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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
Pine Flat Dam California Fresno 440 High Not Available 1954 Flood Risk Reduction
Round Butte Oregon Jefferson 440 High Fair 1964 Hydroelectric
New Waddell Dam Arizona Maricopa 440 High Not Available 1992 Flood Risk Reduction
Oldhouse Branch Impoundment No. 3 West Virginia Logan 440 High Not Available — Tailings
Turkeypen Branch Slurry Impoundment Kentucky Harlan 425 High Not Available — Tailings
Mud Mountain Dam Washington King 425 High Not Available 1948 Flood Risk Reduction
Pyramid California Los Angeles 422 High Fair 1974 Water Supply
Razorblade Branch Slurry Impoundment Kentucky Letcher 422 High Not Available — Tailings
Libby Dam Montana Lincoln 422 High Not Available 1973 Hydroelectric
Burke Branch Slurry Impoundment Kentucky Pike 421 High Not Available — Tailings
Owyhee Dam Oregon Malheur 417 High Not Available 1932 Irrigation
Ten Mile Pond #3 Dam Colorado Summit 416 High Not Available — Tailings
Bean Hollow Slurry Impoundment (Plant 1 Crdf) West Virginia Boone 415 High Not Available — Tailings
Swift No. 1 Washington Skamania 412 High Fair 1958 Hydroelectric
Big Groundhog Slurry Impoundment Kentucky Pike 412 High Not Available — Tailings
Mammoth Pool California Madera 411 High Satisfactory 1960 Hydroelectric
Hell Hole California Placer 410 High Fair 1966 Irrigation
Harmar Refuse Bank Pennsylvania Allegheny 410 High Satisfactory 1957 Other
Four Seam Slurry Dam Kentucky Perry 410 High Not Available — Tailings
Tinsley Branch Refuse Impoundment West Virginia Logan 405 Undetermined Not Rated 2005 Tailings
Navajo Dam New Mexico San Juan 402 High Not Available 1963 Flood Risk Reduction
Little Blue Run Pennsylvania Beaver 400 High Fair 1977 Other
1 West Arizona Graham 400 Low Not Available — Tailings
Brownlee Oregon Baker 395 High Fair 1958 Hydroelectric
Jordanelle Dam Utah Wasatch 391 High Not Available 1993 Water Supply
Shumate Creek Slurry Impoundment West Virginia Raleigh 390 High Not Available — Tailings
Blue Mesa Dam Colorado Gunnison 390 High Not Available 1966 Flood Risk Reduction
Summersville Dam West Virginia Nicholas 390 High Not Available 1965 Flood Risk Reduction
Diablo Washington Whatcom 389 High Satisfactory 1929 Hydroelectric
Jocassee South Carolina Pickens 385 High Satisfactory 1973 Hydroelectric
Cherry Tree Hollow Refuse Facility West Virginia Boone 385 High Not Available — Tailings
Amonate Slurry Impoundment West Virginia McDowell 384 High Not Available — Tailings
B.F. Sisk Dam California Merced 382 High Not Available 1967 Hydroelectric
San Gabriel California Los Angeles 381 High Satisfactory 1937 Hydroelectric
Cumberland No. 1 Slurry Pond 1 Pennsylvania Greene 380 High Satisfactory 1984 Other
Grizzly Gulch Tailings Dam South Dakota Lawrence 380 High Satisfactory 1998 Tailings
Green Peter Dam Oregon Linn 378 High Not Available 1967 Flood Risk Reduction
Clay Hollow Slurry Impoundment Kentucky Letcher 375 High Not Available — Tailings
Upper Lick Branch Slurry Impoundment Kentucky Pike 370 High Not Available — Tailings
Cumberland No. 2 Slurry Pond Pennsylvania Greene 370 High Satisfactory — Other
Right Fork Dam Kentucky Harlan 370 High Not Available — Water Supply
Ragland Slurry Impoundment West Virginia Mingo 370 High Not Available — Tailings
Stonecoal Branch Slurry Dam Kentucky Perry 365 High Not Available — Tailings
Jacks Branch Slurry Impoundment West Virginia Boone 365 High Not Available — Tailings
Pacoima California Los Angeles 365 High Satisfactory 1929 Flood Risk Reduction
Cunningham Hollow Slurry Impoundment West Virginia Marshall 363 High Not Rated 2003 Other
Lovely Branch Slurry Dam Kentucky Leslie 360 High Not Available — Water Supply
Boundary Washington Pend Oreille 360 High Fair 1967 Hydroelectric
Bad Creek Main Dam South Carolina Oconee 360 High Satisfactory 1991 Hydroelectric
Ben Creek Slurry Impoundment West Virginia Mingo 358 High Not Available — 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.