Upper Stone Canyon
Key Takeaway
Upper Stone Canyon is classified as low hazard in California. It was completed in 1954 and is 72 years old. Its primary use is water supply.
Physical Details
| Dam Height | 111 ft (taller than 84.2% in CA) |
| Dam Length | 740 ft |
| Dam Type | Earth |
| Max Storage | 425 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 1 sq mi |
| Year Completed | 1954 (72 years old) |
| NID ID | CA00097 |
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
Stone Canyon
Los Angeles, CA
High Hazard 188 ftUpper Franklin Dam
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Significant Hazard 40 ftLower Franklin No. 2
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Low Hazard 49 ftLower Franklin
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High Hazard 103 ftSepulveda Dam
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High Hazard 57 ftGreystone Reservoir
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High Hazard 75 ftEncino
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High Hazard 168 ftRiviera Reservoir
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High Hazard 40 ftFrequently Asked Questions
What is the hazard classification of Upper Stone Canyon?
Upper Stone Canyon 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 Upper Stone Canyon?
Upper Stone Canyon 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 Upper Stone Canyon built?
Upper Stone Canyon was completed in 1954, making it 72 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 Upper Stone Canyon?
Upper Stone Canyon 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 Upper Stone Canyon?
Upper Stone Canyon has a dam height of 111 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 Upper Stone Canyon last inspected?
Upper Stone Canyon was last inspected on September 1, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.