Cholla Bottom Ash Pond
Key Takeaway
Cholla Bottom Ash Pond is classified as high hazard in Arizona. It was completed in 1978 and is 48 years old. Its primary use is other. 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 | 73 ft (taller than 86.6% in AZ) |
| Dam Length | 4,200 ft |
| Dam Type | Earth |
| Normal Storage | 2.2K acre-ft |
| Drainage Area | 0 sq mi |
| Year Completed | 1978 (48 years old) |
| NID ID | AZ00178 |
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
ARIZONA PUBLIC SERVICE COMPANY, CHOLLA POWER PLANT
Public Utility
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Cholla Bottom Ash Pond?
Cholla Bottom Ash Pond 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 Cholla Bottom Ash Pond?
Cholla Bottom Ash Pond is owned by ARIZONA PUBLIC SERVICE COMPANY, CHOLLA POWER PLANT (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Cholla Bottom Ash Pond built?
Cholla Bottom Ash Pond was completed in 1978, making it 48 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 Cholla Bottom Ash Pond?
Cholla Bottom Ash Pond serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Cholla Bottom Ash Pond?
Cholla Bottom Ash Pond has a dam height of 73 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 Cholla Bottom Ash Pond last inspected?
Cholla Bottom Ash Pond was last inspected on June 22, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.