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 951–975 of 1,436
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Ortega Dam Santa Barbara County | 131 | 1956 | High | Not Available |
| Orville Napa County | 28 | 1959 | High | Satisfactory |
| Orvis Stanislaus County | 34 | 1959 | Low | Satisfactory |
| Orwick Dam (Blm) Tehama County | 22 | 1950 | Low | Not Rated |
| O`Shaughnessy Tuolumne County | 312 | 1923 | High | Satisfactory |
| Our House Nevada County | 97 | 1969 | High | Satisfactory |
| Owens Dam Mariposa County | 75 | 1949 | High | Not Available |
| Pacific Grove Monterey County | 32 | 1882 | Low | Satisfactory |
| Packer Lake Sierra County | 11 | 1899 | Significant | Not Rated |
| Pacoima Los Angeles County | 365 | 1929 | High | Satisfactory |
| Paicines San Benito County | 29 | 1912 | High | Satisfactory |
| Palen Sierra County | 25 | 1951 | Low | Satisfactory |
| Palisades Reservoir Orange County | 146 | 1963 | High | Satisfactory |
| Palos Verdes Reservoir Los Angeles County | 82 | 1939 | High | Satisfactory |
| Palo Verde San Diego County | 67 | 1970 | High | Satisfactory |
| Paradise Butte County | 175 | 1957 | High | Satisfactory |
| Paradise Vineyards Sonoma County | 40 | 2003 | Low | Satisfactory |
| Parish Camp Saddle Butte County | 36 | 1968 | High | Fair |
| Patterson Alameda County | 100 | 1962 | Significant | Fair |
| Patterson El Dorado County | 37 | 1960 | High | Satisfactory |
| Patterson Alameda County | 39 | 1962 | High | Fair |
| Payne Modoc County | 12 | 1928 | Low | Satisfactory |
| Peabody Santa Clara County | 63 | 1950 | Significant | Poor |
| Peconom Lassen County | 15 | 1920 | Low | Satisfactory |
| Peju Reservoir No. 2 Napa County | 14 | — | High | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.