidence that the emergency spillway had been activiated recently with significant erosion on the downstream embankment in the area of the emergency spillway. Dam is covered with mature trees. Widespread evidence of beaver activity. No 0 0 0 $100,000 to $500,000 DCR worked with Fluvanna County and their contractors to dewater and decommission dam that possed an imminent failure risk. DCR reimbursed the locality for expenses and a legal demand for expenses was issued to the dam owner. P RE R N 23 ft 93.00 0.00 1969 VA065006 SPRING GARDEN CREEK 37.7263 -78.2871 DEPARTMENT OF CONSERVATION AND RECREATION VA Dam Safety MCIVER DAM VA U Failure 03/21/2022 Deterioration or Poor Condition Spillway Pipe Failure Spillway Riser Failure VA065006-3495 0 P RE R N 23 ft 93.00 0.00 1969 VA065006 SPRING GARDEN CREEK 37.7263 -78.2871 DEPARTMENT OF CONSERVATION AND RECREATION DEPARTMENT OF CONSERVATION AND RECREATION LOWER STEVE CREEK WI L Failure 03/25/2022 Seepage/Internal Erosion Piping WI00650-3579 A member of the public noticed seepage occurring through the left earthen embankment near the spillway but not directly adjacent to the outlet pipe. They also noticed that the embankment was sagging/slumping above seepage location. Yes 0 0 0 0 Roads $1 to $100,000 S RE R Y 7 ft 150.00 40.00 1962 WI00650 STEVE CREEK 45.3972 -90.6176 WIDNR WI Dam Safety OXBO FLOWAGE WI Failure 04/06/2022 Seepage/Internal Erosion Piping WI01274-3578 Piping occurred around temporary culvert outlet. Soil over culvert collapsed. Partial failure. Yes 0 0 0 0 $1 to $100,000 0 ft 0.00 0.00 0 WI01274 0 0 WI Dam Safety Sibley 34 MN L Failure 04/11/2022 Seepage/Internal Erosion Erosion Excessive/Increased Seepage Piping MN01847-3524 Upon inspection, failure was noted. Piping led to erosion which led to failure of the left abutment. No 0 0 0 0 None Unknown L OT C NR 14 ft 132.00 0.00 1965 MN01847 South Branch Rush River 44.4619 -94.1772 2019 MNDNR EWR No MN Dam Safety COCHNEWAGON ME S Non-Failure 04/13/2022 Seepage/Internal Erosion Sinkhole ME00314-3519 Sinkhole reported, did not increase in size, under remediation. No 0 0 0 None Unknown Dam inspector inspected. Owners hired engineer firm to draft repair plans. L CN HRS Y 9 ft 1590.00 403.00 1900 ME00314 MUD MILLS STREAM 44.2397 -70.0377 1962 MEMA Yes MEMA WESO CREEK WI L Failure 04/19/2022 Seepage/Internal Erosion Piping WI00649-3577 Sinkhole was observed over the downstream side of the whistle tube. Orders were written to drawdown the impoundment until dam is repaired or removed. No 0 0 0 0 $1 to $100,000 L RE R Y 9 ft 1760.00 480.00 1960 WI00649 WESO CREEK 45.0961 -88.457 WIDNR WI Dam Safety O'BRIEN LAKE DAM OH L Non-Failure 04/22/2022 Deterioration or Poor Condition Spillway Pipe Failure Sinkhole Erosion OH00398-3534 CMP principal spillway riser failed and caused a sinkhole on the upstream slope and erosion into the crest. Outlet pipe was also severally deteriorated and there was a large erosion scrap on the downstream slope that almost reached the crest. The operability of the lake drain was unknow plus it could not be accessed due to the amount of water going into the riser. A channel was excavated into the emergency spillway to lower the water level by 4 feet. Once the water level was lowered to this elevation windows in the riser were cut out to completely drain the lake. The lake drain was eventually operated and opened completely. No 0 0 0 None No EAP but local officials were notified. The dam owner was very cooperative. They were able to get a contractor on site relatively quickly and agreed with our plan of action. The County SWCD office keeped us up-to-date with the progess after the initial emergency was over. P RE R N 24 ft 168.00 20.00 1968 OH00398 TRIBUTARY TO THREE BROTHERS CREEK 41.6575 -80.7983 DEPARTMENT OF NATURAL RESOURCES 2 weeks Yes OH Dam Safety LAKE KIMBLE DAM TX L Failure 04/24/2022 Unknown Piping TX03743-3423 Spillway failed and lake drained. Probably piping failure as there has been a history of undermining and loss of material. No loss of life and no reported property damage 0 None None P RE R NR 23 ft 500.00 119.00 1964 TX03743 KIMBALL CREEK 30.511 -94.4396 TCEQ TX DEP MARION CITY DAM KY S Non-Failure 04/27/2022 Seepage/Internal Erosion Piping KY00133-3521 No 0 0 0 L RE S NR 28 ft 804.00 51.00 1964 KY00133 CROOKED CREEK 37.3024 -88.0906 KY DIVISION OF WATER Yes KY Dam Safety BOURBANIS DAM ND S Non-Failure 05/01/2022 Hydrologic/Flooding Spillway Erosion/Head Cutting ND00083-3557 A late-season snowstorm in mid-April led to snowfall accumulations from 12 inches to 30 inches in the watershed. Spring rains in late April and early May accelerated the snowmelt and added to the runoff volume. Flow through the auxiliary