A-1
Key Takeaway
A-1 is classified as high hazard in Arizona. It was completed in 1966 and is 60 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 Length | 400 ft |
| Dam Type | Earth |
| Normal Storage | 271 acre-ft |
| Year Completed | 1966 (60 years old) |
| NID ID | AZ10428 |
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
BIA
Federal Government
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High HazardFrequently Asked Questions
What is the hazard classification of A-1?
A-1 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 A-1?
A-1 is owned by BIA (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was A-1 built?
A-1 was completed in 1966, making it 60 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 A-1?
A-1 serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.