109 168th Ave NE

Sept. 3, 2024: COBU North Sammamish Conveyance Project. The project will reduce erosion in a stormwater drainage channel (the Tributary Channel) by connecting an existing 18-inch stormwater outfall to a 12-inch stormwater pipe laid on top of imported fill in the channel. The channel will also be regraded to reduce potential sedimentation from steep slopes and allow for easier maintenance access. The proposed changes to the stormwater system are considered an expanded use of an existing stormwater facility., 24 105167 DC

March 10, 2025: Completed.

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