Window Rock
Key Takeaway
Window Rock is classified as high hazard in Arizona. It was completed in 1936 and is 90 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 Length | 221 ft |
| Dam Type | Concrete |
| Normal Storage | 210 acre-ft |
| Year Completed | 1936 (90 years old) |
| NID ID | AZ11002 |
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
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Window Rock?
Window Rock 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 Window Rock?
Window Rock is owned by BIA (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Window Rock built?
Window Rock was completed in 1936, making it 90 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 Window Rock?
Window Rock serves the following purposes: Flood Risk Reduction, Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Window Rock last inspected?
Window Rock was last inspected on September 27, 2012. Inspection dates indicate when a formal review occurred, not the results of that inspection.