spillway caused a progressing headcut in the grass-lined spillway. Yes Unknown Unknown 0 Roads Unknown Work was done to lower the reservoir and to try to stabilize the headcut. L RE C Y 76 ft 1502.10 9.00 1957 ND00083 TONGUE RIVER-TR 48.7844 -97.9801 1984 NDSWC 2 weeks No ND Dam Safety SALMON LAKE ME S Non-Failure 05/11/2022 Other Other ME00417-3520 Downstream beaver dam backed water up to spillway, fear of gates freezing due to below freezing temps. No 0 0 0 None Unknown Owners talked to downstream resident where the beaver dam was located. Water receeded w/out any damages. L CNPGRE FPR Y 11 ft 4680.00 1158.00 1896 ME00417 MILL STREAM 44.5224 -69.7971 1956 MEMA Yes MEMA NEW WATERSTONE LAKE DAM OH L Non-Failure 05/23/2022 Deterioration or Poor Condition Spillway Riser Failure Sinkhole OH02895-3535 CMP principal spillway riser failed at the bottom of the riser. This developed into a sinkhole and erosion of the upstream slope so that the hole was in direct connect with the lake. Lake completely drained through large hole in the riser. No 0 0 0 None P RE R N 19 ft 83.10 4.00 1997 OH02895 TRIBUTARY TO POLK RUN 39.2917 -84.3036 DEPARTMENT OF NATURAL RESOURCES 1 day Yes OH Dam Safety NEW BEGGS OK S Non-Failure 06/01/2022 Hydrologic/Flooding Insufficient Spillway Capacity Overtopping OK11078-3495 Extreme rainfall event exceeded spillway capacity and overtopped dam, severe erosion on DS slope No 0 0 0 0 Water/sewer lines Unknown City found damage weeks later, a pilot channel was dug in aux spillway to lower reservoir L RE S NR 43 ft 1424.00 54.00 1965 OK11078 TR-ADAMS CREEK 35.742 -96.0256 OWRB Investigation OWRB MT STERLING DAM KY S Non-Failure 06/01/2022 Structural Stability Slope Stability KY00305-3522 No 0 0 0 L RE S NR 61 ft 5265.00 172.00 1960 KY00305 SLATE CREEK 38.0199 -83.8469 KY DIVISION OF WATER No KY Dam Safety LITTLE CHUTE WI S Non-Failure 06/14/2022 Seepage/Internal Erosion Piping WI00779-3576 A sinkhole was observed by FRNSA in the downstream embankment of the navigational channel where the embankment ties into the left side of the lock entrance wall. The hole was approximately 4' diameter and 6' ft deep. No 0 0 0 $1 to $100,000 F PGCN CHNR Y 20 ft 650.00 155.00 1932 WI00779 FOX 44.275 -88.3183 WIDNR WI Dam Safety SILICA POND DAM NH S Failure 07/01/2022 Deterioration or Poor Condition Gate/Valve Failure NH01098-3446 Failure of the low level gate resulted in the release of the impoundment. The release was gradual, and it is understood that downstream economic loss was not inflicted. 0 0 0 0 None Unknown 4 L RE R NR 9 ft 29.00 3.00 1935 NH01098 Unnamed 42.8227 -72.1869 NHDES 1 day NHDES MENASHA DAM WI H Non-Failure 07/19/2022 Seepage/Internal Erosion Piping WI00814-3575 Seepage found at left embankment. Excavated to find source and hit some of the original timber crib/rock. Installed temporary seepage collection system. No 0 0 0 $1 to $100,000 F PGCN CSNFR Y 16 ft 2430000.00 173000.00 1937 WI00814 FOX 44.2 -88.4467 WI Dam Safety PRUITTS DAM VA U Failure 07/22/2022 Deterioration or Poor Condition Spillway Riser Failure Spillway Pipe Failure VA075007-3541 Pipe Collapse: Owner siphoned water level down to discover erosion in vicinity of riser. Probable failure of riser, riser elbow or outlet pipe. Corrogated metal pipe riser developed signficant holes that drained the pond. Date of failure is estimated to be late spring of 2022. No known risks to embankment that may cause breach failure of dam. No 0 0 0 0 P RE R Y 26 ft 180.00 15.00 1968 VA075007 TR-BIG LICKING HOLE CREEK 37.7873 -77.9736 DEPARTMENT OF CONSERVATION AND RECREATION Unknown VA Dam Safety SILVER LAKE DAM - MIDDLETOWN DE H Non-Failure 07/27/2022 Seepage/Internal Erosion Piping Sinkhole Excessive/Increased Seepage DE00051-3531 On 7/27/2022 a sinkhole was discovered on the upstream slope adjacent to the right winwall of 1 of the bridge/spillway structures (this dam has two bridges with gates on the upstream side and a smaller culvert with boards on the upstream side) with an active boil on the downstream side of the dam. The piping/voids were under the bridge slab. The road was closed, the pond level was lowered and immeadiate measures including a liner and large sand sacks were placed on the upstream seepage entry point to prevent progression. Permanent repairs included flowable fill to fill the sinkhole and holes were drilled thru the slab to inject flowable fill in the voids under the bridge slab. All trees were clearded along the upstream slope and a sheet pile cutoff and riprap were installed. Yes 0 0 0 Bridges $1 million to $5 million S PGRE R Y 18 ft 591.00 39.00 1945 DE00051 DEEP CREEK 39.438 -75.6934 DNREC No DE Dam Safety MALVERN DAM VA L Failure 07/27/2022 