Big Timber #47
Key Takeaway
Big Timber #47 is classified as significant hazard in Montana. It was completed in 1955 and is 71 years old. Its primary use is fire protection. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 18 ft (taller than 36.9% in MT) |
| Dam Length | 375 ft |
| Dam Type | Earth |
| Max Storage | 214 acre-ft |
| Normal Storage | 124 acre-ft |
| Year Completed | 1955 (71 years old) |
| NID ID | MT01961 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
WILLIAM MAGELSSEN, ESTATE OF
Private
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Low Hazard 22 ftFrequently Asked Questions
What is the hazard classification of Big Timber #47?
Big Timber #47 is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Big Timber #47?
Big Timber #47 is owned by WILLIAM MAGELSSEN, ESTATE OF (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Big Timber #47 built?
Big Timber #47 was completed in 1955, making it 71 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 Big Timber #47?
Big Timber #47 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.
How tall is Big Timber #47?
Big Timber #47 has a dam height of 18 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.