Pleasant Valley
Key Takeaway
Pleasant Valley is classified as high hazard in California. It was completed in 1957 and is 69 years old. Its primary use is other. 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 | 87 ft (taller than 78.3% in CA) |
| Dam Length | 530 ft |
| Dam Type | Earth |
| Max Storage | 3.8K acre-ft |
| Surface Area | 115 acres |
| Drainage Area | 575 sq mi |
| Year Completed | 1957 (69 years old) |
| NID ID | CA00098 |
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
City of Los Angeles Department of Water And Power
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Pleasant Valley?
Pleasant Valley 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 Pleasant Valley?
Pleasant Valley is owned by City of Los Angeles Department of Water And Power (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Pleasant Valley built?
Pleasant Valley was completed in 1957, making it 69 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 Pleasant Valley?
Pleasant Valley serves the following purposes: Other, Hydroelectric, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Pleasant Valley?
Pleasant Valley has a dam height of 87 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 Pleasant Valley last inspected?
Pleasant Valley was last inspected on November 17, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.