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 |
|---|---|---|---|---|---|---|---|
| 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.