DESCRIPTION
Jefferson County Public Health (Jefferson County) intends to complete the next design phase of the Powerlines Reach restoration through the development of draft final design plans, and then - due to the anticipated costs involved - will implement project construction in a future phase. The project is located on the Lower Dosewallips River, and spans from River Mile (RM) 1.3 to RM2.5. The project design focus on generating increase floodplain and side channel engagement, instream wood stability and cover to directly improve conditions for Hood Canal Summer Chum and Mid Hood Canal Chinook.
Jefferson County Public Health (Jefferson County) will work with an engineering design consultant to complete a final design for restoration of a portion of the Powerlines Reach, located on the Lower Dosewallips River from River Mile (RM) 1.3 to RM 1.8. In cooperation with reach landowners, the goal of this project is to restore floodplain functions and to increase the quantity, complexity and diversity of spawning and juvenile rearing habitat for Hood Canal Summer Chum and Mid Hood Canal Chinook salmon. The project footprint will encompass 29.1 acres and 0.6 miles of river and side channel shoreline. It will utilize in-channel engineered log jam (ELJ) installations, key log placement, riparian community enhancement to increase floodplain and side channel engagement, instream wood stability, spawning gravel sorting and retention, and pool habitat. The final design effort will prepare all permit applications to include the CLOMR/LOMR process. The currently funded preliminary design phase has completed a characterization of the geomorphic, habitat, and hydraulic conditions of the reach, and conceptual designs. New LiDAR was acquired in January 2024 to support preliminary design development (see attached design). With the cooperation of private landowners, preliminary design deliverables are now complete, and access to the floodplain now will be ground based. Meetings of the Dosewallips River Collaborative will continue to engage the public on this project.