Vermilion Valley
Key Takeaway
Vermilion Valley is classified as high hazard in California. It was completed in 1954 and is 72 years old. Its primary use is hydroelectric. 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 | 165 ft (taller than 91.8% in CA) |
| Dam Length | 4,234 ft |
| Dam Type | Earth |
| Max Storage | 140.0K acre-ft |
| Normal Storage | 125.0K acre-ft |
| Surface Area | 1,910 acres |
| Drainage Area | 88 sq mi |
| Max Discharge | 18,800 cfs |
| Year Completed | 1954 (72 years old) |
| NID ID | CA00441 |
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
Southern California Edison Company
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Vermilion Valley?
Vermilion Valley 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 Vermilion Valley?
Vermilion Valley is owned by Southern California Edison Company (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Vermilion Valley built?
Vermilion Valley 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 Vermilion Valley?
Vermilion Valley serves the following purposes: Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Vermilion Valley?
Vermilion Valley has a dam height of 165 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 Vermilion Valley last inspected?
Vermilion Valley was last inspected on August 29, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.