Big Timber #21
Key Takeaway
Big Timber #21 is classified as low hazard in Montana. It was completed in 1944 and is 82 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 18 ft (taller than 36.9% in MT) |
| Dam Length | 1,000 ft |
| Dam Type | Earth |
| Max Storage | 60 acre-ft |
| Normal Storage | 35 acre-ft |
| Drainage Area | 2 sq mi |
| Max Discharge | 1,100 cfs |
| Year Completed | 1944 (82 years old) |
| NID ID | MT02308 |
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
BIG TIMBER LIVESTOCK CO
Private
Nearby Dams
Montana #17
Rosebud, MT
Low Hazard 18 ftBig Timber #37
Rosebud, MT
Low Hazard 10 ftSun Coulee
Rosebud, MT
Low Hazard 27 ftBig Timber #24
Rosebud, MT
Low Hazard 25 ftBig Timber #16
Rosebud, MT
Low Hazard 18 ftBig Timber #14
Rosebud, MT
Low Hazard 12 ftBig Timber #20
Rosebud, MT
Low Hazard 20 ftBig Timber #10
Rosebud, MT
Low Hazard 26 ftFrequently Asked Questions
What is the hazard classification of Big Timber #21?
Big Timber #21 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 Big Timber #21?
Big Timber #21 is owned by BIG TIMBER LIVESTOCK CO (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Big Timber #21 built?
Big Timber #21 was completed in 1944, making it 82 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 #21?
Big Timber #21 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 #21?
Big Timber #21 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.