Mackay

Custer County, Idaho (near MACKAY)

River/Stream: BIG LOST RIVER SINKS

High Hazard

Failure would likely cause loss of life

Key Facts

Dam Type
—
Height
75 ft
Dam Length
1,430 ft
Reservoir Storage
45,000 acre-ft
Year Completed
1918
Primary Purpose
Other
Owner Type
Private
Max Discharge
7,000 cfs

Condition Assessment

FairLast inspected: 2019-10-04

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

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

Location

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Quick Stats

NID ID
ID00181
State
Idaho (ID)
Coordinates
43.95270, -113.67320
Age
108 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.