Tomahawk Detention Dam
Key Takeaway
Tomahawk Detention Dam is classified as low hazard in Montana. It was completed in 1962 and is 64 years old. Its primary use is flood risk reduction.
Physical Details
| Dam Length | 1,738 ft |
| Dam Type | Gravity |
| Max Storage | 556 acre-ft |
| Normal Storage | 425 acre-ft |
| Surface Area | 96 acres |
| Drainage Area | 1 sq mi |
| Year Completed | 1962 (64 years old) |
| Year Modified | 1962 |
| NID ID | MT00712 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
DOI BLM
Federal Government
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Low HazardFrequently Asked Questions
What is the hazard classification of Tomahawk Detention Dam?
Tomahawk Detention Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Tomahawk Detention Dam?
Tomahawk Detention Dam is owned by DOI BLM (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Tomahawk Detention Dam built?
Tomahawk Detention Dam was completed in 1962, making it 64 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 Tomahawk Detention Dam?
Tomahawk Detention Dam serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Tomahawk Detention Dam last inspected?
Tomahawk Detention Dam was last inspected on December 2, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.