Donley Reservoir (Rosebud)
Key Takeaway
Donley Reservoir (Rosebud) is classified as low hazard in Montana. It was completed in 1930 and is 96 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 38 ft (taller than 94.3% in MT) |
| Dam Length | 400 ft |
| Dam Type | Earth |
| Max Storage | 654 acre-ft |
| Normal Storage | 391 acre-ft |
| Drainage Area | 4 sq mi |
| Max Discharge | 3,500 cfs |
| Year Completed | 1930 (96 years old) |
| NID ID | MT00066 |
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
JOE DONLEY
Private
Nearby Dams
T L Johnson #1
Rosebud, MT
Low Hazard 22 ftT L Johnson #5
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Low Hazard 15 ftErickson #3
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Low Hazard 14 ftHarstad #1
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Low Hazard 26 ftVananda
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Low Hazard 42 ftJohnson #1
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Low Hazard 20 ftZempel #3
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Low Hazard 20 ftErickson #4
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Low Hazard 18 ftFrequently Asked Questions
What is the hazard classification of Donley Reservoir (Rosebud)?
Donley Reservoir (Rosebud) 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 Donley Reservoir (Rosebud)?
Donley Reservoir (Rosebud) is owned by JOE DONLEY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Donley Reservoir (Rosebud) built?
Donley Reservoir (Rosebud) was completed in 1930, making it 96 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 Donley Reservoir (Rosebud)?
Donley Reservoir (Rosebud) 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 Donley Reservoir (Rosebud)?
Donley Reservoir (Rosebud) has a dam height of 38 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.