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 1276–1300 of 1,436
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Swanzy Lake Solano County | 86 | 1931 | High | Poor |
| Sweetwater Main San Diego County | 112 | 1888 | High | Fair |
| Sworinger Lassen County | 35 | 1961 | High | Satisfactory |
| S-X Modoc County | 45 | 1917 | Low | Satisfactory |
| Sycamore Riverside County | 63 | 1956 | High | Satisfactory |
| Sycamore Canyon Ventura County | 40 | 1981 | High | Satisfactory |
| Sycamore Reservoir Monterey County | 25 | 1961 | Low | Poor |
| Syphon Canyon Orange County | 59 | 1949 | High | Satisfactory |
| Tabeaud Amador County | 136 | 1901 | High | Poor |
| Tahchevah Riverside County | 42 | 1964 | High | Satisfactory |
| Tahquitz Creek Debris Basin Riverside County | 32 | 1991 | High | Satisfactory |
| Tallac El Dorado County | 16 | 1970 | Low | Satisfactory |
| Tamarac Lake Alpine County | 21 | 1905 | Low | Satisfactory |
| Tanner Calaveras County | 35 | 1959 | High | Satisfactory |
| Taylor Creek No. 1 Modoc County | 34 | 1952 | Significant | Satisfactory |
| Tejon Storage 1 Kern County | 32 | 1946 | Low | Satisfactory |
| Tejon Storage 2 Kern County | 67 | 1956 | Low | Satisfactory |
| Telephone Flat Modoc County | 7 | 1931 | Low | Not Rated |
| Tennessee Valley Dam Marin County | 30 | — | High | Not Available |
| Terminal San Luis Obispo County | 53 | 1969 | High | Satisfactory |
| Terminal Northeast Auxiliary Dam Solano County | 28 | 1959 | Low | Not Available |
| Terminus Dam Tulare County | 255 | 1962 | High | Not Available |
| The Hill Ranch Sonoma County | 49 | 1955 | High | Satisfactory |
| Thermalito Afterbay Butte County | 39 | 1967 | High | Fair |
| Thermalito Diversion Butte County | 143 | 1967 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.