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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.

Clear
Name State County Height (ft) Hazard Condition Year Purpose
Mount Morris Dam New York Livingston 249 High Not Available 1952 Flood Risk Reduction
Ashokan Dam New York Ulster 213 High Satisfactory 1916 Water Supply
Downsville Dam New York Delaware 204 High Satisfactory 1954 Water Supply
Merriman Dam New York Ulster 195 High Satisfactory 1945 Water Supply
Neversink Reservoir Dam New York Sullivan 190 High Satisfactory 1953 Water Supply
Gilboa Dam New York Schoharie 183 High Satisfactory 1926 Water Supply
Cannonsville Dam New York Delaware 175 High Satisfactory 1964 Water Supply
New Croton Reservoir Dam New York Westchester 174 High Satisfactory 1906 Water Supply
Blenheim - Gilboa Upper New York Schoharie 170 High Satisfactory 1974 Hydroelectric
Kensico Dam New York Westchester 168 High Satisfactory 1916 Water Supply
Robert Moses - St. Lawrence New York St. Lawrence 167 High Satisfactory 1958 Hydroelectric
Blenheim - Gilboa Lower New York Schoharie 165 High Satisfactory 1974 Hydroelectric
Lewiston New York Niagara 155 High Satisfactory 1963 Hydroelectric
Spier Falls New York Warren 146 High Satisfactory 1903 Hydroelectric
Caneadea Dam New York Allegany 140 High Fair 1929 Recreation
South Forebay Dike New York St. Lawrence 136 High Satisfactory 1958 Hydroelectric
Swinging Bridge New York Sullivan 135 High Fair 1930 Hydroelectric
Long Sault New York St. Lawrence 132 High Satisfactory 1958 Hydroelectric
Arkport Dam New York Steuben 131 High Not Available 1940 Flood Risk Reduction
East Sidney Dam New York Delaware 130 High Not Available 1950 Flood Risk Reduction
Cross River Dam New York Westchester 126 High Satisfactory 1908 Water Supply
Inghams Dam New York Fulton 125 High Poor 1911 Hydroelectric
Lewiston Reservoir Dike New York Niagara 119 High Satisfactory 1963 Hydroelectric
Massena Intake New York St. Lawrence 118 High Satisfactory 1958 Hydroelectric
Soft Maple Diversion New York Lewis 115 High Satisfactory 1926 Hydroelectric
Stewarts Bridge New York Saratoga 113 High Satisfactory 1952 Hydroelectric
Croton Falls Dam New York Putnam 113 High Satisfactory 1910 Water Supply
Titicus Dam New York Westchester 109 High Satisfactory 1895 Water Supply
Sturgeon Pool Dam New York Ulster 109 High Satisfactory 1922 Hydroelectric
Windsor Park Dam New York Erie 106 Low Not Rated 2006 Other
Delta Dam New York Oneida 106 High Fair 1912 Navigation
Toronto New York Sullivan 103 High Unsatisfactory 1926 Hydroelectric
Rio New York Sullivan 101 High Fair 1927 Hydroelectric
Chaumont Swamp Dam New York St. Lawrence 100 Low Not Rated 1954 Irrigation
Mill River Dam New York Westchester 100 High Satisfactory 1966 Water Supply
Soft Maple Terminal New York Lewis 100 High Satisfactory 1926 Hydroelectric
Conklingville New York Saratoga 100 High Satisfactory 1930 Hydroelectric
Robert Moses - Niagara New York Niagara 97 High Satisfactory 1963 Hydroelectric
Whitney Point Dam New York Broome 95 High Not Available 1942 Flood Risk Reduction
Nys Atomic Development Dam #1 New York Cattaraugus 95 Low Not Rated 1963 Water Supply
Middle Branch Dam New York Putnam 95 High Satisfactory 1878 Water Supply
Moshier New York Herkimer 93 High Satisfactory 1930 Hydroelectric
Almond Dam New York Steuben 90 High Not Available 1949 Flood Risk Reduction
Hillview Reservoir Dam New York Westchester 90 High Satisfactory 1915 Water Supply
Oak Orchard Creek Dam New York Orleans 90 High Satisfactory 1917 Hydroelectric
Mill Brook Site 2 Dam New York Chenango 87 High Poor 1986 Flood Risk Reduction
Rome City Dam New York Lewis 85 High Satisfactory 1958 Water Supply
Amawalk Dam New York Westchester 85 High Satisfactory 1897 Water Supply
West Branch Dam New York Putnam 85 High Satisfactory 1895 Water Supply
Sleepy Hollow Dam New York Greene 83 High Satisfactory 1972 Recreation

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.