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 701–725 of 1,093
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Grizzly Forebay Plumas County | 98 | 1928 | High | Satisfactory |
| Grizzly Creek Plumas County | 39 | 1915 | High | Satisfactory |
| Grizzly Creek Butte County | 50 | 1964 | Significant | Satisfactory |
| Grinding Rock Tuolumne County | 55 | 1979 | Low | Satisfactory |
| Greystone Reservoir Los Angeles County | 75 | 1970 | High | Satisfactory |
| Greeott Sonoma County | 40 | 1951 | Significant | Satisfactory |
| Green Verdugo Los Angeles County | 118 | 1953 | High | Satisfactory |
| Green Valley Lake San Bernardino County | 56 | 1925 | Low | Satisfactory |
| Green Valley Lake Solano County | 40 | 1956 | High | Satisfactory |
| Green Valley Mariposa County | 33 | 1957 | Low | Satisfactory |
| Green Oaks #1 San Mateo County | 39 | 1936 | Low | Satisfactory |
| Greenhorn Siskiyou County | 35 | 1960 | High | Satisfactory |
| Graven Modoc County | 15 | 1917 | Low | Satisfactory |
| Grass Valley San Bernardino County | 35 | 1964 | High | Satisfactory |
| Grant Company 2 Santa Clara County | 27 | 1927 | High | Satisfactory |
| Granlees Sacramento County | 17 | 1921 | Low | Satisfactory |
| Graham Lake County | 39 | 1959 | Low | Satisfactory |
| Goodwin Calaveras County | 101 | 1912 | High | Satisfactory |
| Goodhart Canyon Detention Basin Riverside County | 15 | 1999 | High | Satisfactory |
| Goffinet Amador County | 38 | 1954 | High | Satisfactory |
| Glenoaks 968 Reservoir Los Angeles County | 62 | 1949 | High | Satisfactory |
| Gilmore San Joaquin County | 28 | 1918 | Significant | Satisfactory |
| Giffen Reservoir Fresno County | 29 | 1971 | High | Satisfactory |
| Gibraltar Santa Barbara County | 169 | 1920 | High | Satisfactory |
| Gerle Creek El Dorado County | 74 | 1962 | Low | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.