Long Dam
Key Takeaway
Long Dam is classified as low hazard in Montana. Its primary use is flood risk reduction.
Physical Details
| Dam Length | 4,026 ft |
| Dam Type | Gravity |
| Max Storage | 61 acre-ft |
| Normal Storage | 29 acre-ft |
| Surface Area | 32 acres |
| NID ID | MT00615 |
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 12 ftFrequently Asked Questions
What is the hazard classification of Long Dam?
Long 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 Long Dam?
Long Dam is owned by DOI BLM (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
What is the primary purpose of Long Dam?
Long 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 Long Dam last inspected?
Long Dam was last inspected on September 5, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.