Deterioration or Poor Condition Other VA113011-3542 Pipe Collapse: The original siphon pipe from the 1970's has failed and about 100 - 150 GPM coming out. No 0 Unknown Unknown 0 P RE R Y 34 ft 105.00 14.00 VA113011 TR-DARK RUN 38.3734 -78.2164 DEPARTMENT OF CONSERVATION AND RECREATION Unknown VA Dam Safety MCLEAD FLOOD CONTROL DAM NM S Non-Failure 08/01/2022 Hydrologic/Flooding Overtopping NM00343-3529 Overtopped in Aug 2022 causing erosion of downstream slope but did not breach. L RE C N 25 ft 720.00 70.00 1951 NM00343 MCLEOD & BROADHURST ARROYO 32.7384 -107.257 1993 OFFICE OF THE STATE ENGINEER NM Dam Safety SPROUSE RESERVOIR DAM NV L Failure 08/06/2022 Hydrologic/Flooding Spillway Deficiency Overtopping NV00000-3436 Illegal dam with undersized auxiliary spillway was overtopped after a monsoonal storm rained 10-15 miles up valley from the dam. No 0 0 0 0 Other $1 to $100,000 Owners watched the dam fail and flood their fields. State employees made a site visit the following Monday to investigate dam and failure. 21.5 P RE I NR 12 ft 21.50 5.00 NV00000 DUCKWATER CREEK 38.8497 -115.66 NEVADA DWR No NEVADA DWR EASTHAVEN LAKE DAM MS H Non-Failure 08/24/2022 Hydrologic/Flooding Debris Clogging Overtopping MS05532-3480 Overtopped after the primary spillway clogged and the watershed received ~3-4 inches in 24-hr period. N 0 0 0 0 0 0 P RE R N 16 ft 57.00 6.00 MS05532 32.2844 -89.9745 MS DEPARTMENT OF ENVIRONMENTAL QUALITY N MDEQ Dam Safety Jones Lake Dam MS L Non-Failure 08/24/2022 Hydrologic/Flooding Overtopping MS03657-3483 Overtopped from insufficient spillway capacity. N 0 0 0 0 0 0 P RE R No 0.00 MS03657 UNT OF INDIAN CREEK 0 -90.1275 MS DEPARTMENT OF ENVIRONMENTAL QUALITY N MDEQ Dam Safety JASZEWSKI WI L Failure 08/24/2022 Hydrologic/Flooding Unknown WI00000-3560 Embankment fully washed-out across ravine during heavy rain event. Unknown if failure was caused from piping or overtopping. No 0 0 0 0 $1 to $100,000 P RE G N 30 ft 38.00 0.00 0 WI00000 44.1781 -91.5353 0000 WI Dam Safety CHENIERE BRAKE DAM LA L Failure 08/26/2022 Seepage/Internal Erosion Piping Foundation Deficiency Other LA00009-3558 Piping failure began on Aug. 26, 2022 and complete breach of the embankment occured on Aug. 27, 2022. No 0 0 0 0 None $1 million to $5 million 25000 L RE R NR 25 ft 53000.00 3600.00 1943 LA00009 CHENIERE CREEK 32.4528 -92.1917 LA DOTD 12:00 2 days Investigation LA Dam Safety MS01762-3466">RAYMOND SEWAGE LAGOON DAM MS L Failure 08/30/2022 Hydrologic/Flooding Animal Activity Vegetation Erosion
MS01762-3466 Erosion of backslope due to tailwater conditions and animal activity. Breached area appeared to be a collapsed animal den. N 0 0 0 0 0 0 36 L RE O NR 8 ft 96.00 0.00 MS01762 32.2595 -90.4113 MS DEPARTMENT OF ENVIRONMENTAL QUALITY N MDEQ Dam Safety CHRISTINA ME H Non-Failure 09/02/2022 Other Accident Or Misoperation ME00226-3518 Dam owner opened the dam gates to lower "dewater" the reservoir based on comments by the acting state inspector. Dewater word was used but he meant lower to reduce the impoundment until requested repairs could be made No 0 0 0 Other Unknown None P RE HS NR 30 ft 13900.00 480.00 1967 ME00226 PRESTILE STREAM 46.69 -67.8917 MEMA Unknown MEMA REST LAKE WI H Non-Failure 09/30/2022 Seepage/Internal Erosion Piping WI00211-3574 Void appeared on the upstream side of the left embankment next to the spillway. Void led to an abandoned metal fish lock conduit that was buried in the embankment. No 0 0 0 $1 to $100,000 U PGRE R Y 25 ft 68000.00 4200.00 1925 WI00211 MANITOWISH 46.1385 -89.8854 WIDNR WI Dam Safety GEORGE SCHNOPP ROAD POND DAM MA S Failure 10/15/2022 Deterioration or Poor Condition Other MA03514-3584 Spontaneous failure of primary spillway and adjacent embankments No 0 0 0 1 Roads $1 to $100,000 64 P RE R N 13 ft 64.00 12.00 1970 MA03514 TR-Ashmere Lake 42.4582 -73.0852 State of MA 1 day Investigation MA Dam Safety NESHOTO WI H Failure 10/21/2022 Deterioration or Poor Condition Spillway Pipe Failure WI00153-3573 Sinkhole formed after operating low draw gate. Outlet pipe deteriorated. Yes 0 0 0 0 $1 to $100,000 P PGRE O Y 15 ft 440.00 55.00 1914 WI00153 WEST TWIN RIVER 44.1758 -87.6507 WIDNR WI Dam Safety Country Oaks Dam VA U Failure 11/24/2022 Hydrologic/Flooding Unknown VA029077-3547 Total Failure: RE recieved report from DEQ on 11/30/2022 that the dam had at least partially failed in the early morning hours of 11/24/2022 releasing significant sediment into downstream Holliday Lake State Park. No 0 0 0 0 P RE O N 29 ft 69.70 4.00 0 VA029077 37.4485 -78.6955 DEPARTMENT OF CONSERVATION AND RECREATION Unknown NEW WILTON RESERVOIR DAM NH S Non-Failure 12/05/2022 Deterioration or Poor Condition Under Investigation Excessive/Increased