Lower Granite Lock and Dam - North Levee

Nez Perce County, Washington (near LEWISTON/CLARKSTON)

River/Stream: Snake

High Hazard

Failure would likely cause loss of life

Key Facts

Dam Type
Earth
Height
16 ft
Dam Length
12,725 ft
Reservoir Storage
Year Completed
1974
Primary Purpose
Navigation
Owner Type
Federal
Max Discharge

Condition Assessment

Not AvailableLast inspected: 2022-06-07

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
WA00349
State
Washington (WA)
Coordinates
46.42085, -116.99754
Age
52 years

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.