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Browse Dams

7,711 dams in the National Inventory of Dams.

National Inventory of Dams

Browse 7,711 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
Frd No 32 Kansas Lincoln 40 Significant Poor 1978 Flood Risk Reduction
Lock 33 Dam Erie Canal New York Monroe 40 High Poor 1908 Hydroelectric
Ilion Reservoir #1 Dam New York Herkimer 40 High Poor 1895 Water Supply
Jurgens Dam Nebraska Pawnee 40 Low Poor 1949 Other
Lake Maria Dam Ohio Richland 40 Significant Poor 1958 Recreation
Ranken Pond Dam South Carolina Anderson 40 High Poor 1949 Recreation
Bonneville Wyoming Fremont 40 Low Poor 1914 Other
Lake Rupert Dam Ohio Vinton 40 High Poor 1968 Water Supply
Wallowa Lake Oregon Wallowa 40 High Poor 1931 Irrigation
Tackett Lake Dam Indiana Morgan 40 Low Poor 1969
Second Creek WS Str No. 10b Dam Mississippi Adams 40 Significant Poor 1965 Flood Risk Reduction
Indian Creek Pennsylvania Fayette 40 High Poor 1905 Water Supply
New Milford Reservoir #4 Dam Connecticut Litchfield 40 Significant Poor 1900 Recreation
Wall Lake Dam New Mexico Catron 40 Low Poor 1949 Fish and Wildlife Pond
Scott Reservoir Dam Massachusetts Worcester 40 High Poor 1875 Water Supply
Abiaca Watershed Structure Y-34-05 Dam Mississippi Carroll 40 High Poor 1965 Flood Risk Reduction
Schnacke Lake Number 3 Dam Indiana Vanderburgh 40 Significant Poor — Recreation
Marion County Roadgrade Dam 17-76-18 Iowa Marion 40 Significant Poor 1965 Other
Lake Gary Dam Mississippi Greene 40 Undetermined Poor — Recreation
Belvedere Golf Resort Lake Dam Arkansas Garland 40 Low Poor 1971 Recreation
Mock Bass Wyoming Sheridan 40 Low Poor 1966 Fire Protection, Stock, Or ...
Fourche Creek Wid Site 19 Arkansas Randolph 40 Significant Poor 1982 Recreation
Maui Reservoir 24 Maui 39 High Poor 1917 Irrigation
Summerlin Detention Basin #5 Dam Nevada Clark 39 High Poor 2002 Flood Risk Reduction
Lake Helen California Sonoma 39 High Poor 1966 Water Supply
Papio Creek W-15 Nebraska Washington 39 Low Poor 1998 Other
Frd No I-1-25 (Illinois Crkdam) Kansas Montgomery 39 High Poor 1969 Flood Risk Reduction
Cottonwood Dam (Park) Montana Park 39 High Poor 1953 Irrigation
Warford Dam Nebraska Gage 39 Low Poor 1970 Recreation
Lanier Dam Virginia Martinsville 39 High Poor — Recreation
Powell Oil Company Lake Kentucky Christian 39 Low Poor 1960 Other
Royal Oak Golf Course Pond No. 2 Dam Ohio Clermont 39 Significant Poor 1966 Water Supply
Behrendt Dam Nebraska Washington 39 Low Poor 1945 Other
Frd No T-1 Kansas Brown 39 Significant Poor 1968 Flood Risk Reduction
Owl Hollow Dam Texas Burnet 39 High Poor 1951 Recreation
Moxee Valley Orchards Dam Washington Yakima 39 High Poor 1985 Irrigation
Summitcrest Farm Pond Dam Ohio Columbiana 39 Significant Poor 1960 Recreation
Homestake Mining Company Evap Pond No.1 New Mexico Cibola 39 Significant Poor 1990 Other
Wilson Creek 2-3 Nebraska Otoe 39 Low Poor 1964 Other
Tioga Dam North Dakota Williams 39 High Poor 1963 Recreation
West Branch Reservoir Dam New Jersey Somerset 39 High Poor 1930 Recreation
Ascalmore Structure Y-17a-02 Dam Mississippi Tallahatchie 39 High Poor 1959 Flood Risk Reduction
Coffing Brothers Dam Indiana Fountain 39 Low Poor 1962 Recreation
Jm Stuart Station Ash Pond No. 7 Ohio Adams 39 Significant Poor — Tailings
Brown No. 1 Wyoming Albany 39 Low Poor 1953 Irrigation
Swift Run Lake Dam Ohio Miami 39 Significant Poor 1876 Water Supply
Wells Ranch Dam Nebraska Howard 39 Significant Poor 1970 Fire Protection, Stock, Or ...
Lake Carostar Dam South Carolina Oconee 39 Low Poor — Fire Protection, Stock, Or ...
Seleski Lake No. 2 Dam Ohio Harrison 39 Significant Poor 1963 Recreation
Lower County Squire Dam Kentucky Kenton 39 High Poor 1996 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.