California Dams
1,436 dams tracked by the National Inventory of Dams
Total Dams
1,436
High Hazard
821
57.2%
Poor / Unsatisfactory
66
Average Age
77 yrs
Hazard Classification
High821 (57.2%)
Significant160 (11.1%)
Low455 (31.7%)
Condition Assessment
Satisfactory1,093 (76.1%)
Fair106 (7.4%)
Poor / Unsatisfactory66 (4.6%)
Not Rated171 (11.9%)
Federal
163
State
50
Local
322
Private
617
Tallest Dams
- New Bullards Bar645 ft
- New Melones Dam625 ft
- Shasta Dam602 ft
- Don Pedro Main585 ft
- Seven Oaks550 ft
High Hazard Dams
- New Bullards BarHigh
- New Melones DamHigh
- Shasta DamHigh
- Don Pedro MainHigh
- Seven OaksHigh
Poor Condition Dams
- CastaicPoor
- NacimientoPoor
- AndersonUnsatisfactory
- El CapitanPoor
- Santa FeliciaPoor
All Dams in California
Showing 126–150 of 1,093
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Sunset North Basin San Francisco County | 74 | 1938 | High | Satisfactory |
| Sun Ridge Meadow El Dorado County | 18 | 1990 | Low | Satisfactory |
| Sunflower Tehama County | 50 | 1976 | Low | Satisfactory |
| Summit Reservoir San Francisco County | 39 | 1954 | High | Satisfactory |
| Summit Reservoir Solano County | 124 | 1968 | High | Satisfactory |
| Sulphur Creek Orange County | 42 | 1966 | High | Satisfactory |
| Sugar Pine Placer County | 251 | 1981 | High | Satisfactory |
| Straza El Dorado County | 62 | 1971 | Low | Satisfactory |
| Stough Debris Basin Los Angeles County | 46 | 1961 | High | Satisfactory |
| Stone Canyon Los Angeles County | 188 | 1924 | High | Satisfactory |
| Stockton Creek Mariposa County | 95 | 1950 | High | Satisfactory |
| Stinson Weir Fresno County | 14 | 1910 | Low | Satisfactory |
| Stewart Canyon Debris Basin Ventura County | 34 | 1963 | High | Satisfactory |
| Stevenson Ranch Los Angeles County | 54 | 2004 | High | Satisfactory |
| Stevenot Calaveras County | 70 | 1987 | High | Satisfactory |
| Steidlmayer #3 Sutter County | 49 | 1961 | Low | Satisfactory |
| Steamboat Lake Siskiyou County | 22 | 1968 | Significant | Satisfactory |
| Stanley A. Mahr Reservoir San Diego County | 79 | 1981 | High | Satisfactory |
| Stanislaus Forebay West Tuolumne County | 60 | 1908 | Low | Satisfactory |
| Stanford Heights San Francisco County | 31 | 1928 | High | Satisfactory |
| Spring Valley Ranch Placer County | 39 | 1958 | High | Satisfactory |
| Spring Valley Lake County | 37 | 1968 | High | Satisfactory |
| Spring Madera County | 41 | 1971 | Significant | Satisfactory |
| Spooner Lassen County | 17 | 1906 | Low | Satisfactory |
| Spencer Lake San Mateo County | 87 | 1876 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.