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 1201–1225 of 1,436
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Sierra Madre Los Angeles County | 69 | 1928 | High | Satisfactory |
| Sierra Madre Villa Los Angeles County | 50 | 1958 | High | Satisfactory |
| Sierra Vista Merced County | 12 | 1872 | Low | Satisfactory |
| Silacci Monterey County | 32 | 1915 | Significant | Fair |
| Silt Pond Ventura County | 80 | — | High | Not Available |
| Silt Pond Riverside County | 25 | — | High | Not Available |
| Silt Pond Los Angeles County | 80 | — | High | Not Available |
| Silt / Tails San Bernardino County | 10 | — | Low | Not Available |
| Silva Flat Lassen County | 11 | 1926 | Low | Satisfactory |
| Silver Lake Amador County | 32 | 1876 | High | Poor |
| Silver Lake Los Angeles County | 43 | 1976 | High | Satisfactory |
| Silver Lake Plumas County | 21 | 1906 | High | Satisfactory |
| Sinaloa Lake Ventura County | 30 | 1925 | High | Satisfactory |
| Skinner Clearwell Riverside County | 44 | 1991 | High | Satisfactory |
| Skyrocket Calaveras County | 43 | 1999 | High | Satisfactory |
| Slab Creek El Dorado County | 250 | 1967 | High | Satisfactory |
| Slate Creek Plumas County | 70 | 1961 | Low | Satisfactory |
| Sleepy Hollow No. 2 Sonoma County | 39 | 1949 | High | Satisfactory |
| Slickrock Creek Shasta County | 155 | 2004 | Significant | Satisfactory |
| Sly Creek Butte County | 299 | 1961 | High | Satisfactory |
| Sly Park El Dorado County | 182 | 1955 | High | Satisfactory |
| Small Arms Range Lake Dam Yuba County | 12 | 1962 | Significant | Not Available |
| Small Canyon San Bernardino County | 68 | 1957 | High | Satisfactory |
| Smoke Creek Lassen County | 37 | 1949 | Low | Satisfactory |
| Snag Lake Sierra County | 8 | 1899 | Significant | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.