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.

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Name State County Height (ft) Hazard Condition Year Purpose
French Lake California Nevada 95 High Satisfactory 1859 Irrigation
Bethany Forebay California Alameda 95 High Satisfactory 1961 Water Supply
Railroad Canyon California Riverside 94 High Satisfactory 1928 Water Supply
Concow California Butte 94 High Satisfactory 1925 Water Supply
Alisal Creek California Santa Barbara 93 High Satisfactory 1971 Water Supply
Reservoir A California Placer 93 High Satisfactory 1973 Water Supply
Santa Fe Dam California Los Angeles 92 High Not Available 1949 Flood Risk Reduction
Weber California El Dorado 92 High Satisfactory 1924 Water Supply
Bear Dam California Mariposa 92 High Not Available 1954 Flood Risk Reduction
Coyote Creek California Lake 92 High Satisfactory 1968 Water Supply
Deer Creek Diversion California Nevada 92 High Satisfactory 1928 Debris Control
El Dorado Forebay California El Dorado 91 High Fair 1923 Hydroelectric
Thermalito Forebay California Butte 91 High Satisfactory 1967 Hydroelectric
Fish Barrier California Butte 91 Low Satisfactory 1964 Water Supply
Lewiston Dam California Trinity 91 High Not Available 1963 Water Supply
Camanche Dike No. 1 California Calaveras 90 High Satisfactory — Water Supply
Lake Gregory California San Bernardino 90 High Satisfactory 1938 Water Supply
Chevy Chase 1290 Reservoir California Los Angeles 90 High Satisfactory 1940 Water Supply
Miner'S Ranch California Butte 90 High Satisfactory 1962 Hydroelectric
Phoenix Lake California Marin 90 High Satisfactory 1907 Water Supply
Calero California Santa Clara 90 High Poor 1935 Water Supply
Day Creek Debris Basin California San Bernardino 90 High Satisfactory 1988 Debris Control
Camanche Dike No. 2 California San Joaquin 90 High Satisfactory — Water Supply
Stampede Dike California Sierra 90 High Not Available 1970 Flood Risk Reduction
Ralston Afterbay California Placer 89 High Fair 1966 Irrigation
Lake Madigan California Solano 89 High Satisfactory 1908 Water Supply
O'Neill Forebay Dam California Merced 88 High Not Available 1967 Hydroelectric
Dove Canyon California Orange 88 High Poor 1989 Flood Risk Reduction
C.L. Tilden Park California Contra Costa 88 High Satisfactory 1938 Other
Devil Canyon Second Afterbay California San Bernardino 88 High Satisfactory 1995 Water Supply
Mariposa Dam California Mariposa 88 High Not Available 1948 Flood Risk Reduction
Pleasant Valley California Inyo 87 High Satisfactory 1957 Other
Pine Creek California Contra Costa 87 High Satisfactory 1956 Flood Risk Reduction
Grant Lake California Mono 87 High Poor 1940 Water Supply
Philbrook Main California Butte 87 High Satisfactory 1926 Hydroelectric
Brea Dam - Saddle Dike 1 California Orange 87 High Not Available 1942 Flood Risk Reduction
Spencer Lake California San Mateo 87 High Satisfactory 1876 Flood Risk Reduction
Nimbus Dam California Sacramento 87 High Not Available 1955 Fish and Wildlife Pond
Brea Dam California Orange 87 High Not Available 1942 Flood Risk Reduction
Upper Hollywood California Los Angeles 87 Low Satisfactory 1933 Other
Buckhorn Dam California Trinity 87 High Not Available 1991
Heitz California Napa 87 High Satisfactory 1991 Other
Caples Lake Main California Alpine 86 High Satisfactory 1923 Hydroelectric
Swanzy Lake California Solano 86 High Poor 1931 Water Supply
Foothill Park California Santa Clara 86 High Satisfactory 1988 Water Supply
Ler Sunset Debris Basin California Los Angeles 86 High Satisfactory 1963 Debris Control
Imperial Diversion Dam California Imperial 85 High Not Available 1938 Irrigation
Mast California Mendocino 85 Significant Satisfactory 1963 Water Supply
San Marcos California San Diego 85 High Satisfactory 1958 Water Supply
Wide Canyon California Riverside 84 High Satisfactory 1968 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.