Seepage NH00261-3549 Increased leakage No Unknown Unknown Unknown None Unknown Unknown L RE S Y 24 ft 335.00 22.00 1933 NH00261 STOCKWELL BROOK 42.8422 -71.7711 NHDES DAM BUREAU No NH Dam Safety Y MCCLOUD CA H Non-Failure 12/14/2022 Unknown Other CA00416-3517 Cracked weld observed on 30-inch bypass pipeline - bypass branches off from 7-ft downstream of low level outlet; controlled by 30" butterfly valve guard gate and 24" Howell bunger valve. Crack is ~20" length, from 2 to 5 o'clock, u/s of guard valve flange. Spray of pressurized water from crack. No 0 0 0 None None Owner responded quickly upon noticing the cracked pipe and notified state and federal regulators. A temporary repair was completed 12/28/22. P RE H Y 241 ft 35234.00 520.00 1965 CA00416 MCCLOUD RIVER 41.1309 -122.071 DWR, SAFETY OF DAMS 2 weeks Yes CA DSOD Nissenbaum Dam VT L Failure 12/23/2022 Seepage/Internal Erosion Excessive/Increased Seepage VT00000-3552 Internal erosion along the approximate alignment of the principal spillway outlet barrel that opened up to a sizable pipe and held an intact roof until the pond had been drained. No 0 0 0 0 Other $1 to $100,000 State DSP required an engineered breach be constructed through the embankment and armored until appropriate engineering investigations, design, and permitting could be completed prior to repair construction. 6.9 P RE R NR 41 ft 6.90 1.00 2022 VT00000 TR-Little River/Winooski River 44.5248 -72.7329 No VT Dam Safety LAKE HOPE DAM OH S Non-Failure 01/03/2023 Manmade Action High Reservoir Level OH00072-3536 Had elevated pool during construction. Main spillway was cofferdamed off and there were 4 large siphons running. As part of the construction they had lowered the pool by at least 5 feet and lowered the top of dam as well to accomodated some of the construction. The cofferdam was breached to prevent the dam from overtopping. Yes 0 1 1 Other S RE R Y 34 ft 2461.00 130.00 1939 OH00072 SANDY RUN 39.32 -82.3564 DEPARTMENT OF NATURAL RESOURCES 3 days Yes OH Dam Safety INDIANFORD WI L Non-Failure 01/03/2023 Manmade Action Sinkhole WI00655-3572 Sinkhole discovered behind tailrace retaining wall D/S of powerhouse on west side of river, believed to be partially caused by high flows through the west bay of the powerhouse following completion of planned repairs. No 0 0 0 $1 to $100,000 L PG R Y 13 ft 107000.00 10460.00 1932 WI00655 ROCK 42.8034 -89.0891 WIDNR WI Dam Safety WATERLOO COAL COMPANY DAM OH L Non-Failure 01/23/2023 Deterioration or Poor Condition Spillway Pipe Failure Debris Clogging Erosion OH01823-3537 Entire CMP slant pipe spillway failed due to poor condition and was also clogged with debis. No 0 0 0 None Siphoned the water level down. Dam owner is looking into breaching the dam. S RE R Y 19 ft 51.00 6.00 OH01823 TRIBUTARY TO SYMMES CREEK 38.94 -82.5425 DEPARTMENT OF NATURAL RESOURCES 1 day Yes OH Dam Safety LEISURE LAKE TN H Failure 02/21/2023 Seepage/Internal Erosion Excessive/Increased Seepage Spillway Pipe Failure Other TN07107-3509 Principal spillway was abandoned improperly without engineering oversight. Flow around plug led to failure of old spillway pipe. Portion of upstream slope eroded as a result; lake completely dewatered. No 0 0 0 0 None Unknown Owner notified Safe Dams staff hours after failure. Failure was confined to spillway conduit, so impacts were limited. 50 P RE R Y 33 ft 83.00 6.00 1999 TN07107 TRIBHOUSTON BRANCH 35.0292 -88.2458 TENN SAFE DAMS PRG 1 day Yes TN Safe Dams Y LEISURE LAKE TN H Non-Failure 02/22/2023 Seepage/Internal Erosion Piping Spillway Pipe Failure TN07107-3515 Dam owner altered spillway without approval. Seepage developed around abanonded spillway and led to excessive piping. No 0 0 None Owner notified Safe Dams staff the day after. Notice of Violation issued and dam must remain breached until Engineer submits corretive action plan. P RE R Y 33 ft 83.00 6.00 1999 TN07107 TRIBHOUSTON BRANCH 35.0292 -88.2458 TENN SAFE DAMS PRG 2 days Yes TN Safe Dams Y McDonald Farm Dam TN L Non-Failure 02/27/2023 Seepage/Internal Erosion Other TN00000-3510 Abandoned spillway conduit failed. Seepage around concrete plug and internal erosion led to significant subsidence on the crest and upstream slope. No 0 0 0 0 None Unknown Hamilton County notified Safe Dams 1 day after event. L RE N 0.00 TN00000 35.4271 -85.1073 1 day No TN Safe Dams Y YOUTH CAMP LAKE DAM IN S Non-Failure 03/01/2023 Structural Stability Slope Stability Sliding IN00264-3589 slope failure incident on the lakeward side of the dam Yes 0 0 0 0 Unknown P RE R Y 36 ft 94.00 5.00 1945 IN00264 UNNAMED TRIBUTARY WOLF CREEK 39.1694 -86.0508 IDNR No IDNR DEPERE DAM WI S Non-Failure 03/05/2023 Seepage/Internal Erosion