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 1251–1275 of 1,436
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Stewart Canyon Debris Basin Ventura County | 34 | 1963 | High | Satisfactory |
| St. Helena Lower Napa County | 44 | 1878 | High | Poor |
| Stinson Weir Fresno County | 14 | 1910 | Low | Satisfactory |
| Stockton Creek Mariposa County | 95 | 1950 | High | Satisfactory |
| Stone Canyon Los Angeles County | 188 | 1924 | High | Satisfactory |
| Stony Gorge Dam Glenn County | 139 | 1928 | High | Not Available |
| Stough Debris Basin Los Angeles County | 46 | 1961 | High | Satisfactory |
| Strawberry Tuolumne County | 143 | 1916 | High | Fair |
| Straza El Dorado County | 62 | 1971 | Low | Satisfactory |
| Sugar Pine Placer County | 251 | 1981 | High | Satisfactory |
| Sulphur Creek Orange County | 42 | 1966 | High | Satisfactory |
| Summit Reservoir San Francisco County | 39 | 1954 | High | Satisfactory |
| Summit Reservoir Solano County | 124 | 1968 | High | Satisfactory |
| Sunflower Tehama County | 50 | 1976 | Low | Satisfactory |
| Sunnymead Ranch Riverside County | 41 | 1985 | High | Poor |
| Sun Ridge Meadow El Dorado County | 18 | 1990 | Low | Satisfactory |
| Sunset North Basin San Francisco County | 74 | 1938 | High | Satisfactory |
| Sunset South Basin San Francisco County | 34 | 1960 | High | Satisfactory |
| Surveyors Valley Modoc County | 8 | 1955 | Low | Not Rated |
| Sutherland San Diego County | 162 | 1954 | High | Satisfactory |
| Sutro Reservoir San Francisco County | 55 | 1952 | High | Satisfactory |
| Suttenfield Sonoma County | 76 | 1938 | High | Fair |
| Svcsd Reclamation Pond 1 Sonoma County | 17 | 1990 | Significant | Satisfactory |
| Svcsd Reclamation Pond 2 Sonoma County | 19 | 1990 | Significant | Satisfactory |
| Swan Nevada County | 59 | 1967 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.