Tukwila Levee Repair to Enhance Flood Protection and Salmon Habitats Along Green River

In Tukwila, King County, a significant levee repair project is underway along the Green River’s right bank, stretching from River Mile 14.6 to 15.2, adjacent to manufacturing and warehouse buildings with a popular trail running atop. The Desimone Levee Major Repair USACE project aims to fix the damage inflicted during the February 2020 floods, as reported by

King County

.

Tasked with providing flood risk reduction to well-developed areas in Renton, Tukwila, and Kent, the levee’s damage poses a genuine safety risk, necessitating urgent repair. According to the

project details

, the U.S. Army Corps of Engineers will reinforce the area, which lacks mature trees and large wood to slow down fast-moving water that’s crucial for young salmon on their out-migration.

The project, conducted under the P.L. 84-99 Levee Rehabilitation and Inspection Program, will see levee slope failures repaired, alignment shifted landward for better embankment stability, and installation of a floodwall to address seepage. Notably, it incorporates habitat improvements such as log sets and boulder features providing refuge for salmonids.

Reflecting the confined nature of the Lower Green River, sandwiched mercilessly by development, the plan includes extensive revegetation with native riparian plants, striving to introduce elements of a bygone natural complexity. While the trail garners low to moderate recreational use for floating, boating, and fishing, the levee’s facelift will integrate much-needed environmental considerations,

King County

noted.

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