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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
Arjay Slurry Impoundment Kentucky Bell 355 High Not Available — Water Supply
Campbells Creek Slurry Impoundment West Virginia Nicholas 355 High Not Rated 1999 Tailings
Holden #22 Slurry Impoundment West Virginia Logan 355 High Not Available — Tailings
Abiquiu Dam New Mexico Rio Arriba 354 High Not Available 1963 Flood Risk Reduction
Pardee California Calaveras 352 High Fair 1929 Water Supply
Sierrita Arizona Pima 350 High Not Available — Tailings
Gross Colorado Boulder 350 High Fair 1955 Hydroelectric
Four Mile Branch Slurry Dam Kentucky Knott 350 High Not Available — Tailings
Buffalo Bill Dam Wyoming Park 350 High Not Available 1910 Fish and Wildlife Pond
Arrowrock Dam Idaho Boise 350 High Not Available 1915 Flood Risk Reduction
William L. Jess Dam Oregon Jackson 345 High Not Available 1976 Flood Risk Reduction
Beartree Branch Slurry Impoundment Kentucky Harlan 345 High Not Available — Water Supply
Hills Creek Dam Oregon Lane 341 High Not Available 1962 Flood Risk Reduction
Folsom Dam California Sacramento 340 High Not Available 1956 Hydroelectric
Asamera Cannon Mine Tailings Dam Washington Chelan 340 High Satisfactory 1986 Flood Risk Reduction
Bennetts Branch Slurry Dam Kentucky Whitley 340 High Not Available — Water Supply
Castaic California Los Angeles 340 High Poor 1973 Water Supply
Lucky Peak Dam Idaho Ada 340 High Not Available 1955 Flood Risk Reduction
San Vicente California San Diego 338 High Satisfactory 1943 Other
Bailey Mine Area No. 3 Slurry Pennsylvania Greene 337 High Satisfactory 2014 Other
Casitas Dam California Ventura 334 High Not Available 1959 Irrigation
Watauga Dam Tennessee Carter 332 High Not Available 1948 Flood Risk Reduction
Brushy Fork Slurry Dam Kentucky Knott 332 High Not Available — Water Supply
Ridgway Dam Colorado Ouray 330 High Not Available 1987 Flood Risk Reduction
Alder Washington Pierce 330 High Satisfactory 1945 Hydroelectric
Hells Canyon Idaho Adams 330 High Satisfactory 1967 Hydroelectric
Right Fork Slurry Dam Kentucky Perry 329 High Not Available — Tailings
Salt Springs California Calaveras 328 High Satisfactory 1931 Hydroelectric
Cerrillos Dam Puerto Rico Ponce 323 High Satisfactory 1992 Flood Risk Reduction
Crystal Dam Colorado Montrose 323 High Not Available 1977 Hydroelectric
Yale Washington Cowlitz 323 High Fair 1953 Hydroelectric
Ruedi Dam Colorado Pitkin 322 High Not Available 1968 Hydroelectric
Trace Branch Slurry Impoundment West Virginia Boone 320 High Not Rated 1992 Tailings
Parker Dam Arizona La Paz 320 High Not Available 1938 Hydroelectric
Little Camp Slurry Impoundment Kentucky Bell 320 High Not Available — Water Supply
Friant Dam California Madera 319 High Not Available 1942 Flood Risk Reduction
Tieton Dam Washington Yakima 319 High Not Available 1925 Flood Risk Reduction
Bailey No. 8 Slurry Impoundment Pennsylvania Greene 317 High Not Rated — Other
Donnells California Tuolumne 317 High Satisfactory 1958 Hydroelectric
Bailey Mine Slurry Impoundment Pennsylvania Greene 315 High Satisfactory 1984 Other
Cherry Valley California Tuolumne 315 High Fair 1956 Other
Courtright California Fresno 315 High Satisfactory 1958 Hydroelectric
Merwin Washington Cowlitz 313 High Fair 1931 Hydroelectric
O`Shaughnessy California Tuolumne 312 High Satisfactory 1923 Water Supply
Upper Baker Washington Whatcom 312 High Fair 1959 Hydroelectric
Emerald No. 1 Main Valley Eastern Pennsylvania Greene 310 High Satisfactory — Other
Cobre Main Tailings Dam New Mexico Grant 310 High Satisfactory 1968 Tailings
Dillon Colorado Summit 310 High Satisfactory 1963 Water Supply
Moccasin Hollow Impoundment West Virginia Boone 310 High Not Rated 1999 Tailings
Dillon Colorado Summit 310 High Satisfactory 1963 Water Supply

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.