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Browse Dams

16,894 dams in the National Inventory of Dams.

National Inventory of Dams

Browse 16,894 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
Bartlett Dam Arizona Maricopa 309 High Not Available 1939 Water Supply
Olivenhain California San Diego 309 High Satisfactory 2003 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
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
Monticello Dam California Napa 304 High Not Available 1957 Irrigation
Big Branch Impoundment Kentucky Knott 304 High Not Available — Tailings
No. 2 Slurry Pond Ohio Belmont 300 High Not Available — Water Supply
Lewis Smith Alabama Walker 300 High Satisfactory 1961 Hydroelectric
Mathies Mine Refuse Area Pond #2 Pennsylvania Washington 300 High Fair 1982 Other
Gorge Washington Whatcom 300 High Satisfactory 1961 Hydroelectric
Buckeye Creek Dam Kentucky Perry 300 High Not Available — Water Supply
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
Seminoe Dam Wyoming Carbon 295 High Not Available 1938 Hydroelectric
Fugate Fork Dam Kentucky Breathitt 295 High Not Available — Tailings
Left Fork Dam Kentucky Leslie 295 High Not Available — Water Supply
Blue Lake Alaska City and Borough of Sitka 294 High Satisfactory 1961 Hydroelectric
Harmon Branch Refuse Disposal Facility West Virginia McDowell 294 High Not Available — Tailings
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
South Holston Dam Tennessee Sullivan 285 High Not Available 1950 Flood Risk Reduction
Lower Baker Washington Skagit 285 High Poor 1927 Hydroelectric
Millstone Branch Slurry Impoundment No. 1 Kentucky Pike 285 High Not Available — Tailings
High Ridge Slurry Impoundment Kentucky Pike 285 High Not Available — Tailings
Beardsley California Tuolumne 284 High Fair 1957 Hydroelectric
Lemon Dam Colorado La Plata 284 High Not Available 1963 Fish and Wildlife Pond
Diamond Valley Lake California Riverside 284 High Satisfactory 2000 Water Supply
Alamo Dam Arizona Mohave 283 High Not Available 1968 Flood Risk Reduction
Whiskeytown Dam California Shasta 282 High Not Available 1963 Hydroelectric
Bull Shoals Dam Arkansas Baxter 282 High Not Available 1951 Flood Risk Reduction
Laurel Dam Kentucky Laurel 282 High Not Available 1973 Recreation
Slurry Impoundment 401 Kentucky Breathitt 280 High Not Available — Water Supply
Questa Tailings Dam 1 New Mexico Taos 280 High Satisfactory 1980 Tailings
Harry L. Englebright Dam California Yuba 280 High Not Available 1941 Debris Control
Merrill Creek Main Dam New Jersey Warren 280 High Satisfactory 1988 Other
Bradbury Dam California Santa Barbara 279 High Not Available 1953 Irrigation
Mansfield Dam Texas Travis 278 High Satisfactory 1942 Flood Risk Reduction
Lake Spaulding No. 1 California Nevada 277 High Fair 1912 Hydroelectric
Lookout Point Dam Oregon Lane 276 High Not Available 1953 Flood Risk Reduction
Cushman No 2 Washington Mason 275 High Satisfactory 1930 Hydroelectric

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.