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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.

Clear
Name State County Height (ft) Hazard Condition Year Purpose
Copper Cove California Calaveras 42 Low Satisfactory 1993 Water Supply
Alpine Auxiliary No. 3 California Alpine 42 Low Satisfactory 1891 Hydroelectric
Halsey Forebay No. 1 California Placer 42 High Satisfactory 1913 Hydroelectric
San Marcos California San Luis Obispo 42 High Satisfactory 1964 Other
Yucaipa No. 1 California San Bernardino 42 High Satisfactory 1978 Water Supply
Lake Spaulding No. 2 California Nevada 42 High Fair 1916 Hydroelectric
Williamson No. 1 California El Dorado 42 Significant Poor 1926 Water Supply
Tahchevah California Riverside 42 High Satisfactory 1964 Debris Control
Channel Diversion Dike California Los Angeles 42 Low Satisfactory 1940 Flood Risk Reduction
Vista Del Mar Detention Basin California Contra Costa 42 High Satisfactory 2011 Flood Risk Reduction
Yarnell Debris Basin California Los Angeles 42 Low Satisfactory 1963 Debris Control
Richard L. Schafer Dam - Frazier Dike California Tulare 42 Significant Not Available 1961 Flood Risk Reduction
Leland California Contra Costa 41 High Satisfactory 1955 Water Supply
Scotts Canyon California Napa 41 Significant Satisfactory 1948 Other
Montague No. 2 California Siskiyou 41 Low Satisfactory 1978 Water Supply
Spring California Madera 41 High Satisfactory 1971 Water Supply
Flers California Calaveras 41 High Satisfactory 1957 Water Supply
Runkle California Ventura 41 High Satisfactory 1949 Flood Risk Reduction
Agua Chinon California Orange 41 High Satisfactory 1998 Debris Control
Fly-In-Acres California Calaveras 41 Significant Satisfactory 1953 Water Supply
Jameson Vineyards California Napa 41 Significant Satisfactory — Water Supply
Nash California Shasta 41 High Satisfactory 1960 Water Supply
Sunnymead Ranch California Riverside 41 High Satisfactory 1985 Water Supply
Loma Rica Airport California Nevada 41 High Satisfactory 1965 Water Supply
Auburn Lake Trails California El Dorado 41 Significant Satisfactory 1978 Water Supply
Mem California Tehama 41 High Satisfactory 1976 Irrigation
Castle California Merced 40 High Satisfactory 1991 Flood Risk Reduction
Fresh Water California Los Angeles 40 High Not Available — Water Supply
Lawler California Sonoma 40 Low Satisfactory 1910 Water Supply
Hall Mill Dam California Riverside 40 High Not Rated 1949 Other
Preston Forebay California Amador 40 Low Satisfactory 1892 Other
Greeott California Sonoma 40 Significant Satisfactory 1951 Water Supply
Donovan California Sonoma 40 High Satisfactory 1953 Water Supply
Mcnab California Mendocino 40 Significant Satisfactory 1947 Other
Fern Lake California Sonoma 40 High Satisfactory 1921 Water Supply
Rodden Lake California Stanislaus 40 Low Satisfactory 1916 Other
Cuyamaca California San Diego 40 High Satisfactory 1887 Other
10 Mg Walteria California Los Angeles 40 High Satisfactory 1953 Water Supply
Beggs California San Joaquin 40 Low Satisfactory 1971 Water Supply
Richardson California Sonoma 40 Low Satisfactory 1974 Water Supply
Paradise Vineyards California Sonoma 40 Low Satisfactory 2003 Other
Rinconada Reservoir California Santa Clara 40 High Satisfactory 1969 Water Supply
Trout Lake California Siskiyou 40 Significant Satisfactory 1960 Water Supply
Will Lake #1 California Napa 40 High Satisfactory 2004 Other
Buena Vista Winery California Sonoma 40 Significant Satisfactory 1971 Water Supply
Deer Creek California Napa 40 Low Satisfactory 1980 Water Supply
Preston California Amador 40 High Satisfactory 1949 Water Supply
Lake Theodore California Placer 40 High Satisfactory 1896 Other
Laurel Creek California San Mateo 40 High Satisfactory 1969 Flood Risk Reduction
Upper Franklin Dam California Los Angeles 40 Significant Not Available 1915 Flood Risk Reduction

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.