Riggs Reservoir
Key Takeaway
Riggs Reservoir is classified as significant hazard in Arizona. It was completed in 1929 and is 97 years old. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 31 ft (taller than 55.7% in AZ) |
| Dam Length | 750 ft |
| Dam Type | Earth |
| Max Storage | 52 acre-ft |
| Normal Storage | 39 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 30 cfs |
| Year Completed | 1929 (97 years old) |
| NID ID | AZ00158 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
CITY OF SAFFORD
Local Government
Nearby Dams
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High Hazard 91 ftFrequently Asked Questions
What is the hazard classification of Riggs Reservoir?
Riggs Reservoir is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Riggs Reservoir?
Riggs Reservoir is owned by CITY OF SAFFORD (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Riggs Reservoir built?
Riggs Reservoir was completed in 1929, making it 97 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 Riggs Reservoir?
Riggs Reservoir 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 Riggs Reservoir?
Riggs Reservoir has a dam height of 31 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 Riggs Reservoir last inspected?
Riggs Reservoir was last inspected on November 7, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.