Wood Ranch
Key Takeaway
Wood Ranch is classified as high hazard in California. It was completed in 1965 and is 61 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 | 146 ft (taller than 89.5% in CA) |
| Dam Length | 1,020 ft |
| Dam Type | Earth |
| Max Storage | 11.0K acre-ft |
| Surface Area | 230 acres |
| Drainage Area | 1 sq mi |
| Year Completed | 1965 (61 years old) |
| NID ID | CA00850 |
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
Calleguas Municipal Water District
Public Utility
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High Hazard 45 ftFrequently Asked Questions
What is the hazard classification of Wood Ranch?
Wood Ranch 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 Wood Ranch?
Wood Ranch is owned by Calleguas Municipal Water District (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Wood Ranch built?
Wood Ranch was completed in 1965, making it 61 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 Wood Ranch?
Wood Ranch serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Wood Ranch?
Wood Ranch has a dam height of 146 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 Wood Ranch last inspected?
Wood Ranch was last inspected on August 31, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.