Restoration Strategy Overview:
Add Large Woody Debris
Culvert Removal + New Bridge
Install Native Plants
Seabeck Creek is one of four Hood Canal Intensively Monitored Watersheds (IMW). The Washington Department of Fish and Wildlife IMW program is designed as a Before-After Control-Impact (BACI) study in order to determine whether and how habitat restoration activities influence abundance of salmon and steelhead.
Currently, Seabeck Creek is suffering from a legacy of industrial-scale logging and rural development, resulting in restricted fish passage and impaired hydrological processes. The creek lacks instream wood, channel roughness, and off-channel habitats. Fish cannot progress upstream to their critical spawning and rearing habitats due to a failed fish ladder and an undersized culvert, located where the creek crosses Seabeck Holly Rd. NW. Seabeck Creek is home to Salmon such as Coho, Fall Chum, and ESA listed Puget Sound Steelhead.
HCSEG’s Seabeck Creek restoration efforts have been in the works for the past 15 years, and ultimately seek to improve salmon habitat by enhancing stream connectivity and complexity. In partnership with Kitsap County, we will be replacing the 72-in undersized culvert with a 60 foot bridge. This project will improve fish passage and allow flood waters to pass unobstructed. HCSEG will also add large woody debris (LWD) to the creek. LWD improves habitat complexity through creating more sinuous, multi-thread channels within the waterway, as well as provides roughness to retain sediment. An aggressive re-vegetation effort will also take place on stream banks within the project site, with over 3,200 native plants scheduled to be planted. Native plants help create cooler water for fish, provide bank stabilization, and encourage a healthy and diverse ecosystem of local birds, bugs, and other mammals.
Important Update for Local Residents
Road Detour Route
It is anticipated that Seabeck Holly Road NW will be closed to through traffic between Foley Lane and Larson Lane for the duration of the bridge construction. Through traffic will be redirected to use NW Holly Road as an alternative route. This map shows locations of advance detour signage informing motorists of the Seabeck Holly Road closure.
Based on project traffic volumes, Seabeck Holly Road NW will continue to operate at acceptable LOS as a 2-lane roadway under 2040 projected traffic volumes.
Road closure and traffic control shall be coordinated with the local fire department and school district.