Snoqualmie, WA – In spring 2015, post-flood inspections revealed damage to an existing Snoqualmie River revetment at the intersection of SE River Street and Park Avenue SE in downtown Snoqualmie. A revetment is an engineered riverbank protection structure constructed to prevent erosion and damage from flooding and high flow velocities. High river flows caused erosion of riverbank armor rocks and exposure of underlying soils.
The City of Snoqualmie, with funding from the King County Flood Control District, will repair the existing river revetment. The repair will protect properties and structures along the roadway and stabilize a city water main and buried utility infrastructure. Without the repair, continued river erosion will likely cause the road to fail entirely.
The project includes installation of wood piling, armor rock, and native vegetation to provide erosion protection, along with removal of invasive plant species growing on this section of the existing revetment. Construction will begin in mid-July with completion in December 2021.
For questions, contact the Snoqualmie Parks and Public Works Department at (425) 831-4919.
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City of Snoqualmie