Upper Wilcox
Key Takeaway
Upper Wilcox is classified as high hazard in California. It was completed in 1930 and is 96 years old. Its primary use is irrigation. 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 | 48 ft (taller than 57.4% in CA) |
| Dam Length | 840 ft |
| Dam Type | Earth |
| Max Storage | 200 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 1 sq mi |
| Year Completed | 1930 (96 years old) |
| NID ID | CA01450 |
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
C.B.S. Development Corporation
Private
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What is the hazard classification of Upper Wilcox?
Upper Wilcox 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 Upper Wilcox?
Upper Wilcox is owned by C.B.S. Development Corporation (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Upper Wilcox built?
Upper Wilcox was completed in 1930, making it 96 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 Upper Wilcox?
Upper Wilcox serves the following purposes: Irrigation, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Upper Wilcox?
Upper Wilcox has a dam height of 48 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 Upper Wilcox last inspected?
Upper Wilcox was last inspected on September 24, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.