Sunset
Key Takeaway
Sunset is classified as high hazard in Arizona. It was completed in 1977 and is 49 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 | 20 ft (taller than 30.6% in AZ) |
| Dam Length | 560 ft |
| Dam Type | Earth |
| Max Storage | 169 acre-ft |
| Normal Storage | 0 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 4,100 cfs |
| Year Completed | 1977 (49 years old) |
| NID ID | AZ00174 |
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
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Sunset?
Sunset 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 Sunset?
Sunset 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 Sunset built?
Sunset was completed in 1977, making it 49 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 Sunset?
Sunset 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 Sunset?
Sunset has a dam height of 20 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 Sunset last inspected?
Sunset was last inspected on June 18, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.