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 451–475 of 821
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Magalia Butte County | 103 | 1918 | High | Poor |
| Magnolia Nevada County | 68 | 1967 | High | Satisfactory |
| Malibou Lake Club Los Angeles County | 44 | 1923 | High | Satisfactory |
| Mallacomes Sonoma County | 57 | 1951 | High | Satisfactory |
| Mallard Contra Costa County | 30 | 1930 | High | Satisfactory |
| Maloney Contra Costa County | 107 | 1960 | High | Satisfactory |
| Mammoth Pool Madera County | 411 | 1960 | High | Satisfactory |
| Mammoth Reservoir Placer County | 23 | 1851 | High | Satisfactory |
| Manhattan Creek El Dorado County | 32 | 1952 | High | Satisfactory |
| Manzanita Diversion Madera County | 30 | 1917 | High | Satisfactory |
| Maria San Joaquin County | 48 | 2003 | High | Satisfactory |
| Mariposa Dam Mariposa County | 88 | 1948 | High | Not Available |
| Mark Edson El Dorado County | 162 | 1962 | High | Satisfactory |
| Marshburn Retarding Basin Orange County | 27 | 1998 | High | Satisfactory |
| Marsh Creek Contra Costa County | 59 | 1963 | High | Satisfactory |
| Martinez Dam Contra Costa County | 62 | 1947 | High | Not Available |
| Martis Creek Dam Nevada County | 113 | 1972 | High | Not Available |
| Mary Street Riverside County | 40 | 1981 | High | Satisfactory |
| Matanzas Creek Sonoma County | 95 | 1963 | High | Satisfactory |
| Mathews Riverside County | 264 | 1938 | High | Satisfactory |
| Matilija Ventura County | 163 | 1949 | High | Poor |
| Maxville Napa County | 37 | 1953 | High | Satisfactory |
| Mccloud Shasta County | 255 | 1965 | High | Fair |
| Mcguire Mendocino County | 27 | 1967 | High | Satisfactory |
| Mcswain Mariposa County | 97 | 1966 | High | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.