Angwin
Key Takeaway
Angwin is classified as high hazard in California. It was completed in 1967 and is 59 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 | 35 ft (taller than 38.2% in CA) |
| Dam Length | 621 ft |
| Dam Type | Earth |
| Max Storage | 156 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 0 sq mi |
| Year Completed | 1967 (59 years old) |
| NID ID | CA01038 |
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
Pacific Union College
Private
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High Hazard 35 ftFrequently Asked Questions
What is the hazard classification of Angwin?
Angwin 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 Angwin?
Angwin is owned by Pacific Union College (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Angwin built?
Angwin was completed in 1967, making it 59 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 Angwin?
Angwin serves the following purposes: Water Supply, Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Angwin?
Angwin has a dam height of 35 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 Angwin last inspected?
Angwin was last inspected on March 9, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.