Sinkhole WI00867-3580 Sinkhole formed on the embankment between the lock canal and the main river. It was inline with a large joint in the wall along the navigational canal. Joint was sealed as a repair. F PGCN CHNFR Y 17 ft 10790.00 536.00 1929 WI00867 FOX 44.4483 -88.0633 WIDNR HEADS CREEK RESERVOIR DAM GA H Non-Failure 03/27/2023 Hydrologic/Flooding High Reservoir Level GA01465-3527 The dam was under construction with a new spillway pipe being installed. Coffer dam overtopped. Yes 20 0 Bridges, Roads $1 to $100,000 Bridges/roads were closed during evacuation period. L RE S Y 32 ft 7588.00 300.00 1963 GA01465 HEAD'S CREEK 33.2804 -84.3744 1983 GA-SAFE DAMS PROGRAM No GA Safe Dams LAKE TCHUKOLAHO DAM GA L Failure 03/28/2023 Seepage/Internal Erosion Unknown GA00165-3526 The dam failed shortly after reconstruction after a previous failure. No 0 0 0 0 $100,000 to $500,000 County EMA monitored and noted no impacts downstream. 2000 P RE R NR 16 ft 3054.00 285.00 1959 GA00165 COMMISSIONER CREEK 32.8994 -83.2869 GA-SAFE DAMS PROGRAM 1 day No GA Safe Dams LAKE MILTON DAM OH H Non-Failure 03/29/2023 Other Slope Stability OH00419-3538 Shallow slide on the downstream slope. Set up monitoring locations. No 0 0 0 None Contractor regraded slide area. S RE R Y 53 ft 46605.00 1780.00 1916 OH00419 MAHONING RIVER 41.1272 -80.9778 DEPARTMENT OF NATURAL RESOURCES 1 day Yes OH Dam Safety SWANZY LAKE CA H Non-Failure 03/30/2023 Other Landslide CA00144-3590 Elevated turbidity and groundwater intrusion near a hillside slide away from the dam embankment. No 0 0 0 0 None Reservoir was drained via the owner's sanitary sewer system because the outlet was not functional. L RE S Y 86 ft 107.00 4.00 1931 CA00144 TR CARQUINEZ STR 38.0765 -122.227 DWR, SAFETY OF DAMS 1:00 am Yes CA DSOD DEPERE DAM WI S Non-Failure 04/04/2023 Seepage/Internal Erosion Sinkhole WI00867-3580 Sinkhole formed in the embankment between the right powerhouse and the lock. Dye testing showed seepage from upstream to downstream. Seepage and hole were monitored and it stabilized, repairs were completed in early 2024. F PGCN CHNFR Y 17 ft 10790.00 536.00 1929 WI00867 FOX 44.4483 -88.0633 WIDNR SWEENY POND CREEK WI L Failure 04/17/2023 Hydrologic/Flooding Overtopping WI00622-3570 Overtopped due to significant flooding (snowpack, etc.). The embankment sustained significant damage and eroded the asphalt as well (embankment is also a Town Road). No 0 0 0 0 Roads $1 to $100,000 S RE R Y 7 ft 580.00 47.00 1964 WI00622 SWEENY POND CREEK 45.3947 -91.9486 WIDNR WI Dam Safety OXBO FLOWAGE WI Failure 04/19/2023 Seepage/Internal Erosion Piping WI01274-3569 Piping occurred around temporary culvert outlet. Soil over culvert collapsed. Partial failure. Yes 0 0 0 0 $1 to $100,000 0 ft 0.00 0.00 0 WI01274 0 0 WI Dam Safety ELVA ROLLER MILL WI Failure 04/19/2023 Malfunction of Equipment/Gate Gate/Valve Failure WI10532-3571 The center steel stoplog channel had partially failed. The deformed channel allowed the top three stoplogs in bays #3 and #4 to fall out. Staff opened the mill race to help lower the impoundment. No 0 0 0 0 $1 to $100,000 0 ft 0.00 0.00 0 WI10532 0 0 WI Dam Safety WEATHERSHIELD WI H Non-Failure 04/22/2023 Malfunction of Equipment/Gate Gate/Valve Failure WI00901-3568 A single stoplog failed on the bottom half of the spillway. Owner alerted City emergency response. No known or suspected damage downstream. No 0 0 0 $1 to $100,000 P RE OR Y 13 ft 75.00 11.00 1977 WI00901 TR-BLACK RIVER 45.1511 -90.3374 WIDNR WI Dam Safety LOWER KAUKAUNA WI H Non-Failure 04/24/2023 Seepage/Internal Erosion Piping WI00778-3567 During lock operator training, water levels got higher than normal operation in Kaukauna Lock #3. A sinkhole formed in the embankment to the right of the canal spillway structure. No 0 0 0 $1 to $100,000 X PGRE HNR Y 16 ft 200.00 40.00 1857 WI00778 FOX 44.2798 -88.2556 1940 WI Dam Safety CAREVIC WI L Non-Failure 04/28/2023 Malfunction of Equipment/Gate Gate/Valve Failure WI01219-3566 Stoplog approx. 4 or 5 logs from the top of the riser failed. No 0 0 0 $1 to $100,000 P CN F Y 10 ft 65.00 20.00 WI01219 TRIB. TO DUCK CREEK 43.489 -89.3564 WIDNR WI Dam Safety SILVER CRYSTAL DAM KY S Non-Failure 05/08/2023 Seepage/Internal Erosion Piping KY00019-3523 No 0 0 0 P RE R NR 15 ft 100.00 10.00 1950 KY00019 WILSON CREEK 38.1065 -85.7334 KY DIVISION OF WATER Yes KY Dam Safety PORTNEUF ID H Non-Failure 05/10/2023 Hydrologic/Flooding Spillway Erosion/Head Cutting Spillway Deficiency ID00180-3586 Spillway Failure-severe erosion of the emergency spillway downstream channel and associated
