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 1101–1125 of 1,436
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Rollins Nevada County | 228 | 1965 | High | Satisfactory |
| Ross Calaveras County | 44 | 1892 | Low | Satisfactory |
| Rossmoor No. 1 Orange County | 36 | 1964 | High | Satisfactory |
| Rossmoor Retarding Basin Orange County | 14 | 2002 | Low | Satisfactory |
| Ross No. 1 Shasta County | 30 | 1957 | Significant | Satisfactory |
| Ross No. 2 Shasta County | 29 | 1957 | Significant | Satisfactory |
| Round Canyon Retarding Basin Orange County | 98 | 1994 | Low | Satisfactory |
| Round Corral Dam (Blm) Lassen County | 13 | 1977 | Low | Not Rated |
| Round Mountain Mendocino County | 43 | 1964 | High | Satisfactory |
| Round Valley Lassen County | 45 | 1892 | Significant | Satisfactory |
| Round Valley Butte County | 29 | 1877 | High | Unsatisfactory |
| R. Simoni Irrigation Santa Clara County | 44 | 1961 | Low | Satisfactory |
| Rubber Dam 3 Alameda County | 17 | 1990 | Significant | Satisfactory |
| Rubicon Main El Dorado County | 40 | 1963 | Low | Satisfactory |
| Rubio Debris Basin Los Angeles County | 64 | 1944 | High | Satisfactory |
| Rucker Lake Nevada County | 22 | 1856 | High | Satisfactory |
| Runkle Ventura County | 41 | 1949 | High | Satisfactory |
| Rush Meadows Mono County | 50 | 1925 | High | Poor |
| Russian River No. 1 Sonoma County | 10 | 1963 | Low | Satisfactory |
| Rutherford #2 San Diego County | 15 | 1952 | Low | Not Rated |
| R. W. Matthews Trinity County | 150 | 1962 | High | Satisfactory |
| Rye Tehama County | 37 | 1959 | Low | Satisfactory |
| Rye Grass Swale Modoc County | 20 | 1923 | Low | Satisfactory |
| Sabrina Inyo County | 70 | 1908 | High | Fair |
| Sack Madera County | 9 | 1946 | Low | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.