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Browse Dams

1,939 dams in the National Inventory of Dams.

National Inventory of Dams

Browse 1,939 dams from the NID database. Each record includes dam name, location, physical dimensions, hazard potential classification, condition assessment, purpose, owner information, and emergency action plan status. Use the filters below to search by state, hazard level, condition, or keyword.

Name State County Height (ft) Hazard Condition Year Purpose
Hillside Pond Dam New York Sullivan 32 Low Not Rated 1995 Recreation
Walden New York Orange 32 Low Satisfactory 1909 Hydroelectric
Attica Dam (Upper) New York Wyoming 32 High Fair 1930 Water Supply
Lake Welch Dam New York Rockland 32 High Poor 1937 Recreation
North Division Street Dam New York Cayuga 32 Significant Satisfactory 1865 Hydroelectric
Popolopen Lake New York Orange 32 High Poor — Water Supply
Little Falls Dist Reservoir Dam New York Herkimer 32 Significant Satisfactory 1960 Water Supply
Second Reservoir Dam New York Rockland 32 Significant Poor 1928 Water Supply
Port Leyden New York Lewis 32 Low Satisfactory 1983 Hydroelectric
Blind Brook Club Dam New York Westchester 32 High Poor 1959 Irrigation
Marcy Reservoir Dam New York Oneida 32 Low Not Rated 1919 Water Supply
Pinewood Lake Dam New York Steuben 32 Significant Not Rated 1960 Recreation
Clark Seed Farms Pond Dam #3 New York Tioga 32 Significant Poor 1964 Irrigation
Macomb New York Franklin 32 Low Satisfactory 1904 Hydroelectric
North Lake Dam New York Westchester 32 High Satisfactory 1936 Recreation
Black Brook New York Clinton 31 Low Satisfactory 1896 Hydroelectric
Mohr Dam New York Erie 31 Low Not Rated 2000 Fire Protection, Stock, Or ...
Swan Lake Dam New York Sullivan 31 Significant Fair 1894 Recreation
Glenwood Lake Dam New York Orleans 31 High Satisfactory 1903 Hydroelectric
Lower Reservoir Dam New York Madison 31 Significant Poor 1882 Other
Walmart Detention Pond A Dam New York Schoharie 31 Low Not Rated — Flood Risk Reduction
Tannenbaum Reservoir Dam New York Cattaraugus 31 High Satisfactory 2006 Other
Larchmont Water Company Dam #2 New York Westchester 31 High Poor 1935 Recreation
Coxsackie Reservoir Dam New York Greene 31 Significant Poor 1940 Water Supply
Beebee Island New York Jefferson 31 Low Satisfactory 1931 Hydroelectric
Montour Falls Reservoir Dam New York Schuyler 31 Significant Not Rated 1899 Recreation
Ledge Pond Dam New York Dutchess 31 Low Not Rated 2003 Recreation
Carry Falls Dike C New York St. Lawrence 31 High Satisfactory 1953 Hydroelectric
Taylor Pond Dam New York Clinton 31 High Satisfactory 1924 Recreation
Joseph Torch Lake Dam New York Broome 31 Significant Poor 1966 Recreation
Hollow Dam New York St. Lawrence 31 Low Satisfactory 1987 Hydroelectric
Harrington Dam New York Columbia 30 Significant Not Rated — Recreation
High Falls New York Ulster 30 Low Satisfactory 1935 Hydroelectric
Parrish Pond Reservoir Dam New York Monroe 30 Significant Not Rated — Water Supply
Morton Salt Lagoon #3 Dam New York Yates 30 Low Not Rated 1975 Irrigation
Masonville Dam New York Delaware 30 Low Not Rated — Recreation
Pike Brook Dam New York Washington 30 Significant Poor 1924 Water Supply
Pecks Dam New York Ulster 30 Significant Poor 1962 Recreation
Teelins Pond Dam New York Oneida 30 Low Not Rated 1917 Recreation
Cobleskill Upper Reservoir Dam New York Schoharie 30 High Satisfactory 1967 Water Supply
Ridgewood Reservoir Dam New York Queens 30 Low Not Rated 1891 Water Supply
Baxter Preserve Pond Dam New York Westchester 30 Significant Not Rated 1948 Recreation
South Lake Dam New York Herkimer 30 High Satisfactory 1901 Recreation
Patterson Brixius Grey Watershed 2 Dam New York Broome 30 High Satisfactory 1973 Flood Risk Reduction
Triple L Lake Dam New York Sullivan 30 Significant Not Rated 1966 Recreation
Delanson Reservoir Dam New York Schenectady 30 Low Not Rated 1915 Water Supply
Highland Falls #2 Dam New York Orange 30 Significant Poor 1909 Water Supply
Sand Lake Dam New York Herkimer 30 Low Not Rated 1901 Navigation
Coxsackie Reservoir #2 Dam New York Greene 30 Low Fair 1950 Water Supply
Effley New York Lewis 30 High Satisfactory 1902 Hydroelectric

Frequently Asked Questions

Hazard potential is based on the consequences of dam failure, not the condition of the dam. High hazard means loss of human life is probable. Significant means economic and environmental losses are expected but no probable loss of life. Low means minimal losses are expected. The classification considers downstream population, infrastructure, and environmental resources.

Condition ratings reflect the physical state of the dam based on periodic inspections. Satisfactory means no deficiencies found. Fair means minor issues exist but no immediate action needed. Poor means safety deficiencies require remedial action. Unsatisfactory means the dam is unsafe and immediate corrective action is required.

Yes. Use the search field above to find dams by name. You can also combine the search with state, hazard, and condition filters to narrow your results. Each dam record links to a detail page with complete information.