Tongue River Dam

Big Horn County, Montana (near ASHLAND)

River/Stream: TONGUE RIVER

High Hazard

Failure would likely cause loss of life

Key Facts

Dam Type
Earth
Height
93 ft
Dam Length
1,824 ft
Reservoir Storage
127,655 acre-ft
Year Completed
1939
Primary Purpose
Irrigation
Owner Type
State
Max Discharge
98,000 cfs

Condition Assessment

SatisfactoryLast inspected: 2024-12-03

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
MT00002
State
Montana (MT)
Coordinates
45.13250, -106.76963
Age
87 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.