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 401–425 of 1,093
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Morris Mendocino County | 66 | 1927 | High | Satisfactory |
| Morris Los Angeles County | 245 | 1935 | High | Satisfactory |
| Morning Star Placer County | 44 | 1870 | Low | Satisfactory |
| Morgan Debris Basin Los Angeles County | 37 | 1962 | High | Satisfactory |
| Morgan Napa County | 34 | — | Low | Satisfactory |
| Moraga Contra Costa County | 37 | 1965 | High | Satisfactory |
| Montezuma Solano County | 14 | 2003 | Low | Satisfactory |
| Montana Lake Napa County | 39 | 2009 | Low | Satisfactory |
| Montague No. 2 Siskiyou County | 41 | 1978 | Low | Satisfactory |
| Mono Creek Diversion Fresno County | 64 | 1927 | Low | Satisfactory |
| Mokelumne Hill Calaveras County | 52 | 1973 | Low | Satisfactory |
| Modesto Reservoir Stanislaus County | 36 | 1911 | High | Satisfactory |
| Modesto Effluent Storage Stanislaus County | 20 | 1987 | Significant | Satisfactory |
| Mockingbird Canyon Riverside County | 74 | 1914 | High | Satisfactory |
| Miramar San Diego County | 165 | 1960 | High | Satisfactory |
| Miners Ravine Detention Placer County | 23 | 2007 | Low | Satisfactory |
| Miner'S Ranch Butte County | 90 | 1962 | High | Satisfactory |
| Mineral Hot Springs Lake San Bernardino County | 54 | 1967 | High | Satisfactory |
| Milton Main Nevada County | 37 | 1927 | Low | Satisfactory |
| Mills Sacramento County | 23 | 1952 | High | Satisfactory |
| Milliken Napa County | 110 | 1924 | High | Satisfactory |
| Middle Lindsey Nevada County | 9 | 1870 | Low | Satisfactory |
| Middle Lake Madera County | 26 | 1953 | Low | Satisfactory |
| Middle Fork Interbay Placer County | 71 | 1966 | Low | Satisfactory |
| Middle Fork Brush Creek Sonoma County | 37 | 1961 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.