High Risk Dams in New York

New York has 103 high hazard dams with a condition assessment of poor or unsatisfactory. These are dams where failure would probably cause loss of human life and where recognized safety deficiencies have been identified.

Of the 431 high hazard dams in New York, 103 (23%) have concerning condition ratings — 97 rated poor and 6 rated unsatisfactory.

Dam	County	Height (ft)	Condition	Purpose	Year
Inghams Dam	Fulton	125	Poor	Hydroelectric	1911
Toronto	Sullivan	103	Unsatisfactory	Hydroelectric	1926
Mill Brook Site 2 Dam	Chenango	87	Poor	Flood Risk Reduction	1986
Ilion Reservoir #3 Dam	Herkimer	76	Poor	Water Supply	1921
60 Foot Dam	Tompkins	75	Poor	Water Supply	1911
Seneca Falls	Seneca	68	Unsatisfactory	Hydroelectric	1912
Ephratah Dam	Fulton	65	Poor	Hydroelectric	1980
East Canada Lake Dam	Herkimer	65	Poor	Hydroelectric	1924
Beecher Creek Flood Control Dam	Chemung	63	Poor	Flood Risk Reduction	1999
Stillwell	Orange	62	Unsatisfactory	Water Supply	1948
Ilion Reservoir #2 Dam	Herkimer	60	Poor	Water Supply	1903
Martin Dunham Reservoir Dam	Rensselaer	59	Poor	Recreation	1913
Eaton Brook Reservoir Dam	Madison	58	Poor	Navigation	1893
Port Creek Reservoir Dam	Fulton	56	Poor	Water Supply	1930
Lake Moraine Dam	Madison	56	Poor	Navigation	1836
Waverly Lower Reservoir Dam	Tioga	54	Poor	Water Supply	1880
Oquaga Creek State Park Dam	Broome	54	Poor	Recreation	1976
Jamesville Reservoir Dam	Onondaga	53	Poor	Navigation	1874
Melzingah Dam	Dutchess	51	Poor	Water Supply	1924
Oneida City Reservoir Dam	Oneida	50	Poor	Water Supply	1926
Indian Lake Stone Dam	Hamilton	47	Poor	Recreation	1898
First Reservoir Dam	Rockland	46	Poor	Water Supply	1917
Lower (south) Wiccopee Dam	Putnam	45	Poor	Water Supply	1913
Fairport Reservoir Dam #1	Ontario	45	Poor	Recreation	1923
Honk Falls Dam	Ulster	42	Poor	Recreation	1898
Ilion Reservoir #1 Dam	Herkimer	40	Poor	Water Supply	1895
Lock 32 Dam Erie Canal	Monroe	40	Poor	Navigation	1908
Green Haven Correctional Facility Dam	Dutchess	40	Poor	Fire Protection, Stock, Or Small Fish Pond	1939
Lock 33 Dam Erie Canal	Monroe	40	Poor	Hydroelectric	1908
Tillson Lake Dam	Ulster	39	Poor	Recreation	1930
Peck Lake Dam	Fulton	39	Poor	Hydroelectric	1910
Pelto Dam	Tioga	39	Poor	Flood Risk Reduction	1955
Altamont Main Reservoir Dam	Albany	37	Poor	Water Supply	1898
Goshen Reservoir #1 Dam	Orange	37	Poor	Water Supply	1963
Ed Pylkas Dam	Tioga	37	Poor	Flood Risk Reduction	1955
Roxbury Dam	Delaware	36	Poor	Recreation	1912
30 Foot Dam	Tompkins	36	Poor	Recreation	1903
Hoffman Creek Dam	Chemung	36	Poor	Water Supply	1871
Beaver Brook Site #1 Dam	Herkimer	36	Poor	Flood Risk Reduction	2002
Rockwood Power Dam	Fulton	35	Poor	Recreation	1916
Lake Frederick	Orange	35	Poor	Recreation	1911
Utica Reservoir #5 Dam	Oneida	34	Poor	Water Supply	1896
Swan Lake Dam	Westchester	34	Poor	Recreation	1933
East Syracuse Reservoir Dam	Onondaga	33	Poor	Recreation	1922
Lake Welch Dam	Rockland	32	Poor	Recreation	1937
Blind Brook Club Dam	Westchester	32	Poor	Irrigation	1959
Popolopen Lake	Orange	32	Poor	Water Supply
