Green Road Basin
Key Takeaway
Green Road Basin is classified as high hazard in Arizona. It was completed in 1995 and is 31 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 | 11 ft (taller than 7.8% in AZ) |
| Dam Length | 6,703 ft |
| Dam Type | Earth |
| Normal Storage | 254 acre-ft |
| Surface Area | 36 acres |
| Year Completed | 1995 (31 years old) |
| NID ID | AZ00344 |
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
PINAL COUNTY
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Green Road Basin?
Green Road Basin 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 Green Road Basin?
Green Road Basin is owned by PINAL COUNTY (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Green Road Basin built?
Green Road Basin was completed in 1995, making it 31 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 Green Road Basin?
Green Road Basin 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 Green Road Basin?
Green Road Basin has a dam height of 11 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 Green Road Basin last inspected?
Green Road Basin was last inspected on February 25, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.