Lower Glasston Dam

Sweet Grass County, Montana (near GREYCLIFF)

River/Stream: SWEETGRASS CANAL OFFSTREAM

High Hazard

Failure would likely cause loss of life

Key Facts

Dam Type
Earth
Height
30 ft
Dam Length
1,240 ft
Reservoir Storage
7,317 acre-ft
Year Completed
1912
Primary Purpose
Irrigation
Owner Type
Private
Max Discharge
—

Condition Assessment

PoorLast inspected: 2021-07-10

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

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

Location

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Quick Stats

NID ID
MT00378
State
Montana (MT)
Coordinates
46.00490, -109.84018
Age
114 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.