Juvenile salmon return to lower Sammamish River's new off-channel habitat
In 2018, the landscaping crew completed restoring the project site with native plants. The City reminds trail users that the site is a habitat restoration project, not a recreation area. As such, users should remain on the trail and not disturb the area.
This project reconnected and restored 1,100 feet of an old remnant channel and floodplain of the Sammamish River.
Project goals included restoring floodplain and channel connectivity and function through:
Restoring about 8 acres of floodplain plant community diversity and structure with native plantings and removal of invasive plant species;
Establishing open water reconnection to the new channel at both ends to the Sammamish River. The new off-channel habitat is now accessible for salmonids. This is expected to benefit juvenile Chinook and Coho salmon as well as other species of fish, amphibians and wildlife.
The project site is owned primarily by City of Bothell and King County and is zoned as Public Park Open Space on land located to the west of 102nd Ave NE.
A portion of the Sammamish River public trail runs through the site and was affected by culvert installations during a portion of summer 2016 due to fish window restrictions. A section of the parking lot adjacent to 102nd Ave NE was fenced off for construction traffic from mid June to September 2016. After culvert installation was completed, trail usage was briefly interrupted for trucks entering and exiting the site during August and September. There have been no ongoing impacts to public usage of the parking lot or trail since that time.
The City obtained design and construction funding via King County Cooperative Watershed Management Fund, King Conservation District, and the Washington State Recreation and Conservation Office's Salmon Recovery Funding Board.