Three Trees Detention Dam
Key Takeaway
Three Trees Detention Dam is classified as low hazard in Montana. It was completed in 1954 and is 72 years old. Its primary use is flood risk reduction.
Physical Details
| Dam Length | 1,224 ft |
| Dam Type | Gravity |
| Max Storage | 149 acre-ft |
| Normal Storage | 0 acre-ft |
| Surface Area | 33 acres |
| Drainage Area | 9 sq mi |
| Year Completed | 1954 (72 years old) |
| NID ID | MT03899 |
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 Three Trees Detention Dam?
Three Trees 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 Three Trees Detention Dam?
Three Trees Detention Dam is owned by DOI BLM (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Three Trees Detention Dam built?
Three Trees Detention Dam was completed in 1954, making it 72 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 Three Trees Detention Dam?
Three Trees 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 Three Trees Detention Dam last inspected?
Three Trees Detention Dam was last inspected on October 24, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.