James H. Turner
Key Takeaway
James H. Turner is classified as high hazard in California. It was completed in 1964 and is 62 years old. Its primary use is water supply. 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 | 193 ft (taller than 94.1% in CA) |
| Dam Length | 2,160 ft |
| Dam Type | Earth |
| Max Storage | 50.5K acre-ft |
| Surface Area | 825 acres |
| Drainage Area | 40 sq mi |
| Year Completed | 1964 (62 years old) |
| NID ID | CA00132 |
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 and County of San Francisco
Local Government
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High Hazard 33 ftFrequently Asked Questions
What is the hazard classification of James H. Turner?
James H. Turner 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 James H. Turner?
James H. Turner is owned by City and County of San Francisco (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was James H. Turner built?
James H. Turner was completed in 1964, making it 62 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 James H. Turner?
James H. Turner 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 James H. Turner?
James H. Turner has a dam height of 193 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 James H. Turner last inspected?
James H. Turner was last inspected on March 14, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.