removal of soil materials beneath the existing concrete apron-Snowmelt resulting from above normal winter accumulation 0 P RE Y 55 ft 20504.00 1593.00 1912 ID00180 PORTNEUF RIVER 42.8787 -111.943 1949 IDWR 2 Days Yes ID DWR Y LAKE KATHARINE DAM OH S Non-Failure 05/23/2023 Manmade Action Excessive/Increased Seepage OH00510-3539 Uplift at toe during construction due to excavation of materials at the toe without proper dewatering system installed. Contractor place fill material back into excavation until a proper dewatering system is installed. No 0 0 0 None Contractor place fill material back into excavation until a proper dewatering system is installed. S RE R Y 29 ft 560.00 52.00 1945 OH00510 ROCK RUN CREEK 39.085 -82.6733 DEPARTMENT OF NATURAL RESOURCES 1 day Yes OH Dam Safety FLORA DELL WI Failure 06/06/2023 Deterioration or Poor Condition Excessive/Increased Seepage WI10339-3565 Sinkhole formed on the top of the embankment, approximately 15' in diameter and 10' deep. Department staff inspected next day.. Issued verbal order for draw down via pump or siphon, to temporarily bypass outlet pipe. No 0 0 0 0 $1 to $100,000 0 ft 0.00 0.00 0 WI10339 0 0 WI Dam Safety CATARACT WI Non-Failure 06/22/2023 Seepage/Internal Erosion Sinkhole WI12249-3564 Sinkhole formed on top of the embankment, slightly downstream from the crest, approximately 65’ right of the bridge abutment. The hole was approximately 2.5’ deep x 3’ wide x 5.5’ long. Dye testing performed , no outlet detected. No 0 0 0 $1 to $100,000 0 ft 0.00 0.00 0 WI12249 0 0 WI Dam Safety LECHTENBERG LAMPMAN DAM NE L Failure 06/24/2023 Hydrologic/Flooding Overtopping Insufficient Spillway Capacity NE01629-3606 Heavy rain and flooding overwhelmed the dam's spillways. The dam owner said the dam stared overtopping at about 6:30 a.m. and it failed about 3 hours later. No 0 0 0 0 Roads $1 to $100,000 700 P RE I NR 35 ft 559.50 26.00 1977 NE01629 SPRING CREEK 42.9075 -98.7811 1993 NE DNR 9:30 AM 3 hours No NE DNR OXBO FLOWAGE WI Failure 06/27/2023 Deterioration or Poor Condition Spillway Pipe Failure WI10367-3581 Outlet pipe was observed to be deteriorated and partially collapsed. Embankment material was observed coming through the top of the pipe and there was little material left in the botton. 0 0 ft 0.00 0.00 0 WI10367 0 0 WI Dam Safety SHANNON LAKE DAM NH S Non-Failure 06/28/2023 Hydrologic/Flooding Spillway Erosion/Head Cutting NH00562-3588 erosion of earthen auxiliary spillway No 0 0 0 0 None $1 to $100,000 P RE R N 20 ft 21.00 4.00 1969 NH00562 SHANNON BROOK 43.7322 -71.3225 NHDES DAM BUREAU 1 Day No NH DES FOREST LAKE DAM NH L Failure 07/09/2023 Hydrologic/Flooding Overtopping NH00297-3587 overtopping of earthen dam No 0 0 0 0 None $500,000 to $1 million P REST R NR 8 ft 378.00 93.00 1925 NH00297 TR ASHUELOT RIVER 42.7988 -72.3697 NHDES DAM BUREAU 22:00 1 Day Yes NH DES QUINN LOWER VT L Failure 07/10/2023 Hydrologic/Flooding Unknown VT00383-3551 Remote dam, full failure discovered by post flood rapid inspection team several days after failure. July 2023 Flood No 0 0 0 0 Unknown Unknown 90 P RE NR 14 ft 90.00 8.00 VT00383 HOMER STONE BROOK 43.4182 -72.9319 DEC No VT Dam Safety Lyons Pond Dam VT00000 L Failure 07/10/2023 Hydrologic/Flooding Unknown VT00000-3553 Full failure discovered by post flood rapid inspection team several days after failure. July 2023 Flood No 0 0 0 0 Unknown Unknown 12 P RE R NR 8 ft 12.00 3.00 VT00000 Burndt Meadow Brook 43.2341 -72.8944 VT DSP No VT Dam Safety HANDS MILL VT S Failure 07/10/2023 Hydrologic/Flooding Unknown VT00308-3554 Full failure reported in days immediately following flood event. July 2023 Flood No 0 0 0 0 Unknown Unknown 16 L RE O NR 20 ft 16.00 2.00 1860 VT00308 JAIL BRANCH 44.1054 -72.4298 DEC No VT Dam Safety Clarks Sawmill Dam VT L Failure 07/10/2023 Hydrologic/Flooding Unknown VT00000-3555 Full failure reported in days immediately following flood event. July 2023 Flooding No 0 0 0 0 Unknown Unknown 21 P MSPG O NR 14 ft 21.00 3.00 0 VT00000 Winooski River 44.3911 -72.331 VT DSP No VT Dam Safety SOUTH WOODBURY POND VT S Failure 07/10/2023 Hydrologic/Flooding Unknown VT00311-3556 Partial breach reported in the days immediately following flood event. July 2023 Flood No 0 0 0 0 Unknown Unknown 45 P MSREST R NR 16 ft 45.00 6.00 1875 VT00311 SABIN POND-TR 44.4153 -72.4222 DEC No VT Dam Safety GRIFFITH LAKE DAM DE H Non-Failure 08/16/2023 Seepage/Internal Erosion Piping Spillway Chute Failure DE00043-3532 Active piping issue discovered on 8/16/23. The water level in the pond was lowered and an unsuccessful attempt to fill the voids under the spillway was made. An unsuccessful attempt to fill the voids under the spillway was made. A replacement spillway design is being expedited. S PGRE FR Y 13 ft 310.00 40.00 DE00043 MISPILLION RIVER 38.9112 -75.4648 2006 DNREC DE Dam