Halfpint Detention Dam
Key Takeaway
Halfpint Detention Dam is classified as low hazard in Montana. It was completed in 1965 and is 61 years old. Its primary use is flood risk reduction.
Physical Details
| Dam Length | 1,005 ft |
| Dam Type | Gravity |
| Max Storage | 275 acre-ft |
| Normal Storage | 0 acre-ft |
| Surface Area | 60 acres |
| Drainage Area | 17 sq mi |
| Year Completed | 1965 (61 years old) |
| NID ID | MT00675 |
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 Hazard 35 ftFrequently Asked Questions
What is the hazard classification of Halfpint Detention Dam?
Halfpint 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 Halfpint Detention Dam?
Halfpint Detention Dam is owned by DOI BLM (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Halfpint Detention Dam built?
Halfpint Detention Dam was completed in 1965, making it 61 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 Halfpint Detention Dam?
Halfpint 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 Halfpint Detention Dam last inspected?
Halfpint Detention Dam was last inspected on December 2, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.