Doney Lake #2 (Powell)
Key Takeaway
Doney Lake #2 (Powell) is classified as high hazard in Montana. It was completed in 1942 and is 84 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 | 14 ft (taller than 15.6% in MT) |
| Dam Length | 190 ft |
| Dam Type | Earth |
| Max Storage | 405 acre-ft |
| Normal Storage | 405 acre-ft |
| Surface Area | 86 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 52 cfs |
| Year Completed | 1942 (84 years old) |
| Year Modified | 2005 |
| NID ID | MT01386 |
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
GORDON MURPHY
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Doney Lake #2 (Powell)?
Doney Lake #2 (Powell) 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 Doney Lake #2 (Powell)?
Doney Lake #2 (Powell) is owned by GORDON MURPHY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Doney Lake #2 (Powell) built?
Doney Lake #2 (Powell) was completed in 1942, making it 84 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 Doney Lake #2 (Powell)?
Doney Lake #2 (Powell) 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 Doney Lake #2 (Powell)?
Doney Lake #2 (Powell) has a dam height of 14 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 Doney Lake #2 (Powell) last inspected?
Doney Lake #2 (Powell) was last inspected on October 6, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.