Browse Dams

92,766 dams in the National Inventory of Dams.

National Inventory of Dams

Browse 92,766 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
Longview Dam Missouri Jackson 125 High Not Available 1985 Flood Risk Reduction
Holter Dam Montana Lewis and Clark 124 High Satisfactory 1918 Hydroelectric
Summit Reservoir California Solano 124 High Satisfactory 1968 Water Supply
Hernandez California San Benito 124 High Satisfactory 1962 Water Supply
Littlerock California Los Angeles 124 High Satisfactory 1924 Other
Manitou Colorado El Paso 124 High Fair 1971 Water Supply
Lake Lure Dam North Carolina Rutherford 124 High Unsatisfactory 1927 Hydroelectric
Pine Creek Dam Oklahoma McCurtain 124 High Not Available 1969 Flood Risk Reduction
South Fork No. 2 Dam West Virginia Hardy 123 High Fair 1962 Flood Risk Reduction
Melvern Dam Kansas Osage 123 High Not Available 1972 Flood Risk Reduction
Easton Reservoir Dam Connecticut Fairfield 123 High Fair 1926 Water Supply
Standley Lake Colorado Jefferson 123 High Satisfactory 1913 Irrigation
Henshaw California San Diego 123 High Satisfactory 1923 Water Supply
Duck Creek Station Dams Illinois Fulton 123 High Not Available 1975 Other
Lake Mission Viejo California Orange 123 High Poor 1976 Water Supply
Balsam Meadow Forebay Main California Fresno 123 High Satisfactory 1986 Hydroelectric
Cottonwood Springs Dam South Dakota Fall River 123 High Not Available 1969 Flood Risk Reduction
Cat Creek Nevada Mineral 123 High Unsatisfactory 1932 Water Supply
Dry Falls Dam Washington Grant 123 High Not Available 1949 Flood Risk Reduction
Bucks Lake California Plumas 123 High Satisfactory 1928 Hydroelectric
Elkwater Fork WS Dam West Virginia Randolph 123 High Satisfactory 2009 Water Supply
Soulajule California Marin 122 High Satisfactory 1979 Water Supply
Joe D. Waggonner, Jr. Lock and Dam Louisiana Caddo 122 Significant Not Available 1985 Navigation
Fort Cobb Dam Oklahoma Caddo 122 High Not Available 1959 Flood Risk Reduction
Hammond Dam Pennsylvania Tioga 122 High Not Available 1978 Flood Risk Reduction
Oxford North Carolina Alexander 122 High Fair 1928 Hydroelectric
South Fork No. 1 Dam West Virginia Hardy 122 High Fair 1963 Flood Risk Reduction
Lost Creek California Butte 122 High Fair 1924 Hydroelectric
Isabella Fresh Water Pennsylvania Fayette 122 Significant Fair - Grade Stabilization
North Fork of Pound Dam Virginia Wise 122 High Not Available 1966 Flood Risk Reduction
Belle Fourche Dam South Dakota Butte 122 High Not Available 1911 Irrigation
Lewellyn Amd Impoundment West Virginia Marion 122 High Not Available - Other
Devil`s Kitchen Dam Illinois Williamson 121 High Satisfactory 1959 Fish and Wildlife Pond
Englewood Dam Ohio Montgomery 121 High Fair 1922 Flood Risk Reduction
Keystone Dam Oklahoma Tulsa 121 High Not Available 1964 Flood Risk Reduction
Maggie Creek Dam Nevada Elko 121 High Fair 1992 Flood Risk Reduction
Bully Creek Dam Oregon Malheur 121 High Not Available 1963 Flood Risk Reduction
Plant Wansley Main Storage Lake Dam Georgia Carroll 121 High Satisfactory 1975 Water Supply
Swift No 2 Hydroelectric Project Washington Cowlitz 121 Low Satisfactory 1959 Hydroelectric
Texas Basin Idaho Owyhee 121 High Fair 1979 Irrigation
Momentive Landfill #2 Dam West Virginia Tyler 121 High Satisfactory - Tailings
Perry Dam Kansas Jefferson 121 High Not Available 1966 Flood Risk Reduction
Fairmont California Los Angeles 121 High Satisfactory 1912 Flood Risk Reduction
Lake Desmet (North Dam) Wyoming Johnson 120 High Fair 1975 Water Supply
Wallace Georgia Hancock 120 High Satisfactory 1980 Hydroelectric
Little Mulberry Creek Site 1 Arkansas Crawford 120 High Fair 1975 Water Supply
Fawn Mine #91 Refuse Impoundment Pennsylvania Butler 120 High Fair - Other
Grayson Dam Kentucky Carter 120 High Not Available 1968 Flood Risk Reduction
Lake Brownwood Dam Texas Brown 120 High Satisfactory 1933 Water Supply
Lake Desmet (A,B,C & Spillway Dikes) Wyoming Johnson 120 High Fair 1975 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.