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Browse Dams

92,625 dams in the National Inventory of Dams.

National Inventory of Dams

Browse 92,625 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
Ponderosa California Butte 160 Low Satisfactory 1962 Hydroelectric
Cobbs Creek Regional Water Supply Dam (Main Dam A) Virginia Cumberland 160 High Not Rated — Water Supply
Gillham Dam Arkansas Howard 160 High Not Available 1975 Flood Risk Reduction
Wells Washington Chelan 160 High Poor 1968 Hydroelectric
Dequeen Dam Arkansas Sevier 160 High Not Available 1977 Flood Risk Reduction
Paintsville Dam Kentucky Johnson 160 High Not Available 1980 Flood Risk Reduction
San Antonio Dam California San Bernardino 160 High Not Available 1956 Flood Risk Reduction
Juncal California Santa Barbara 160 High Satisfactory 1930 Other
Boone Dam Tennessee Washington 160 High Not Available 1952 Flood Risk Reduction
Willow Creek Dam Oregon Morrow 160 High Not Available 1982 Flood Risk Reduction
Squaw Creek Dam Texas Somervell 159 High Not Rated 1977 Recreation
Horsetooth Dam Colorado Larimer 158 High Not Available 1949 Irrigation
Miller Steam Plant Ash Pond Alabama Jefferson 158 Low Not Rated 1977 Other
Westlake Reservoir California Los Angeles 158 High Satisfactory 1972 Water Supply
Bonny Dam Colorado Yuma 158 High Not Available 1951 Flood Risk Reduction
Tuttle Creek Dam - Blue Rapids Levee Kansas Marshall 157 High Not Available 1963 Flood Risk Reduction
Rifle Gap Dam Colorado Garfield 157 High Not Available 1967 Irrigation
Barkley Lock and Dam Kentucky Lyon 157 High Not Available 1966 Navigation
Lake Patagonia Arizona Santa Cruz 157 High Satisfactory 1968 Recreation
Santa Ynez Canyon California Los Angeles 157 High Satisfactory 1968 Other
Tuttle Creek Dam Kansas Pottawatomie 157 High Not Available 1960 Flood Risk Reduction
Keswick Dam California Shasta 157 High Not Available 1950 Flood Risk Reduction
Black Butte Dam California Tehama 156 High Not Available 1963 Flood Risk Reduction
Yatesville Dam Kentucky Lawrence 156 High Not Available 1988 Flood Risk Reduction
Nepaug Dam Connecticut Litchfield 156 High Fair 1918 Water Supply
Table Rock Reservoir Dam South Carolina Pickens 155 High Satisfactory 1925 Water Supply
Lewiston New York Niagara 155 High Satisfactory 1963 Hydroelectric
Big Creek Dam No. 6 California Madera 155 High Satisfactory 1923 Hydroelectric
Bragg Fork Slurry Impoundment West Virginia Boone 155 High Not Available — Tailings
Clearwater Dam Missouri Wayne 155 High Not Available 1942 Flood Risk Reduction
Tugalo Georgia Habersham 155 High Satisfactory 1923 Hydroelectric
Tailings Impoundment Montana Madison 155 Significant — —
Slickrock Creek California Shasta 155 Significant Satisfactory 2004 Water Supply
North Fork Dam California Placer 155 Significant Not Available 1939 Debris Control
Bear Swamp - North Dike Massachusetts Franklin 155 Low Satisfactory 1974 Hydroelectric
Pomme De Terre Dam Missouri Hickory 155 High Not Available 1961 Flood Risk Reduction
Prettyboy Dam Maryland Baltimore 155 High Fair 1936 Water Supply
Wyman Maine Somerset 155 High Satisfactory 1930 Hydroelectric
Pensacola Oklahoma Mayes 155 High Satisfactory 1940 Hydroelectric
Dorena Dam Oregon Lane 154 High Not Available 1949 Flood Risk Reduction
Kennecott Smelter Tailings Pond Utah Salt Lake 154 Significant Not Rated — Tailings
Tionesta Dam Pennsylvania Forest 154 High Not Available 1940 Flood Risk Reduction
Moss Mine #1 Dam Virginia Dickenson 154 Undetermined Not Rated — Other
Webster Dam Kansas Rooks 154 High Not Available 1956 Flood Risk Reduction
Stockton Dam Missouri Cedar 153 High Not Available 1969 Flood Risk Reduction
Mountain Home Colorado Costilla 153 High Satisfactory 1908 Irrigation
Big Dalton California Los Angeles 153 High Satisfactory 1929 Flood Risk Reduction
Dierks Dam Arkansas Sevier 153 High Not Available 1975 Flood Risk Reduction
Mt. Storm Lake Dam West Virginia Grant 153 High Satisfactory 1964 Other
Russelton Slurry Pond No 3 Pennsylvania Allegheny 153 Low Satisfactory 1967 Other

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.