Colstrip Evaporation Pond Dam

Rosebud County, Montana (near COLSTRIP)

River/Stream: TR-EAST FORK ARMELLS CREEK

High Hazard

Failure would likely cause loss of life

Key Facts

Dam Type
Earth
Height
88 ft
Dam Length
1,840 ft
Reservoir Storage
3,834 acre-ft
Year Completed
1976
Primary Purpose
Other
Owner Type
Public Utility
Max Discharge
625 cfs

Condition Assessment

SatisfactoryLast inspected: 2014-07-14

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

Condition Assessment: Satisfactory — This describes the current physical condition of the dam based on the most recent inspection.

Location

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Quick Stats

NID ID
MT03211
State
Montana (MT)
Coordinates
45.90760, -106.64710
Age
50 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.