January Detention Dam
Key Takeaway
January Detention Dam is classified as low hazard in Montana. It was completed in 1960 and is 66 years old. Its primary use is fire protection.
Physical Details
| Dam Length | 946 ft |
| Dam Type | Gravity |
| Max Storage | 388 acre-ft |
| Normal Storage | 520 acre-ft |
| Surface Area | 39 acres |
| Drainage Area | 6 sq mi |
| Year Completed | 1960 (66 years old) |
| NID ID | MT00672 |
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 January Detention Dam?
January 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 January Detention Dam?
January Detention Dam is owned by DOI BLM (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was January Detention Dam built?
January Detention Dam was completed in 1960, making it 66 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 January Detention Dam?
January 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 January Detention Dam last inspected?
January Detention Dam was last inspected on November 2, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.