Upper Silvis

Ketchikan Gateway Borough County, Alaska (near None)

River/Stream: Beaver Falls Creek, George Inl

Low Hazard

Failure would cause minimal damage

Key Facts

Dam Type
Rockfill
Height
60 ft
Dam Length
135 ft
Reservoir Storage
38,000 acre-ft
Year Completed
1968
Primary Purpose
Hydroelectric
Owner Type
Public Utility
Max Discharge
6,000 cfs

Condition Assessment

SatisfactoryLast inspected: 2019-08-07

Hazard Classification: Low — 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
AK00007
State
Alaska (AK)
Coordinates
55.37996, -131.51893
Age
58 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.