Bird Island Shoreline Enhancement
Just off shore in Renton's Gene Coulon Memorial Beach Park, the heavily-visited Bird Island provides habitat to a number of wildlife species, including juvenile Chinook salmon who enter Lake Washington from the Cedar River. The Washington State Department of Natural Resources' Aquatics Restoration team has partnered with the City of Renton Community Services Department to enhance the shoreline habitat of Bird Island while also improving public access to it.
This project will be constructed in two phases.
Phase One: Boardwalk
Phase 1 was constructed between March 1, 2017 and April 12, 2017. Work for phase 1 included:
- Expanding the boardwalk an additional 200 feet and creating a loop
- Removing invasive plants
- Protecting existing trees
- Planting new native trees and shrubs
Working on base of boardwalk Placing new wood for boardwalk
Looking west before new boardwalk Looking west after completion of boardwalk
Phase 2: Shoreline Enhancement
Phase 2 will occur between November 2017 and December 2017. Work for phase 2 includes:
- Remove shoreline debris (concrete and metal)
- Place sand to create shallow water habitat for juvenile salmon
- Place 2 engineered log jams
- Plant native shoreline vegetation
- Three educational signs will be placed along the new boardwalk in early 2018
Ecological Benefits of Project
Adult salmon lay their eggs in the upper reaches of the Cedar River. Once the eggs hatch the juvenile salmon swim down the river and enter Lake Washington. The southern shores of the lake are an area where the baby salmon rest, eat, and grow before moving out of the Ballard Locks and into Puget Sound.
Juvenile Chinook salmon prefer shallow sandy shorelines with overhanging vegetation. Bird Island provides a unique opportunity to improve habitat for these migrating salmon due to its proximity to the mouth of the Cedar River. This project will connect existing habitat between the Gene Coulon swim beach and the recently completed South Lake Washington Shoreline Restoration Project adjacent to the Boeing property.
The end result of this project will be improved habitat for salmon, birds and other wildlife that use the island and a new area for the public to view all of the wildlife.
Please note: During construction, the island will be closed to the public.