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 426–450 of 1,093
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Middlefield Reservoir Alameda County | 147 | 1958 | High | Satisfactory |
| Middle Cooperstown Tuolumne County | 24 | 1947 | Low | Satisfactory |
| Michigan Bar No. 2 Sacramento County | 36 | 1983 | Low | Satisfactory |
| Michigan Bar No. 1 Sacramento County | 17 | 1989 | Significant | Satisfactory |
| Metz Road Detention Basin Riverside County | 12 | 1981 | High | Satisfactory |
| Metzger Mariposa County | 30 | 1956 | Low | Satisfactory |
| Metcalf Napa County | 34 | 1974 | High | Satisfactory |
| Merlo Sonoma County | 74 | 1982 | High | Satisfactory |
| Mendota Diversion Madera County | 23 | 1917 | Significant | Satisfactory |
| Mendocino 3 Upper Mendocino County | 49 | 1915 | High | Satisfactory |
| Mendiboure Lassen County | 30 | 1949 | High | Satisfactory |
| Mem Tehama County | 41 | 1976 | High | Satisfactory |
| Melrose Avenue San Diego County | 57 | 1998 | High | Satisfactory |
| Meadow Lane Sonoma County | 30 | 1979 | High | Satisfactory |
| Meadow Lake Alpine County | 74 | 1903 | Low | Satisfactory |
| Meadow Lake Nevada County | 38 | 1855 | Low | Satisfactory |
| Mcnab Mendocino County | 40 | 1947 | Significant | Satisfactory |
| Mcmahon Mariposa County | 52 | 1957 | Low | Satisfactory |
| Mckays Point Diversion Tuolumne County | 242 | 1989 | Significant | Satisfactory |
| Mcguire Mendocino County | 27 | 1967 | High | Satisfactory |
| Mccreary Lake County | 20 | 1961 | Low | Satisfactory |
| Mccoy Flat Lassen County | 21 | 1891 | Low | Satisfactory |
| Mccarty Calaveras County | 19 | 1938 | Low | Satisfactory |
| Mcbrien Modoc County | 12 | 1880 | Low | Satisfactory |
| Maxville Napa County | 37 | 1953 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.