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Browse Dams

1,534 dams in the National Inventory of Dams.

National Inventory of Dams

Browse 1,534 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
Oroville California Butte 770 High Fair 1968 Flood Risk Reduction
New Bullards Bar California Yuba 645 High Satisfactory 1970 Hydroelectric
New Melones Dam California Calaveras 625 High Not Available 1979 Hydroelectric
Shasta Dam California Shasta 602 High Not Available 1945 Hydroelectric
Don Pedro Main California Tuolumne 585 High Satisfactory 1971 Hydroelectric
Seven Oaks California San Bernardino 550 High Satisfactory 1999 Flood Risk Reduction
Trinity Dam California Trinity 538 High Not Available 1962 Hydroelectric
Exchequer Main California Mariposa 490 High Fair 1966 Hydroelectric
Union Valley California El Dorado 455 High Satisfactory 1962 Hydroelectric
Pine Flat Dam California Fresno 440 High Not Available 1954 Flood Risk Reduction
Pyramid California Los Angeles 422 High Fair 1974 Water Supply
Mammoth Pool California Madera 411 High Satisfactory 1960 Hydroelectric
Hell Hole California Placer 410 High Fair 1966 Irrigation
B.F. Sisk Dam California Merced 382 High Not Available 1967 Hydroelectric
San Gabriel California Los Angeles 381 High Satisfactory 1937 Hydroelectric
Pacoima California Los Angeles 365 High Satisfactory 1929 Flood Risk Reduction
Warm Springs Dam California Sonoma 356 High Not Available 1983 Flood Risk Reduction
Pardee California Calaveras 352 High Fair 1929 Water Supply
Folsom Dam California Sacramento 340 High Not Available 1956 Hydroelectric
Castaic California Los Angeles 340 High Poor 1973 Water Supply
San Vicente California San Diego 338 High Satisfactory 1943 Other
Casitas Dam California Ventura 334 High Not Available 1959 Irrigation
Salt Springs California Calaveras 328 High Satisfactory 1931 Hydroelectric
Friant Dam California Madera 319 High Not Available 1942 Flood Risk Reduction
Donnells California Tuolumne 317 High Satisfactory 1958 Hydroelectric
Cherry Valley California Tuolumne 315 High Fair 1956 Other
Courtright California Fresno 315 High Satisfactory 1958 Hydroelectric
O`Shaughnessy California Tuolumne 312 High Satisfactory 1923 Water Supply
Olivenhain California San Diego 309 High Satisfactory 2003 Water Supply
Monticello Dam California Napa 304 High Not Available 1957 Irrigation
Sly Creek California Butte 299 High Satisfactory 1961 Hydroelectric
Beardsley California Tuolumne 284 High Fair 1957 Hydroelectric
Diamond Valley Lake California Riverside 284 High Satisfactory 2000 Water Supply
Whiskeytown Dam California Shasta 282 High Not Available 1963 Hydroelectric
Harry L. Englebright Dam California Yuba 280 High Not Available 1941 Debris Control
Bradbury Dam California Santa Barbara 279 High Not Available 1953 Irrigation
Lake Spaulding No. 1 California Nevada 277 High Fair 1912 Hydroelectric
Briones California Contra Costa 273 High Satisfactory 1964 Other
Cogswell California Los Angeles 266 High Satisfactory 1935 Flood Risk Reduction
New Spicer Meadow California Tuolumne 265 High Satisfactory 1989 Hydroelectric
Mathews California Riverside 264 High Satisfactory 1938 Water Supply
Wishon Main California Fresno 260 High Satisfactory 1958 Hydroelectric
Terminus Dam California Tulare 255 High Not Available 1962 Flood Risk Reduction
Mccloud California Shasta 255 High Fair 1965 Hydroelectric
Nacimiento California San Luis Obispo 255 High Poor 1956 Hydroelectric
Sugar Pine California Placer 251 High Satisfactory 1981 Other
Slab Creek California El Dorado 250 High Satisfactory 1967 Hydroelectric
Big Creek Dam No. 7 California Madera 250 High Satisfactory 1951 Hydroelectric
Cedar Springs California San Bernardino 249 High Fair 1971 Water Supply
Morris California Los Angeles 245 High Satisfactory 1935 Other

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.