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District manager previews summer flood projects: Scott Revetment removal, Tukwila and Kent repairs, Snoqualmie study outreach
Summary
District staff outlined planned summer construction and technical work across King County, including removing 570 feet of rock at the Scott Revetment on the North Fork Snoqualmie, repairs on Issaquah Creek that protect about 30 homes, and public outreach on the Lower Snoqualmie channel migration zone study beginning in June.
At the May 7 meeting the district received a manager's report on planned summer work across King County, covering projects in the Snoqualmie, Lower Green, Cedar and Issaquah basins as well as a county-led technical study on channel migration.
The report said crews plan to remove about 570 feet of rock at the Scott Revetment on the left bank of the North Fork Snoqualmie in late August and wrap work in September; staff said the revetment does not protect county facilities or private property and that removal will restore habitat and reduce future maintenance. A separate repair on the Snoqualmie (identified in the packet as the "Snow Stossil Major Repair") is expected to proceed in July to address erosion near the city of Carnation and protect county road, utilities and agricultural and private property.
On the Lower Green the district described two projects in coordination with the U.S. Army Corps of Engineers: a berm to protect South 250 Ninth Street in Kent as part of the Horseshoe Bend McCoy realignment, and a second-phase repair of roughly 600 feet of the Tukwila 205 levee being led by the Corps' Walla Walla District.
On the Cedar, the Belmondo revetment repair (a 2020 flood repair) is in procurement and would protect the trail, fiber-optic lines and State Route 169 if it moves forward. On Issaquah Creek, the Moam Revetment Repair protects about 30 homes and is scheduled for construction in August.
Staff also reported the Lower Snoqualmie channel migration zone study is entering a public outreach phase in June with a 45-day comment period; completed maps will be used for permitting review by DLS. Committee members asked about Army Corps responsiveness; staff said projects far along in the pipeline appear likely to proceed but that the county is monitoring potential federal budget and regulatory changes that could affect future partnerships.
The chair and members urged continued monitoring and follow-up with the Army Corps and county staff to ensure projects proceed on schedule.
