A great story via The Capitol Hill Times about the rebirth of Thornton Creek: After Eight Years, Chinook Salmon Return to Seattle Public Utilities Restoration Site to Spawn.
Seattle Public Utilities created the Thornton Creek Confluence project to restore the habitat of the endangered Puget Sound Chinook salmon and it’s doing just that. SPU has observed “the Chinook salmon pair travelled almost one and a half miles to select this site for spawning. That’s a vote of confidence!” WALSH completed our work at Thornton Creek in 2008 and the adjacent Thornton Place in 2009. Within the six-acre site developed for Thornton Place, the Thornton Water Quality Channel project daylighted the long-buried channel and added a park area around the restored stream. To create the channel, scope involved excavation of 75,000 cubic yards of old fill on the 2.7-acre site. Both sides of the channel are lined with mechanically stabilized earth walls. Surface swales landscaped with special soils and native plants diverted stormwater from a drainage pipe beneath the site. By slowing down the water and allowing it to soak into the soil, the swales helped remove pollution before the water reaches the creek.
We’re excited to see the great results for this unique development and grateful for the opportunity to serve the community along with team members Active Engineering, Merlino Construction, Cerna Landscape; and our WALSH team including John Gilson, John Leduc and Joe Grim – thank you for your dedication on this project that preserves the resources of our Northwest community!
Contact SPU to learn more about the Thornton Creek Confluence project: (206) 233-7029.
Thanks to Eugene Shibayama for capturing an iconic panorama of the Thornton Place and Thornton Creek development and Les Baker for the wonderful overhead and creek views!