Dunsmuir Reservoir
Key Takeaway
Dunsmuir Reservoir is classified as high hazard in California. It was completed in 1968 and is 58 years old. Its primary use is water supply. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 43 ft (taller than 51.5% in CA) |
| Dam Length | 2,275 ft |
| Dam Type | Other |
| Max Storage | 197 acre-ft |
| Surface Area | 6 acres |
| Year Completed | 1968 (58 years old) |
| NID ID | CA00174 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
East Bay Municipal Utility District
Public Utility
Nearby Dams
Chabot
Alameda, CA
High Hazard 142 ftNew Upper San Leandro
Alameda, CA
High Hazard 182 ftAlmond
Alameda, CA
High Hazard 30 ftCull Creek
Alameda, CA
High Hazard 55 ftCentral
Alameda, CA
High Hazard 55 ftSan Lorenzo Creek
Alameda, CA
High Hazard 65 ftWard Creek
Alameda, CA
High Hazard 71 ftMoraga
Contra Costa, CA
High Hazard 37 ftFrequently Asked Questions
What is the hazard classification of Dunsmuir Reservoir?
Dunsmuir Reservoir is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Dunsmuir Reservoir?
Dunsmuir Reservoir is owned by East Bay Municipal Utility District (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Dunsmuir Reservoir built?
Dunsmuir Reservoir was completed in 1968, making it 58 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Dunsmuir Reservoir?
Dunsmuir Reservoir serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Dunsmuir Reservoir?
Dunsmuir Reservoir has a dam height of 43 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was Dunsmuir Reservoir last inspected?
Dunsmuir Reservoir was last inspected on March 17, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.