Supenau Lake
Key Takeaway
Supenau Lake is classified as significant hazard in Montana. It was completed in 1959 and is 67 years old. Its primary use is fire protection. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 40 ft (taller than 95.1% in MT) |
| Dam Length | 200 ft |
| Dam Type | Earth |
| Max Storage | 293 acre-ft |
| Normal Storage | 196 acre-ft |
| Year Completed | 1959 (67 years old) |
| NID ID | MT03581 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
RUTH E GAGEL
Private
Nearby Dams
Michigan
Hill, MT
Low Hazard 25 ftMission Mountain
Hill, MT
Low Hazard 20 ftMcslay,John Estate
Hill, MT
Low Hazard 20 ftVelk Dam
Hill, MT
Low Hazard 25 ftLohman
Hill, MT
Low Hazard 19 ftCapudj
Hill, MT
Low Hazard 10 ftCalifornia Coulee
Hill, MT
Low Hazard 22 ftFresno
Hill, MT
High Hazard 111 ftFrequently Asked Questions
What is the hazard classification of Supenau Lake?
Supenau Lake is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Supenau Lake?
Supenau Lake is owned by RUTH E GAGEL (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Supenau Lake built?
Supenau Lake was completed in 1959, making it 67 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 Supenau Lake?
Supenau Lake serves the following purposes: Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Supenau Lake?
Supenau Lake has a dam height of 40 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.