Signal Butte FRS
Key Takeaway
Signal Butte FRS is classified as high hazard in Arizona. It was completed in 1988 and is 38 years old. Its primary use is flood risk reduction. 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 | 22 ft (taller than 36.8% in AZ) |
| Dam Length | 7,038 ft |
| Dam Type | Earth |
| Max Storage | 2.8K acre-ft |
| Normal Storage | 0 acre-ft |
| Surface Area | 140 acres |
| Drainage Area | 106 sq mi |
| Max Discharge | 2,450 cfs |
| Year Completed | 1988 (38 years old) |
| NID ID | AZ00205 |
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
FLOOD CONTROL DISTRICT OF MARICOPA COUNTY
Local Government
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High Hazard 224 ftFrequently Asked Questions
What is the hazard classification of Signal Butte FRS?
Signal Butte FRS 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 Signal Butte FRS?
Signal Butte FRS is owned by FLOOD CONTROL DISTRICT OF MARICOPA COUNTY (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Signal Butte FRS built?
Signal Butte FRS was completed in 1988, making it 38 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 Signal Butte FRS?
Signal Butte FRS serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Signal Butte FRS?
Signal Butte FRS has a dam height of 22 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 Signal Butte FRS last inspected?
Signal Butte FRS was last inspected on December 1, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.