Keep Cool
Key Takeaway
Keep Cool is classified as significant hazard in Montana. It was completed in 1950 and is 76 years old. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 30 ft (taller than 82.7% in MT) |
| Dam Length | 400 ft |
| Dam Type | Earth |
| Max Storage | 342 acre-ft |
| Normal Storage | 198 acre-ft |
| Drainage Area | 7 sq mi |
| Year Completed | 1950 (76 years old) |
| NID ID | MT00033 |
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
WILLIAM R MANGER ESTATE
Private
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Low Hazard 30 ftFrequently Asked Questions
What is the hazard classification of Keep Cool?
Keep Cool 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 Keep Cool?
Keep Cool is owned by WILLIAM R MANGER ESTATE (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Keep Cool built?
Keep Cool was completed in 1950, making it 76 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 Keep Cool?
Keep Cool 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 Keep Cool?
Keep Cool has a dam height of 30 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 Keep Cool last inspected?
Keep Cool was last inspected on October 29, 1993. Inspection dates indicate when a formal review occurred, not the results of that inspection.