Colter
Key Takeaway
Colter is classified as high hazard in Arizona. It was completed in 1908 and is 118 years old. Its primary use is irrigation. 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 | 19 ft (taller than 28.3% in AZ) |
| Dam Length | 400 ft |
| Dam Type | Earth |
| Max Storage | 732 acre-ft |
| Normal Storage | 0 acre-ft |
| Surface Area | 100 acres |
| Drainage Area | 6 sq mi |
| Max Discharge | 3,300 cfs |
| Year Completed | 1908 (118 years old) |
| NID ID | AZ00009 |
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
LYMAN WATER CO.
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Colter?
Colter 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 Colter?
Colter is owned by LYMAN WATER CO. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Colter built?
Colter was completed in 1908, making it 118 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 Colter?
Colter serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Colter?
Colter has a dam height of 19 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 Colter last inspected?
Colter was last inspected on September 28, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.