Diamond Valley Lake Forebay
Key Takeaway
Diamond Valley Lake Forebay is classified as low hazard in California. It was completed in 1999 and is 27 years old. Its primary use is other.
Physical Details
| Dam Height | 22 ft (taller than 18.8% in CA) |
| Dam Length | 4,482 ft |
| Dam Type | Earth |
| Max Storage | 500 acre-ft |
| Surface Area | 31 acres |
| Drainage Area | 0 sq mi |
| Year Completed | 1999 (27 years old) |
| NID ID | CA01413 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
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
Nearby Dams
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High Hazard 12 ftFrequently Asked Questions
What is the hazard classification of Diamond Valley Lake Forebay?
Diamond Valley Lake Forebay is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Diamond Valley Lake Forebay?
Diamond Valley Lake Forebay 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 Diamond Valley Lake Forebay built?
Diamond Valley Lake Forebay was completed in 1999, making it 27 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 Diamond Valley Lake Forebay?
Diamond Valley Lake Forebay serves the following purposes: Other, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Diamond Valley Lake Forebay?
Diamond Valley Lake Forebay has a dam height of 22 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 Diamond Valley Lake Forebay last inspected?
Diamond Valley Lake Forebay was last inspected on February 24, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.