Browse Dams

1,941 dams in the National Inventory of Dams.

National Inventory of Dams

Browse 1,941 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.

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Name State County Height (ft) Hazard Condition Year Purpose
Lake Macgregor Dam New York Putnam 38 Significant Satisfactory 1955 Recreation
Attica Reservoir Dam (Middle) New York Wyoming 38 Significant Not Rated 1925 Water Supply
Benson Mines Plant Dam New York St. Lawrence 38 Low Not Rated - Irrigation
Village of Cobleskill Holding Pond Dam New York Schoharie 38 High Satisfactory 1986 Water Supply
Ed Pylkas Dam New York Tioga 37 High Poor 1955 Flood Risk Reduction
Churchtown Dam New York Columbia 37 High Satisfactory 1904 Water Supply
Mcgregor Dam New York Clinton 37 High Satisfactory 1968 Recreation
Goshen Reservoir #1 Dam New York Orange 37 High Poor 1963 Water Supply
Altamont Main Reservoir Dam New York Albany 37 High Poor 1898 Water Supply
Chadwick Lake Dam New York Orange 37 High Poor 1926 Recreation
Potuck Reservoir Dam New York Greene 37 High Satisfactory 1930 Water Supply
Green Lake Dam New York Erie 37 High Satisfactory 1909 Recreation
Cortlandt Lake Dam New York Westchester 37 High Satisfactory 1929 Recreation
Palmer Falls New York Warren 37 Low Satisfactory 1913 Hydroelectric
Brady Pond Dam and Dike New York Dutchess 37 High Satisfactory 2001 Recreation
Higley New York St. Lawrence 37 High Satisfactory 1925 Hydroelectric
Allens Falls New York St. Lawrence 37 High Satisfactory 1991 Hydroelectric
Otter Creek Dam New York Orleans 37 Significant Poor 1916 Recreation
Nanticoke Creek Site 9a Dam New York Broome 37 High Satisfactory 1965 Flood Risk Reduction
30 Foot Dam New York Tompkins 36 High Poor 1903 Recreation
Roxbury Dam New York Delaware 36 High Poor 1912 Recreation
Cliff Lake New York Sullivan 36 High Satisfactory 1930 Hydroelectric
Treman Lake Dam New York Tompkins 36 Significant Poor 1930 Recreation
Larchwood Lake Dam New York Otsego 36 High Satisfactory 1969 Recreation
Snow Making Pond Dam New York Ulster 36 Low Not Rated 1975 Recreation
Silver Mine Lake Dam New York Orange 36 Significant Poor 1934 Recreation
Dwyer Dam New York Tompkins 36 Low Not Rated 1966 Other
Silver Stream Reservoir Dam New York Orange 36 High Satisfactory 1923 Water Supply
Mayfield Dam New York Fulton 36 Low Not Rated 1930 Recreation
Camp Chautauqua Pond Dam New York Cattaraugus 36 Significant Not Rated 1965 Recreation
Beaver Brook Site #1 Dam New York Herkimer 36 High Poor 2002 Flood Risk Reduction
Curtis New York Saratoga 36 Low Satisfactory 1913 Hydroelectric
Mogisca Lake Dam New York Sullivan 36 Significant Not Rated 1976 Recreation
Woodland Reservoir Dam New York Onondaga 36 High Satisfactory 1894 Water Supply
College Hill Park Reservoir Dam New York Dutchess 36 Significant Satisfactory 1922 Other
Hoffman Creek Dam New York Chemung 36 High Poor 1871 Water Supply
Cobalt Lake Dam New York Dutchess 36 Low Not Rated 1953 Other
Silver Creek Reservoir Dam New York Chautauqua 35 Significant Not Rated 1925 Water Supply
Helderberg Lake Dam New York Albany 35 High Fair 1944 Recreation
Livonia Reservoir Dam New York Livingston 35 Low Not Rated 1926 Water Supply
Guymard Lake Dam New York Orange 35 Low Poor 1858 Recreation
North Lake B Dam New York Herkimer 35 High Poor 1850 Navigation
Palmer Lake Dam New York Essex 35 Low Not Rated 1920 Other
Sherburne Upper Reservoir Dam New York Chenango 35 Low Poor 1917 Water Supply
Pleasure Lake Dam New York Sullivan 35 High Satisfactory 1875 Recreation
Beaver Dam Lake Dam New York Orange 35 High Satisfactory 1913 Other
High Dam New York Oswego 35 High Fair 1928 Hydroelectric
Philmont Reservoir Dam New York Columbia 35 Significant Not Rated 1916 Recreation
Lake Frederick New York Orange 35 High Poor 1911 Recreation
White Plains Reservoir #2 Dam New York Westchester 35 High Satisfactory 1907 Water Supply

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.