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Browse Dams

12,547 dams in the National Inventory of Dams.

National Inventory of Dams

Browse 12,547 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
Thompson Mtis Idaho Custer 789 High Fair 1982 Tailings
Oroville California Butte 770 High Fair 1968 Flood Risk Reduction
Exchequer Main California Mariposa 490 High Fair 1966 Hydroelectric
Bath County P S Upper Reservoir - Upper Dam Virginia Bath 460 High Fair 1984 Hydroelectric
Gum Branch Dam Tennessee Anderson 447 High Fair 1981 Tailings
Round Butte Oregon Jefferson 440 High Fair 1964 Hydroelectric
Pyramid California Los Angeles 422 High Fair 1974 Water Supply
Swift No. 1 Washington Skamania 412 High Fair 1958 Hydroelectric
Hell Hole California Placer 410 High Fair 1966 Irrigation
Little Blue Run Pennsylvania Beaver 400 High Fair 1977 Other
Brownlee Oregon Baker 395 High Fair 1958 Hydroelectric
Boundary Washington Pend Oreille 360 High Fair 1967 Hydroelectric
Pardee California Calaveras 352 High Fair 1929 Water Supply
Fort Knox Tailings Dam Alaska Fairbanks North Star Borough 350 Significant Fair 1996 Water Supply
Gross Colorado Boulder 350 High Fair 1955 Hydroelectric
Yale Washington Cowlitz 323 High Fair 1953 Hydroelectric
Cherry Valley California Tuolumne 315 High Fair 1956 Other
Merwin Washington Cowlitz 313 High Fair 1931 Hydroelectric
Upper Baker Washington Whatcom 312 High Fair 1959 Hydroelectric
Mathies Mine Refuse Area Pond #2 Pennsylvania Washington 300 High Fair 1982 Other
Mill 5/6 Center Tailings Storage Facility Nevada Eureka 300 Significant Fair 1991 Tailings
Beardsley California Tuolumne 284 High Fair 1957 Hydroelectric
Lake Spaulding No. 1 California Nevada 277 High Fair 1912 Hydroelectric
Cushman No 1 Washington Mason 272 High Fair 1926 Hydroelectric
Carlin Gold Tailings Dam Nevada Eureka 270 Low Fair 1991 Tailings
Cortez Area 28 Tsf Cell 4 Dam Nevada Lander 270 Low Fair — Tailings
Noxon Rapids Montana Sanders 260 High Fair 1960 Hydroelectric
Mccloud California Shasta 255 High Fair 1965 Hydroelectric
Coolidge Arizona Gila 250 High Fair 1931 Irrigation
Cedar Springs California San Bernardino 249 High Fair 1971 Water Supply
Clifford D. Craig Memorial Dam Virginia Roanoke 241 High Fair — Water Supply
Indian Valley California Lake 225 High Fair 1975 Irrigation
Long Lake Washington Stevens 225 High Fair 1915 Hydroelectric
Salmon Falls Idaho Twin Falls 224 High Fair 1911 Other
Del Valle California Alameda 222 High Fair 1968 Flood Risk Reduction
A-A Tails Dam Nevada Eureka 220 Significant Fair 1989 Tailings
Cortez Area 28 Tsf Dam Nevada Lander 215 Low Fair 1997 Tailings
Lake Fort Smith Dam Arkansas Poinsett 212 High Fair 1936 Water Supply
Mill 5/6 West Tails Storage Facility Nevada Eureka 210 Low Fair 2011 Tailings
Oxbow Idaho Adams 209 High Fair 1961 Hydroelectric
James J. Lenihan California Santa Clara 208 High Fair 1953 Water Supply
Greybull Valley (1st Enl.) Wyoming Park 207 High Fair 2000 Irrigation
Wanapum Washington Kittitas 206 High Fair 1965 Hydroelectric
Camp Far West California Yuba 203 High Fair 1963 Irrigation
San Antonio California Monterey 202 High Fair 1965 Flood Risk Reduction
Cornwall Tailings Pennsylvania Lebanon 200 High Fair 1961 Tailings
Development No. 1 Dam Oregon Multnomah 200 High Fair 1929 Water Supply
Selis Ksanka Qlispe (Skq) Montana Lake 200 High Fair 1938 Hydroelectric
Tolt River - South Fork Washington King 200 High Fair 1962 Water Supply
Giroux Wash Tsf Dam Nevada White Pine 198 High Fair 1995 Tailings

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.