Klahanie Stormwater Detention Dam No 1

King County, Washington (near Issaquah)

River/Stream: Tr-Laughing Jacobs Lake Outlet

Significant Hazard

Failure could cause economic loss or disruption

Key Facts

Dam Type
Earth
Height
9 ft
Dam Length
400 ft
Reservoir Storage
16 acre-ft
Year Completed
1984
Primary Purpose
Flood Risk Reduction
Owner Type
Local Government
Max Discharge
50 cfs

Condition Assessment

FairLast inspected: 2020-08-26

Hazard Classification: Significant — 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
WA01484
State
Washington (WA)
Coordinates
47.56718, -122.02463
Age
42 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.