Weymouth Memorial Reservoir
Key Takeaway
Weymouth Memorial Reservoir is classified as high hazard in California. It was completed in 1966 and is 60 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 | 18 ft (taller than 12.6% in CA) |
| Dam Length | 2,400 ft |
| Dam Type | Other |
| Max Storage | 151 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 0 sq mi |
| Year Completed | 1966 (60 years old) |
| NID ID | CA00222 |
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
Metropolitan Water District Of Southern California
Public Utility
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High Hazard 59 ftFrequently Asked Questions
What is the hazard classification of Weymouth Memorial Reservoir?
Weymouth Memorial 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 Weymouth Memorial Reservoir?
Weymouth Memorial Reservoir is owned by Metropolitan Water District Of Southern California (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Weymouth Memorial Reservoir built?
Weymouth Memorial Reservoir was completed in 1966, making it 60 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 Weymouth Memorial Reservoir?
Weymouth Memorial 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 Weymouth Memorial Reservoir?
Weymouth Memorial Reservoir has a dam height of 18 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 Weymouth Memorial Reservoir last inspected?
Weymouth Memorial Reservoir was last inspected on January 27, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.