Sentinel Detention Dam
Key Takeaway
Sentinel Detention Dam is classified as low hazard in Montana. It was completed in 1969 and is 57 years old. Its primary use is fire protection.
Physical Details
| Dam Length | 491 ft |
| Dam Type | Gravity |
| Max Storage | 257 acre-ft |
| Normal Storage | 186 acre-ft |
| Surface Area | 30 acres |
| Drainage Area | 1 sq mi |
| Year Completed | 1969 (57 years old) |
| Year Modified | 1968 |
| NID ID | MT00718 |
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 30 ftFrequently Asked Questions
What is the hazard classification of Sentinel Detention Dam?
Sentinel 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 Sentinel Detention Dam?
Sentinel Detention Dam is owned by DOI BLM (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Sentinel Detention Dam built?
Sentinel Detention Dam was completed in 1969, making it 57 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 Sentinel Detention Dam?
Sentinel 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 Sentinel Detention Dam last inspected?
Sentinel Detention Dam was last inspected on October 24, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.