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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
Moccasin Hollow Impoundment West Virginia Boone 310 High Not Rated 1999 Tailings
Dillon Colorado Summit 310 High Satisfactory 1963 Water Supply
Dillon Colorado Summit 310 High Satisfactory 1963 Water Supply
Emerald No. 1 Main Valley Eastern Pennsylvania Greene 310 High Satisfactory — Other
Cobre Main Tailings Dam New Mexico Grant 310 High Satisfactory 1968 Tailings
R.D. Bailey Dam West Virginia Mingo 310 High Not Available 1976 Flood Risk Reduction
Olivenhain California San Diego 309 High Satisfactory 2003 Water Supply
Bartlett Dam Arizona Maricopa 309 High Not Available 1939 Water Supply
Green Mountain Dam Colorado Summit 309 High Not Available 1943 Hydroelectric
Hiwassee Dam North Carolina Cherokee 307 High Not Available 1940 Flood Risk Reduction
3 West Arizona Graham 307 Low Not Available — Tailings
Elephant Butte Dam New Mexico Sierra 306 High Not Available 1916 Flood Risk Reduction
Scotts Branch Slurry Impoundment Kentucky Pike 305 High Not Available — Tailings
Horse Mesa Dam Arizona Maricopa 305 High Not Available 1927 Hydroelectric
Big Branch Impoundment Kentucky Knott 304 High Not Available — Tailings
Monticello Dam California Napa 304 High Not Available 1957 Irrigation
Mathies Mine Refuse Area Pond #2 Pennsylvania Washington 300 High Fair 1982 Other
No. 2 Slurry Pond Ohio Belmont 300 High Not Available — Water Supply
Buckeye Creek Dam Kentucky Perry 300 High Not Available — Water Supply
Gorge Washington Whatcom 300 High Satisfactory 1961 Hydroelectric
Lewis Smith Alabama Walker 300 High Satisfactory 1961 Hydroelectric
Mill 5/6 Center Tailings Storage Facility Nevada Eureka 300 Significant Fair 1991 Tailings
30-Acre Pond Virginia Russell 300 Undetermined Not Rated — Tailings
Strontia Springs Colorado Douglas 299 High Satisfactory 1982 Water Supply
Sly Creek California Butte 299 High Satisfactory 1961 Hydroelectric
Granby Dam Colorado Grand 298 High Not Available 1950 Hydroelectric
Jennings Randolph Dam Maryland Mineral 296 High Not Available 1981 Flood Risk Reduction
McPhee Dam Colorado Montezuma 295 High Not Available 1983 Fish and Wildlife Pond
Left Fork Dam Kentucky Leslie 295 High Not Available — Water Supply
Fugate Fork Dam Kentucky Breathitt 295 High Not Available — Tailings
Seminoe Dam Wyoming Carbon 295 High Not Available 1938 Hydroelectric
Harmon Branch Refuse Disposal Facility West Virginia McDowell 294 High Not Available — Tailings
Blue Lake Alaska City and Borough of Sitka 294 High Satisfactory 1961 Hydroelectric
Upper Stillwater Dam Utah Duchesne 292 High Not Available 1987 Irrigation
Little White Oak Slurry Impoundment West Virginia Logan 290 High Not Available — Tailings
Peter Cave Fresh Water Impoundment Kentucky Martin 290 High Not Available — Other
Dix River Dam Kentucky Mercer 287 High Satisfactory 1925 Hydroelectric
Amistad Dam Texas Val Verde 287 High Poor 1969 Flood Risk Reduction
Millstone Branch Slurry Impoundment No. 1 Kentucky Pike 285 High Not Available — Tailings
Lower Baker Washington Skagit 285 High Poor 1927 Hydroelectric
High Ridge Slurry Impoundment Kentucky Pike 285 High Not Available — Tailings
Centralia Coal Mine Dam No 3d Washington Lewis 285 Low — 1988 Tailings
South Holston Dam Tennessee Sullivan 285 High Not Available 1950 Flood Risk Reduction
Lemon Dam Colorado La Plata 284 High Not Available 1963 Fish and Wildlife Pond
Beardsley California Tuolumne 284 High Fair 1957 Hydroelectric
Diamond Valley Lake California Riverside 284 High Satisfactory 2000 Water Supply
Alamo Dam Arizona Mohave 283 High Not Available 1968 Flood Risk Reduction
Laurel Dam Kentucky Laurel 282 High Not Available 1973 Recreation
Whiskeytown Dam California Shasta 282 High Not Available 1963 Hydroelectric
Bull Shoals Dam Arkansas Baxter 282 High Not Available 1951 Flood Risk Reduction

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.