Browse Dams

7,732 dams in the National Inventory of Dams.

National Inventory of Dams

Browse 7,732 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
Hewitt Dam Montana Phillips 10 Low Poor 1938 Fish and Wildlife Pond
M Tucker Laffitte Dam South Carolina Hampton 10 Low Poor 1955 Recreation
Lake Mattawa South Dam Massachusetts Franklin 10 Significant Poor 1893 Recreation
Currier Pond Dam New Hampshire Strafford 10 Low Poor 1963 Recreation
Gumpas Pond Dam New Hampshire Hillsborough 10 High Poor 1900 Recreation
Lake Boon Dam Massachusetts Middlesex 10 Significant Poor 1847 Recreation
Silver Lake North Dike Vermont Franklin 10 Low Poor 1895 Water Supply
Price Lake Indiana Kosciusko 10 Low Poor 1983 Recreation
Lake Manitou Dam Indiana Fulton 10 Significant Poor 1827 Recreation
Crystal Lake Dam New Jersey Bergen 10 Low Poor 1939 Recreation
South Middleton Dam Massachusetts Essex 10 Significant Poor —
Huckins Mill Pond Dam New Hampshire Carroll 10 Low Poor 1947 Recreation
Mudd Pond Vermont Rutland 10 Low Poor 1900 Recreation
Russian River No. 1 California Sonoma 10 Low Poor 1963 Water Supply
Smeallie Dam New York Montgomery 10 Significant Poor 1974 Irrigation
Agfa Lake Dam New York Broome 10 Significant Poor — Recreation
Merriewold Lake Dam New York Sullivan 10 Significant Poor 1914 Recreation
Coon Brook Bog Dam New Hampshire Coos 10 Low Poor 1947 Recreation
Camp Delaware Dam Connecticut Litchfield 10 Significant Poor — Recreation
Estlick F Wetland Minnesota Otter Tail 10 Low Poor 1970 Recreation
Henderson Drain Detention Wyoming Laramie 10 Low Poor 1987 Flood Risk Reduction
Spring Lake Pennsylvania Susquehanna 10 High Poor 1919 Recreation
Martin Dam South Carolina Horry 10 Low Poor 1950 Recreation
Smith Pond Dam Connecticut Litchfield 10 Significant Poor 1927 Recreation
Rock Ridge Lake Dam New Jersey Morris 10 Significant Poor 1949 Recreation
Seeley Pond Dam Connecticut Fairfield 10 Significant Poor — Recreation
Coffin Pond Dam New Hampshire Grafton 10 Low Poor 1960 Recreation
Byron Pond Dam New York Genesee 10 Significant Poor 1925 Other
Wood River Junction Rhode Island Washington 10 Significant Poor 1860 Recreation
Waterville Reservoir Dam #2 New York Oneida 10 Significant Poor 1917 Water Supply
Clearwater Pond Maine Franklin 10 Significant Poor — Flood Risk Reduction
Medicine Lake Dam No. 12 Montana Sheridan 10 Low Poor 1935 Fish and Wildlife Pond
Honeybee Dam Nevada Clark 10 Significant Poor 1956 Fish and Wildlife Pond
Longville Lake Louisiana Beauregard 10 High Poor 1950 Recreation
Kennington Pond Dam South Carolina Lancaster 10 Low Poor 1958 Recreation
Watson Pond Dam Massachusetts Berkshire 10 Low Poor — Recreation
Taylor Pond Dam 1 South Carolina Calhoun 10 Low Poor 1950 Recreation
Richmondville Water Supply Dam #1 New York Schoharie 10 Significant Poor 1916 Water Supply
Turcos Dam New York Sullivan 10 Significant Poor 1931 Recreation
Staatsburg Water CO Dam New York Dutchess 10 Significant Poor 1908 Recreation
Westchester Lake Dam New York Westchester 10 High Poor 1920 Recreation
Welch Dam Michigan Berrien 10 Low Poor —
Upper Snow Dam Washington Chelan 10 Low Poor 1939 Water Supply
Little Hill Pond Minnesota Aitkin 10 Low Poor 1978 Fish and Wildlife Pond
Nightingale Pond Dam South Carolina Georgetown 10 Low Poor 1900 Recreation
East Creek Site No. 2 Vermont Addison 10 Low Poor 1964 Fish and Wildlife Pond
Nassau Lake Dam New York Rensselaer 10 Significant Poor 1792 Recreation
Johnsonville Club Dam South Carolina Florence 10 Low Poor 1960 Recreation
Turkey Hill Reservoir Dam & Dike Connecticut Middlesex 10 Significant Poor — Water Supply
Griswold Pond #2 Dam Connecticut Middlesex 10 Significant Poor — 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.