Fool Hollow
Key Takeaway
Fool Hollow is classified as high hazard in Arizona. It was completed in 1956 and is 70 years old. Its primary use is recreation. 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 | 60 ft (taller than 82.7% in AZ) |
| Dam Length | 500 ft |
| Dam Type | Rockfill |
| Max Storage | 5.6K acre-ft |
| Normal Storage | 3.2K acre-ft |
| Surface Area | 152 acres |
| Drainage Area | 102 sq mi |
| Max Discharge | 15,300 cfs |
| Year Completed | 1956 (70 years old) |
| NID ID | AZ00051 |
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
ARIZONA GAME & FISH DEPARTMENT
State Government
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Significant Hazard 38 ftFrequently Asked Questions
What is the hazard classification of Fool Hollow?
Fool Hollow 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 Fool Hollow?
Fool Hollow is owned by ARIZONA GAME & FISH DEPARTMENT (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Fool Hollow built?
Fool Hollow was completed in 1956, making it 70 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 Fool Hollow?
Fool Hollow serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Fool Hollow?
Fool Hollow has a dam height of 60 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 Fool Hollow last inspected?
Fool Hollow was last inspected on October 1, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.