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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
Lopez Dam California Los Angeles 50 High Not Available 1954 Debris Control
Hartzell California San Luis Obispo 50 Significant Satisfactory 1965 Water Supply
Wilson Debris Basin California Los Angeles 50 High Satisfactory 1961 Debris Control
Rush Meadows California Mono 50 High Poor 1925 Hydroelectric
Wuest California San Diego 50 Low Satisfactory 1928 Water Supply
Cactus Basin #4 California San Bernardino 50 High Satisfactory 2022 Flood Risk Reduction
Harrison Street California Riverside 50 High Satisfactory 1954 Flood Risk Reduction
Sunfler California Tehama 50 Low Satisfactory 1976 Other
J. W. Wisda California Los Angeles 50 Low Satisfactory 1958 Recreation
Camanche Dike No. 6 California San Joaquin 50 High Satisfactory — Water Supply
Langtry California Lake 50 Low Satisfactory 1992 Water Supply
Chollas California San Diego 50 High Satisfactory 1901 Other
Grizzly Creek California Butte 50 Significant Satisfactory 1964 Water Supply
Camanche Dike No. 3 California San Joaquin 50 High Satisfactory — Water Supply
Camanche Dike No. 5 California San Joaquin 50 High Satisfactory — Water Supply
Sierra Madre Villa California Los Angeles 50 High Satisfactory 1958 Debris Control
Lake Ada Rose California Mendocino 50 High Satisfactory 1964 Water Supply
Hansen Recreational Lake California Los Angeles 50 Low Satisfactory 1999 Water Supply
Big Dry Creek California Fresno 50 High Satisfactory 1948 Flood Risk Reduction
Lake La Verne California Napa 50 Significant Satisfactory 1956 Water Supply
Moskowite California Napa 50 Low Satisfactory 1955 Water Supply
Quail California Los Angeles 50 High Satisfactory 1981 Water Supply
Guenoc Lake California Lake 50 High Satisfactory 1928 Other
Hughes California Monterey 50 Low Poor 1966 Fire Protection, Stock, Or ...
Bidwell Bar Canyon Saddle California Butte 50 High Satisfactory 1968 Flood Risk Reduction
Robbs Peak California El Dorado 50 Low Satisfactory 1963 Hydroelectric
Box Springs California Riverside 49 High Satisfactory 1960 Flood Risk Reduction
Chinquapin California Mendocino 49 Significant Satisfactory 1971 Water Supply
Lake Leticia California Napa 49 High Satisfactory 1960 Water Supply
Steidlmayer #3 California Sutter 49 Low Satisfactory 1961 Water Supply
The Hill Ranch California Sonoma 49 High Satisfactory 1955 Water Supply
Henne California Napa 49 High Satisfactory 1959 Water Supply
Big Sage California Modoc 49 High Satisfactory 1921 Water Supply
Lagunita California Sonoma 49 High Satisfactory 1954 Water Supply
Yucaipa No. 2 California San Bernardino 49 High Satisfactory 1978 Water Supply
Ler Franklin No. 2 California Los Angeles 49 Low Satisfactory 1982 Water Supply
Morris S. Jones California Los Angeles 49 High Satisfactory 1952 Water Supply
San Sevaine Basin #5 California San Bernardino 49 High Satisfactory 2004 Debris Control
San Felipe Ranch California Santa Clara 49 Low Satisfactory 1959 Water Supply
East Hicks Canyon Retarding Basin California Orange 49 Low Satisfactory 1997 Debris Control
Brooktrails 3 North California Mendocino 49 High Satisfactory 1970 Other
Mendocino 3 Upper California Mendocino 49 High Satisfactory 1915 Other
Maria California San Joaquin 48 High Satisfactory 2003 Water Supply
Lundy Lake California Mono 48 High Satisfactory 1911 Hydroelectric
Upper Wilcox California Madera 48 High Satisfactory 1930 Irrigation
Ione Canal California Amador 48 Low Satisfactory 1962 Other
Nevada City Raw Water Reservoir California Nevada 48 Low Satisfactory 1980 Water Supply
West Side Detention Dike 4 California Riverside 48 Low Not Available 1968 Flood Risk Reduction
Hj Mills Reclamation California Riverside 48 Significant Satisfactory 1996 Water Supply
Lagunitas California Marin 48 Significant Satisfactory 1872 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.