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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
Copper Basin California San Bernardino 184 High Satisfactory 1938 Water Supply
Sly Park California El Dorado 182 High Satisfactory 1955 Water Supply
New Upper San Leandro California Alameda 182 High Satisfactory 1977 Other
Newell California Santa Cruz 182 High Satisfactory 1960 Water Supply
Morena California San Diego 181 High Poor 1912 Water Supply
Coyote Valley Dam California Mendocino 180 High Not Available 1959 Flood Risk Reduction
Shaver Lake California Fresno 180 High Satisfactory 1927 Hydroelectric
Upper Chiquita California Orange 177 High Satisfactory 2012 Water Supply
Scotts Flat California Nevada 175 High Fair 1948 Fire Protection, Stock, Or ...
Paradise California Butte 175 High Satisfactory 1957 Water Supply
Bowman Main California Nevada 175 High Satisfactory 1926 Irrigation
Virginia Ranch California Yuba 172 High Satisfactory 1963 Irrigation
Diemer No. 8 California Orange 172 Significant Satisfactory 1968 Water Supply
Camanche Main California San Joaquin 171 High Satisfactory 1964 Water Supply
Big Creek Dam No. 1 California Fresno 170 High Fair 1917 Hydroelectric
San Pablo California Contra Costa 170 High Satisfactory 1920 Water Supply
Homestake Tailings California Lake 169 High Satisfactory 1990 Water Supply
Gibraltar California Santa Barbara 169 High Satisfactory 1920 Other
Encino California Los Angeles 168 High Satisfactory 1924 Water Supply
Junction California El Dorado 168 Significant Satisfactory 1962 Hydroelectric
Priest California Tuolumne 168 High Satisfactory 1923 Other
Los Banos Creek Detention Dam California Merced 167 High Not Available 1965 Flood Risk Reduction
Prosser Creek Dam California Nevada 166 High Not Available 1962 Water Supply
Lopez California San Luis Obispo 166 High Satisfactory 1969 Water Supply
Balch Afterbay California Fresno 165 High Satisfactory 1928 Hydroelectric
Maerkle California San Diego 165 High Satisfactory 1963 Water Supply
Folsom Mormon Island Auxiliary Dam California Sacramento 165 High Not Available 1955 Flood Risk Reduction
Vermilion Valley California Fresno 165 High Poor 1954 Hydroelectric
Miramar California San Diego 165 High Satisfactory 1960 Water Supply
Dutch Flat Afterbay California Nevada 165 Low Satisfactory 1965 Irrigation
Big Creek Dam No. 3 California Fresno 165 High Satisfactory 1913 Hydroelectric
Rector Creek California Napa 164 High Satisfactory 1946 Water Supply
Matilija California Ventura 163 High Poor 1949 Other
Sutherland California San Diego 162 High Satisfactory 1954 Other
Mark Edson California El Dorado 162 High Satisfactory 1962 Water Supply
Poway California San Diego 162 High Satisfactory 1971 Water Supply
Barrett California San Diego 161 High Poor 1922 Water Supply
Garvey Reservoir California Los Angeles 160 High Satisfactory 1954 Water Supply
San Antonio Dam California San Bernardino 160 High Not Available 1956 Flood Risk Reduction
Ponderosa California Butte 160 Low Satisfactory 1962 Hydroelectric
Juncal California Santa Barbara 160 High Satisfactory 1930 Other
Brick Flat Pit Containment California Shasta 160 Low Satisfactory 1994 Water Supply
Westlake Reservoir California Los Angeles 158 High Satisfactory 1972 Water Supply
Keswick Dam California Shasta 157 High Not Available 1950 Flood Risk Reduction
Santa Ynez Canyon California Los Angeles 157 High Satisfactory 1968 Other
Black Butte Dam California Tehama 156 High Not Available 1963 Flood Risk Reduction
North Fork Dam California Placer 155 Significant Not Available 1939 Debris Control
Slickrock Creek California Shasta 155 Significant Satisfactory 2004 Water Supply
Big Creek Dam No. 6 California Madera 155 High Satisfactory 1923 Hydroelectric
Big Dalton California Los Angeles 153 High Satisfactory 1929 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.