Donley Reservoir (Rosebud)

Rosebud County, Montana (near FORSYTH)

River/Stream: LARSON COULEE

Low Hazard

Failure would cause minimal damage

Key Facts

Dam Type
Earth
Height
38 ft
Dam Length
400 ft
Reservoir Storage
654 acre-ft
Year Completed
1930
Primary Purpose
Fire Protection, Stock, Or Small Fish Pond
Owner Type
Private
Max Discharge
3,500 cfs

Condition Assessment

Not Rated

Hazard Classification: Low — This describes the potential consequences of dam failure, not the likelihood of failure.

Condition Assessment: Not Rated — This describes the current physical condition of the dam based on the most recent inspection.

Location

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Quick Stats

NID ID
MT00066
State
Montana (MT)
Coordinates
46.45730, -106.92990
Age
96 years

Nearby Dams

External Resources

Data sourced from the National Inventory of Dams (NID). Information may not reflect the most current status of this dam. Hazard classification reflects potential consequences of failure, not the likelihood of failure or the current condition.