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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
Thompson Mtis Idaho Custer 789 High Fair 1982 Tailings
Chess Refuse Disposal Area No. 1 West Virginia Boone 780 High Not Available — Tailings
Oroville California Butte 770 High Fair 1968 Flood Risk Reduction
Delbarton Slurry Impoundment West Virginia Mingo 760 High Not Rated 2004 Other
Hoover Dam Nevada Clark 730 High Not Available 1935 Hydroelectric
Dworshak Dam Idaho Clearwater 717 High Not Available 1973 Flood Risk Reduction
Glen Canyon Dam Arizona Coconino 710 High Not Available 1963 Hydroelectric
Abner Fork Dam Kentucky Harlan 700 High Not Available — Water Supply
Sidney Slurry Impoundment Kentucky Pike 665 High Not Available — Tailings
Long Fork Slurry Impoundment Kentucky Pike 665 High Not Available — Tailings
Killarney Slurry Impoundment West Virginia Raleigh 657 High Not Available — Tailings
New Bullards Bar California Yuba 645 High Satisfactory 1970 Hydroelectric
New Melones Dam California Calaveras 625 High Not Available 1979 Hydroelectric
Jake Gore Slurry Impoundment West Virginia Boone 610 High Not Available — Tailings
Mossyrock Washington Lewis 606 High Unsatisfactory 1968 Hydroelectric
Brushy Fork Impoundment West Virginia Greenbrier 605 High Not Rated 1996 Tailings
Shasta Dam California Shasta 602 High Not Available 1945 Hydroelectric
Don Pedro Main California Tuolumne 585 High Satisfactory 1971 Hydroelectric
Yankee Doodle Tailings Dam Montana Silver Bow 570 High Satisfactory 1972 Other
Hungry Horse Dam Montana Flathead 564 High Not Available 1953 Flood Risk Reduction
Aldrich Branch Slurry Impoundment West Virginia Mingo 560 High Not Available — Tailings
Seven Oaks California San Bernardino 550 High Satisfactory 1999 Flood Risk Reduction
Grand Coulee Dam Washington Okanogan 550 High Not Available 1941 Flood Risk Reduction
Half Mile Dam Kentucky Leslie 545 High Not Available — Water Supply
Ross Washington Whatcom 540 High Satisfactory 1949 Hydroelectric
Rocklick Slurry Impoundment West Virginia Boone 540 High Not Available — Tailings
Trinity Dam California Trinity 538 High Not Available 1962 Hydroelectric
Bloss Branch Slurry Dam Kentucky Clay 535 High Not Available — Tailings
Yellowtail Dam Montana Big Horn 525 High Not Available 1966
Jarrells Branch Slurry Impoundment West Virginia Boone 520 High Not Available — Tailings
North Block Tailings Impoundment Dam Nevada Eureka 520 High Not Rated 1993 Tailings
Cougar Dam Oregon Lane 519 High Not Available 1963 Flood Risk Reduction
Flaming Gorge Dam Utah Daggett 502 High Not Available 1964 Flood Risk Reduction
Exchequer Main California Mariposa 490 High Fair 1966 Hydroelectric
Rock House Branch Slurry Impoundment West Virginia Logan 482 High Not Available — Tailings
Oldhouse Branch Slurry Impoundment Kentucky Letcher 481 High Not Available — Tailings
Adams Fork Slurry Dam Kentucky Leslie 480 High Not Available — Water Supply
Fontana Dam North Carolina Graham 480 High Not Available 1944 Flood Risk Reduction
Sukey Branch Slurry Impoundment Kentucky Pike 478 High Not Available — Tailings
Lotts Branch Slurry Impoundment West Virginia Boone 478 High Not Available — Tailings
Morrow Point Dam Colorado Montrose 468 High Not Available 1968 Hydroelectric
Carters Main Dam Georgia Murray 464 High Not Available 1974 Hydroelectric
Detroit Dam Oregon Linn 463 High Not Available 1953 Flood Risk Reduction
Bath County P S Upper Reservoir - Upper Dam Virginia Bath 460 High Fair 1984 Hydroelectric
Anderson Ranch Dam Idaho Elmore 456 High Not Available 1950 Flood Risk Reduction
Union Valley California El Dorado 455 High Satisfactory 1962 Hydroelectric
Rob Fork Slurry Impoundment Kentucky Pike 450 High Not Available — Tailings
Gum Branch Dam Tennessee Anderson 447 High Fair 1981 Tailings
Cow Branch Slurry Impoundment Kentucky Pike 442 High Not Available — Tailings
Oldhouse Branch Impoundment No. 3 West Virginia Logan 440 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.