Syphon Canyon
Key Takeaway
Syphon Canyon is classified as high hazard in California. It was completed in 1949 and is 77 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 | 59 ft (taller than 66.7% in CA) |
| Dam Length | 843 ft |
| Dam Type | Earth |
| Max Storage | 578 acre-ft |
| Surface Area | 28 acres |
| Year Completed | 1949 (77 years old) |
| NID ID | CA00749 |
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
Irvine Ranch Water District
Public Utility
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Low Hazard 98 ftFrequently Asked Questions
What is the hazard classification of Syphon Canyon?
Syphon Canyon 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 Syphon Canyon?
Syphon Canyon is owned by Irvine Ranch Water District (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Syphon Canyon built?
Syphon Canyon was completed in 1949, making it 77 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 Syphon Canyon?
Syphon Canyon serves the following purposes: Other, Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Syphon Canyon?
Syphon Canyon has a dam height of 59 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 Syphon Canyon last inspected?
Syphon Canyon was last inspected on June 13, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.