Libby Dam

Lincoln County, Montana (near LIBBY)

River/Stream: KOOTENAI RIVER

High Hazard

Failure would likely cause loss of life

Key Facts

Dam Type
Gravity
Height
422 ft
Dam Length
2,890 ft
Reservoir Storage
6,027,000 acre-ft
Year Completed
1973
Primary Purpose
Hydroelectric
Owner Type
Federal
Max Discharge
150,000 cfs

Condition Assessment

Not AvailableLast inspected: 2025-07-16

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

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

Location

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Quick Stats

NID ID
MT00652
State
Montana (MT)
Coordinates
48.41029, -115.31427
Age
53 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.