Yarnell Debris Basin
Key Takeaway
Yarnell Debris Basin is classified as low hazard in California. It was completed in 1963 and is 63 years old. Its primary use is debris control.
Physical Details
| Dam Height | 42 ft (taller than 50.1% in CA) |
| Dam Length | 1,290 ft |
| Dam Type | Earth |
| Max Storage | 78 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 2 sq mi |
| Year Completed | 1963 (63 years old) |
| NID ID | CA00099 |
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
City of Los Angeles Department of Water And Power
Local Government
Nearby Dams
Upper San Fernando
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Low Hazard 78 ftLower San Fernando
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High Hazard 125 ftSchoolhouse Debris Basin
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High Hazard 38 ftWilson Debris Basin
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High Hazard 50 ftLopez Dam
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High Hazard 50 ftFrequently Asked Questions
What is the hazard classification of Yarnell Debris Basin?
Yarnell Debris Basin 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 Yarnell Debris Basin?
Yarnell Debris Basin 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 Yarnell Debris Basin built?
Yarnell Debris Basin was completed in 1963, making it 63 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 Yarnell Debris Basin?
Yarnell Debris Basin serves the following purposes: Debris Control, Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Yarnell Debris Basin?
Yarnell Debris Basin has a dam height of 42 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 Yarnell Debris Basin last inspected?
Yarnell Debris Basin was last inspected on May 19, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.