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 901–925 of 1,093
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Scotts Flat Spillway Nevada County | 55 | — | High | Satisfactory |
| Scout Lake Mendocino County | 63 | 1964 | High | Satisfactory |
| Sea Ranch Sonoma County | 61 | 1996 | Low | Satisfactory |
| Searsville San Mateo County | 68 | 1890 | High | Satisfactory |
| Seeger Marin County | 115 | 1961 | High | Satisfactory |
| Sempervirens Santa Cruz County | 42 | 1951 | Significant | Satisfactory |
| Senior Canyon Ventura County | 76 | 1964 | High | Satisfactory |
| Sequoia Lake Fresno County | 51 | 1888 | High | Satisfactory |
| Seven Oaks San Bernardino County | 550 | 1999 | High | Satisfactory |
| Shasta River Siskiyou County | 96 | 1928 | High | Satisfactory |
| Shaver Lake Fresno County | 180 | 1927 | High | Satisfactory |
| Shedd Modoc County | 22 | 1962 | Low | Satisfactory |
| Shelley Siskiyou County | 27 | 1952 | High | Satisfactory |
| Shenandoah Lake Amador County | 33 | 1962 | Low | Satisfactory |
| Shiloh Ranch Sonoma County | 61 | 1991 | High | Satisfactory |
| Shingle Springs Band of Miwok Indians El Dorado County | 33 | 1968 | Significant | Satisfactory |
| Shinn Alameda County | 45 | 1987 | Significant | Satisfactory |
| Shoreline Lake Santa Clara County | 18 | — | Low | Satisfactory |
| Shugru Lassen County | 20 | — | Low | Satisfactory |
| 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 |
| Silva Flat Lassen County | 11 | 1926 | Low | Satisfactory |
| Silver Lake Los Angeles County | 43 | 1976 | High | Satisfactory |
| Silver Lake Plumas County | 21 | 1906 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.