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 876–900 of 1,436
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Miner'S Ranch Butte County | 90 | 1962 | High | Satisfactory |
| Miners Ravine Detention Placer County | 23 | 2007 | Low | Satisfactory |
| Miramar San Diego County | 165 | 1960 | High | Satisfactory |
| Misselbeck Shasta County | 96 | 1920 | High | Poor |
| Moccasin Lower Tuolumne County | 60 | 1930 | High | Fair |
| Mockingbird Canyon Riverside County | 74 | 1914 | High | Satisfactory |
| Modesto Effluent Storage Stanislaus County | 20 | 1987 | Significant | Satisfactory |
| Modesto Reservoir Stanislaus County | 36 | 1911 | High | Satisfactory |
| Mojave River Dam San Bernardino County | 200 | 1971 | High | Not Available |
| Mokelumne Hill Calaveras County | 52 | 1973 | Low | Satisfactory |
| Mono Creek Diversion Fresno County | 64 | 1927 | Low | Satisfactory |
| Montague No. 2 Siskiyou County | 41 | 1978 | Low | Satisfactory |
| Montana Lake Napa County | 39 | 2009 | Low | Satisfactory |
| Montezuma Solano County | 14 | 2003 | Low | Satisfactory |
| Monticello Dam Napa County | 304 | 1957 | High | Not Available |
| Moraga Contra Costa County | 37 | 1965 | High | Satisfactory |
| Morena San Diego County | 181 | 1912 | High | Poor |
| Morgan Napa County | 34 | — | Low | Satisfactory |
| Morgan Debris Basin Los Angeles County | 37 | 1962 | High | Satisfactory |
| Morning Star Placer County | 44 | 1870 | Low | Satisfactory |
| Morris Mendocino County | 66 | 1927 | High | Satisfactory |
| Morris Los Angeles County | 245 | 1935 | High | Satisfactory |
| Morris S. Jones Los Angeles County | 49 | 1952 | High | Satisfactory |
| Moskowite Napa County | 50 | 1955 | Low | Satisfactory |
| Mount Stoneman Sacramento County | 43 | 1937 | Low | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.