Larchmont Water Company Dam #2	Westchester	31	Poor	Recreation	1935
Binnewater Reservoir Dam & Dike	Ulster	30	Poor	Recreation	1926
Lake Sebago Dam	Rockland	30	Poor	Recreation	1925
Loughberry Lake Dam	Saratoga	30	Poor	Water Supply
New Rochelle Reservoir #3 Dam	Westchester	30	Poor	Recreation	1908
Rensselaer Lake Dam	Albany	30	Poor	Recreation	1850
New Rochelle Reservoir #1 Dam	Westchester	30	Poor	Recreation	1894
Lusk Reservior	Orange	30	Poor	Water Supply	1895
Tivoli Lake Dam	Rockland	29	Poor	Recreation	1908
Rexmere Dam	Delaware	27	Poor	Recreation	1965
Byram Lake Reservoir Dam	Westchester	27	Poor	Water Supply
Melody Lake Dam	Cortland	26	Poor	Recreation	1902
Ymca Camp Mcalister Dam	Orange	26	Poor	Recreation	1955
Harrower Pond Dam	Montgomery	25	Poor	Recreation	1870
Perkins Estate Pond Dam	Putnam	25	Poor	Recreation	1927
Cold Spring Dam (lower)	Putnam	25	Poor	Water Supply	1942
Upper Larchmont Road Dam	Chemung	25	Poor	Flood Risk Reduction	2005
Mckinley Mall Retention Pond Dam	Erie	25	Poor	Flood Risk Reduction	1985
Lake Carmel Dam	Putnam	25	Poor	Recreation	1930
Lake Cohasset Upper Dam	Orange	25	Poor	Recreation	1924
Rainbow Lake Dam	Hamilton	25	Poor	Recreation	1929
Main Mill Dam	Clinton	25	Poor	Hydroelectric	1881
Cold Spring Dam (upper)	Putnam	23	Poor	Water Supply	1934
Lake Lincolndale Dam	Westchester	22	Poor	Recreation	1935
Lake Jefferson	Sullivan	22	Unsatisfactory	Hydroelectric	1927
Churchill Dam	Delaware	21	Poor	Recreation	1965
Basic Creek Dam	Albany	21	Poor	Water Supply	1928
Lock 24 Dam Erie Canal	Onondaga	21	Poor	Hydroelectric	1908
Irvington Water Works Dam	Westchester	20	Poor	Other	1900
Crystal Lake Dam	Orange	20	Poor	Recreation	1937
Fairport Reservoir Dam #2	Ontario	20	Poor	Recreation	1932
Tyrone Power Company Dam	Schuyler	20	Poor	Recreation	1953
Mud Lock C&s Canal Dam	Cayuga	20	Poor	Navigation	1912
Mamaroneck Reservoir Dam	Westchester	19	Poor	Flood Risk Reduction	1928
Chazy Lake Dam	Clinton	19	Poor	Recreation	1926
S. Greece Waste Weir Dam	Monroe	19	Poor	Navigation	1918
Lake Adirondack Dam	Hamilton	18	Poor	Recreation	1910
Red Creek Dam	Wayne	18	Poor	Recreation
Delafield Pond	Orange	18	Unsatisfactory	Recreation
Tarrytown Waterworks Dam	Westchester	18	Poor	Water Supply	1897
Bear Gulch Pond Dam	Schoharie	18	Poor	Recreation	1910
Lake Peekskill Dam	Putnam	16	Poor	Recreation	1928
Harrison Spillway Dam	Wayne	16	Poor	Navigation	1918
Still Lake Dam	Westchester	16	Poor	Recreation	1930
Stump Pond Dam	Cortland	15	Poor	Recreation	1928
Loon Lake Dam	Warren	15	Poor	Recreation	1941
Guilford Lake Dam	Chenango	15	Poor	Water Supply	1827
Croton Road Dam And Dike	Westchester	15	Poor
Lake Lucille Dam	Rockland	13	Poor	Recreation	1935
Hemlock Lake Dam	Livingston	12	Poor	Water Supply	1926
Mill Pond Dam	Rensselaer	12	Poor	Recreation	1918
Pine Grove Lake Dam	Rockland	12	Poor	Recreation	1968
Canadice Lake Dam	Ontario	11	Poor	Water Supply	1947
Upper Massapequa Lake Dam	Nassau	11	Poor	Recreation	1900
Westchester Lake Dam	Westchester	10	Poor	Recreation	1920
Lower Cragston Lake	Orange	10	Unsatisfactory	Recreation

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