Little Dalton Debris Basin
Key Takeaway
Little Dalton Debris Basin is classified as high hazard in California. It was completed in 1960 and is 66 years old. Its primary use is debris control. 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 | 71 ft (taller than 73.4% in CA) |
| Dam Length | 543 ft |
| Dam Type | Earth |
| Max Storage | 234 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 3 sq mi |
| Year Completed | 1960 (66 years old) |
| NID ID | CA01154 |
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
Los Angeles County Department Of Public Works
Local Government
Nearby Dams
Big Dalton Debris Basin
Los Angeles, CA
High Hazard 59 ftMorgan Debris Basin
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High Hazard 37 ftBig Dalton
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High Hazard 153 ftMorris
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High Hazard 245 ftSan Gabriel
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High Hazard 320 ftPuddingstone Diversion
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High Hazard 34 ftSan Dimas
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High Hazard 131 ftWeymouth Memorial Reservoir
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High Hazard 18 ftFrequently Asked Questions
What is the hazard classification of Little Dalton Debris Basin?
Little Dalton Debris Basin 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 Little Dalton Debris Basin?
Little Dalton Debris Basin is owned by Los Angeles County Department Of Public Works (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Little Dalton Debris Basin built?
Little Dalton Debris Basin was completed in 1960, making it 66 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 Little Dalton Debris Basin?
Little Dalton 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 Little Dalton Debris Basin?
Little Dalton Debris Basin has a dam height of 71 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 Little Dalton Debris Basin last inspected?
Little Dalton Debris Basin was last inspected on November 18, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.