Sob Detention Dam
Key Takeaway
Sob Detention Dam is classified as low hazard in Montana. It was completed in 1966 and is 60 years old. Its primary use is flood risk reduction.
Physical Details
| Dam Length | 600 ft |
| Dam Type | Gravity |
| Max Storage | 190 acre-ft |
| Normal Storage | 165 acre-ft |
| Surface Area | 25 acres |
| Drainage Area | 1 sq mi |
| Year Completed | 1966 (60 years old) |
| Year Modified | 1966 |
| NID ID | MT00750 |
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 Sob Detention Dam?
Sob 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 Sob Detention Dam?
Sob Detention Dam is owned by DOI BLM (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Sob Detention Dam built?
Sob Detention Dam was completed in 1966, making it 60 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 Sob Detention Dam?
Sob 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 Sob Detention Dam last inspected?
Sob Detention Dam was last inspected on November 4, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.