Half Barrel Detention Dam
Key Takeaway
Half Barrel Detention Dam is classified as low hazard in Montana. It was completed in 1956 and is 70 years old. Its primary use is fire protection.
Physical Details
| Dam Length | 1,255 ft |
| Dam Type | Gravity |
| Max Storage | 44 acre-ft |
| Normal Storage | 144 acre-ft |
| Surface Area | 19 acres |
| Drainage Area | 2 sq mi |
| Year Completed | 1956 (70 years old) |
| NID ID | MT00685 |
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 Half Barrel Detention Dam?
Half Barrel 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 Half Barrel Detention Dam?
Half Barrel Detention Dam is owned by DOI BLM (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Half Barrel Detention Dam built?
Half Barrel Detention Dam was completed in 1956, making it 70 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 Half Barrel Detention Dam?
Half Barrel Detention Dam 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.
When was Half Barrel Detention Dam last inspected?
Half Barrel Detention Dam was last inspected on August 5, 2009. Inspection dates indicate when a formal review occurred, not the results of that inspection.