Safety HORICON WI L Failure 08/18/2023 Deterioration or Poor Condition Foundation Deficiency WI01062-3563 Dye testing performed by DNR staff based on observations by property staff of an apparent boil downstream of the east stoplog bay. No 0 0 0 0 $1 to $100,000 S OTPG O Y 12 ft 20000.00 2500.00 1930 WI01062 MAIN DITCH 43.4462 -88.6311 WIDNR WI Dam Safety KAUKAUNA DAM WI S Non-Failure 08/29/2023 Seepage/Internal Erosion Sinkhole WI00080-3583 Sinkhole observed in Stribley Rd in front of the public library. Sinkhole was aproximately 3 ft deep and 3 ft diameter. Road was shut down and repairs were made by the City 9/1/2023. F CHNSR Y 22 ft 1300.00 234.00 1931 WI00080 FOX 44.2817 -88.2717 WI Dam Safety Lower Slate Lake Back Dam AK S Non-Failure 09/18/2023 Hydrologic/Flooding Overtopping Spillway Deficiency Other AK00320-3593 9/18 a cofferdam protecting AK00320 embankment construction work was overtopped and an partially eroded allowing water to flow freely into the tailings reservoir. Water eroded portions fo the AK00320 construction works. On 10/8 A temporary diversion line failed due to high flows and pressure allowing water to flow freely into the tailings reservoir. Yes P ER T Y 44 ft 910.00 75.00 2024 AK00320 East Fork Slate Creek 58.8136 -135.04 AK DNR 7:00 AM approx 1 month Unknown AK DNR New Jersey No Name # 80 Dam NJ L Failure 10/02/2023 Hydrologic/Flooding Overtopping NJ00000-3592 Intense rain event led to overtopping of unprotected earthen spillway abutment which failed the dam. No 0 0 0 0 P RE I NR 7 ft 0.00 0 NJ00000 Negro Run 40.1758 -75.5676 NJDEP-Dam Safety NJDEP-Dam Safety HASHIMI DAM TX S Failure 10/05/2023 Hydrologic/Flooding Overtopping Spillway Chute Failure TX07436-3528 No loss of life; it appeared that the dam overtopped and there was a spillway failure. 0 P OT O NR 18 ft 63.00 8.00 TX07436 32.4811 -95.4058 TCEQ TX Dam Safety LITTLE CHUTE WI S Non-Failure 10/16/2023 Seepage/Internal Erosion Sinkhole WI00779-3582 Sinkholes were observed in the embankment and navigational canal while drawn down for planned embankment work. F PGCN CHNR Y 20 ft 650.00 155.00 1932 WI00779 FOX 44.275 -88.3183 WIDNR WI Dam Safety SHERWOOD WI L Failure 10/25/2023 Hydrologic/Flooding Overtopping WI00111-3562 Major flooding resulting in overtopping of the embankment and erosion. The road directly downstream also overtopped. No 0 0 0 0 Roads $1 to $100,000 L PGRE R Y 13 ft 600.00 117.00 1936 WI00111 HAY CREEK 44.4262 -90.3693 WIDNR WI Dam Safety BLACK RIVER FALLS WI L Non-Failure 10/31/2023 Hydrologic/Flooding Debris Clogging WI00043-3561 Multiple trees stuck under tainter gate after major flood event. Gate could not fully close. Yes 0 0 0 $1 to $100,000 L CNPG HR NR 18 ft 6270.00 198.00 1912 WI00043 BLACK RIVER 44.2917 -90.8625 WI Dam Safety SENER, JOHN B. WI Non-Failure 11/01/2023 Hydrologic/Flooding Erosion WI11503-3559 The downstream portion of the emergency spillway race, approximately 80 LF, had headcut back towards the embankment. The embankment was not damaged. No 0 0 0 $1 to $100,000 0 ft 0.00 0.00 0 WI11503 0 0 WI Dam Safety NJ No Name No. 140 Dam NJ L Failure 12/17/2023 Hydrologic/Flooding Overtopping NJ00000-3591 Intense rain event led to overtopping of unprotected earthen embankment and failed the dam. No 0 0 0 0 S RE R NR 13 ft 0.00 0 NJ00000 Oldman's Creek-TR 39.6771 -75.2961 NJDEP-Dam Safety NJDEP-Dam Safety TRAP POND DAM DE H Non-Failure 12/25/2023 Deterioration or Poor Condition Spillway Chute Failure DE00017-3533 Spillway slab failure on 12/25/23. The water level in the pond has been lowered and the low level outlet is being used to pass flows. An emergency design to repair the spillway is being done. The water level in the pond has been lowered and the low level outlet is being used to pass flows. An emergency design to repair the spillway is being done. S PGRE R Y 14 ft 4343.00 94.00 1938 DE00017 HITCH POND BRANCH 38.5278 -75.4824 DNREC DE Dam Safety CAMP BRANCH ACRES DAM TX H Non-Failure 04/09/2024 Hydrologic/Flooding Spillway Erosion/Head Cutting TX07192-3605 rains eroded the emergency spillway draining the lake Unknown 0 0 0 unknown Unknown owner contacted TCEQ that the spillway had failed and the reservoir was not holding water, TCEQ inspected P RE R N 22 ft 130.00 4.00 1957 TX07192 UNNAMED TR-TRINITY RIVER 30.8521 -95.2061 2007 TCEQ Yes TCEQ LAKE LIVINGSTON TX H Non-Failure 04/26/2024 Hydrologic/Flooding Spillway Erosion/Head Cutting TX03823-3601 spring rains caused head-cutting erosion in the spillway to progress Texas Severe Storms, Straight-line Winds, Tornadoes, and Flooding (DR-4781-TX) Unknown 0 0 0 unknown Unknown Sandbags were placed, a trench was dug for lowering reservoir, concrete debris placed at erosion