Lake Chabot
Key Takeaway
Lake Chabot is classified as high hazard in California. It was completed in 1870 and is 156 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 | 47 ft (taller than 56.2% in CA) |
| Dam Length | 395 ft |
| Dam Type | Earth |
| Max Storage | 504 acre-ft |
| Surface Area | 61 acres |
| Drainage Area | 6 sq mi |
| Year Completed | 1870 (156 years old) |
| NID ID | CA00145 |
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 of Vallejo
Local Government
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High Hazard 60 ftFrequently Asked Questions
What is the hazard classification of Lake Chabot?
Lake Chabot 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 Lake Chabot?
Lake Chabot is owned by City of Vallejo (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake Chabot built?
Lake Chabot was completed in 1870, making it 156 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 Lake Chabot?
Lake Chabot serves the following purposes: Other, Recreation, Water Supply, Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Lake Chabot?
Lake Chabot has a dam height of 47 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 Lake Chabot last inspected?
Lake Chabot was last inspected on September 1, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.