Usibelli No. 2
Key Takeaway
Usibelli No. 2 is classified as high hazard in California. It was completed in 1973 and is 53 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 | 26 ft (taller than 24.8% in CA) |
| Dam Length | 3,600 ft |
| Dam Type | Earth |
| Max Storage | 900 acre-ft |
| Surface Area | 56 acres |
| Drainage Area | 0 sq mi |
| Year Completed | 1973 (53 years old) |
| NID ID | CA01140 |
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
Usibelli Coal Mine, Inc.
Private
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Significant Hazard 70 ftFrequently Asked Questions
What is the hazard classification of Usibelli No. 2?
Usibelli No. 2 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 Usibelli No. 2?
Usibelli No. 2 is owned by Usibelli Coal Mine, Inc. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Usibelli No. 2 built?
Usibelli No. 2 was completed in 1973, making it 53 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 Usibelli No. 2?
Usibelli No. 2 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 Usibelli No. 2?
Usibelli No. 2 has a dam height of 26 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 Usibelli No. 2 last inspected?
Usibelli No. 2 was last inspected on October 12, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.