gully, TCEQ inspected U Y 90 ft 1750000.00 83000.00 1969 TX03823 TRINITY 30.625 -95.0265 TCEQ Yes TCEQ CALVIN POWELL DAM TX H Non-Failure 04/29/2024 Hydrologic/Flooding Sliding TX07162-3602 slide on the downstream slope, 8 feet deep; seepage Texas Severe Storms, Straight-line Winds, Tornadoes, and Flooding (DR-4781-TX) Unknown 0 0 0 unknown Unknown TCEQ inspected, SWCD lowered reservoir and monitored slide P RE R Y 14 ft 13.10 0.00 TX07162 UN TR-GRAND SALINE CR 32.6819 -95.7145 TCEQ Yes TCEQ SPRING LAKE DAM TX H Non-Failure 05/02/2024 Hydrologic/Flooding Spillway Erosion/Head Cutting TX02958-3603 spring rains caused erosion in the emergency spillways Texas Severe Storms, Straight-line Winds, Tornadoes, and Flooding (DR-4781-TX) Unknown 0 0 0 unknown Unknown Owner alerted County EMC, contacted TCEQ, TCEQ inspection P RE R Y 24 ft 575.00 0.00 1965 TX02958 MCDONALD CREEK 30.6724 -95.5594 2011 TCEQ Yes TCEQ BALDWIN DAM TX H Non-Failure 05/02/2024 Hydrologic/Flooding Spillway Erosion/Head Cutting TX07084-3604 Spring rains caused erosion in the spillway and overtopped/failed a downstream road Texas Severe Storms, Straight-line Winds, Tornadoes, and Flooding (DR-4781-TX) Yes Roads/Bridges Unknown Owner contacted local EMC when water was within 5-ft of the crest, residents downstream evacuated P RE R N 20 ft 56.00 7.00 TX07084 PRAIRIE BRANCH 30.6786 -95.5375 TCEQ Yes TCEQ CEDAR CREEK WS SCS SITE 9 DAM TX H Non-Failure 05/03/2024 Hydrologic/Flooding Excessive/Increased Seepage TX00794-3595 Boils were noted near bore holes from construction project at the dam Texas Severe Storms, Straight-line Winds, Tornadoes, and Flooding (DR-4781-TX) Yes 0 0 0 None Unknown NRCS inspected, sandbag dike set up around the boils, county EMC notified, siphons used to help lower reservoir, contractor monitored L RE C Y 25 ft 205.00 13.00 1971 TX00794 TR-BRUSHY CREEK 32.847 -96.3935 TCEQ Yes TCEQ LOWER EAST FORK LATERALS WS SCS SITE 9 DAM TX H Non-Failure 05/07/2024 Hydrologic/Flooding Spillway Erosion/Head Cutting TX03357-3599 spring rains caused head-cutting erosion in the spillway to progress Texas Severe Storms, Straight-line Winds, Tornadoes, and Flooding (DR-4781-TX) Unknown 0 0 0 None Unknown owner contacted a PE, who notified TCEQ of the damages; TCEQ inspected the dam L RE CPR Y 27 ft 1800.00 143.00 1953 TX03357 WARSAW CREEK 32.5587 -96.3943 TCEQ Yes TCEQ HEATH BRANCH FISHING CLUB LAKE DAM TX S Non-Failure 05/16/2024 Hydrologic/Flooding Spillway Erosion/Head Cutting TX02957-3598 Increased flows in spillway and gate rehab project led to undermining of the spillway stilling basin multiple storms Yes 0 0 0 None Unknown Emergency repairs consisted of placing rip rap and concrete in the eroded areas P RE R NR 21 ft 400.00 0.00 1940 TX02957 MCDONALD CREEK 30.6646 -95.563 TCEQ Yes TCEQ LOWER EAST FORK LATERALS WS SCS SITE 10 DAM TX H Non-Failure 05/16/2024 Hydrologic/Flooding Spillway Erosion/Head Cutting TX03358-3600 spring rains caused head-cutting erosion in the spillway to progress Texas Severe Storms, Straight-line Winds, Tornadoes, and Flooding (DR-4781-TX) Unknown 0 0 0 Water/sewer lines Unknown owner contacted a PE to develop plans for repairs, TCEQ inspeced L RE CPR Y 29 ft 2017.00 141.00 1953 TX03358 WARSAW CREEK 32.5495 -96.4174 TCEQ Yes TCEQ ELKINS LAKE DAM TX H Non-Failure 05/18/2024 Hydrologic/Flooding Spillway Chute Failure TX02956-3597 Spillway chute collapsed Texas Severe Storms, Straight-line Winds, Tornadoes, and Flooding (DR-4781-TX) Unknown 0 0 0 None Unknown Owner constructed an emergency cofferdam to prevent further loss of water P RE IR Y 31 ft 1766.00 85.00 1920 TX02956 PRAIRIE BRANCH 30.6569 -95.532 2002 TCEQ Yes TCEQ PILOT GROVE CREEK WS SCS SITE 62 DAM TX S Non-Failure 06/03/2024 Hydrologic/Flooding Sliding TX00485-3594 slide about 150 ft long, 3 feet wide, 4 feet below dam crest, same general area as an old, stabilized slide Texas Severe Storms, Straight-line Winds, Tornadoes, and Flooding (DR-4781-TX) Unknown 0 0 0 None Unknown TCEQ and NRCS inspections, public meeting, SWCD and HOA monitored the slide L RE C N 31 ft 1584.00 34.00 1971 TX00485 TR-ARNOLD CREEK 33.3175 -96.2546 2010 TCEQ Yes TCEQ COLUMBIAN CLUB LAKE DAM TX H Non-Failure 06/03/2024 Hydrologic/Flooding Spillway Pipe Failure TX00834-3596 SWCD reported piping along the service spillway pipe with erosion up to 10-ft under the pipe cradle Texas Severe Storms, Straight-line Winds, Tornadoes, and Flooding (DR-4781-TX) Unknown 0 0 0 None Unknown NRCS inspected, put up flags to monitor the erosion, on-site contractor for TX03358 monitored P RE IR Y 24 ft 345.00 26.00 1905 TX00834 TR-HUTTON BRANCH 32.9666 -96.8716 2017 TCEQ Yes TCEQ

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