Clearwell Reservoir
Key Takeaway
Clearwell Reservoir is classified as high hazard in Arizona. It was completed in 1992 and is 34 years old. Its primary use is water supply. 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 | 77 ft (taller than 87.3% in AZ) |
| Dam Length | 500 ft |
| Dam Type | Earth |
| Normal Storage | 178 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 0 sq mi |
| Year Completed | 1992 (34 years old) |
| NID ID | AZ00210 |
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
CITY OF TUCSON, TUCSON WATER
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Clearwell Reservoir?
Clearwell Reservoir 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 Clearwell Reservoir?
Clearwell Reservoir is owned by CITY OF TUCSON, TUCSON WATER (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Clearwell Reservoir built?
Clearwell Reservoir was completed in 1992, making it 34 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 Clearwell Reservoir?
Clearwell 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 Clearwell Reservoir?
Clearwell Reservoir has a dam height of 77 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 Clearwell Reservoir last inspected?
Clearwell Reservoir was last inspected on February 11, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.