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Project overview

Map of the Middle Fork Snoqualmie River Knotweed Control Project

This project started in 2005 on Roaring Creek, a tributary that enters the mainstem of the river around RM 4, and as of 2015, the entire project area has received several years of treatment from the upper infestation to the confluence with the North Fork and South Fork at Three Forks Park. Replanting started in winter of 2010/2011 at Tanner landing and continued for the next three years. 

Project area (download map file)

RM 0 to 4 on the Middle Fork, and RM 0 to 2.5 on Roaring Creek. The project area includes Little Si Natural area, Mt Si Road and Tanner Landing.

The only tributary covered in the project area is Roaring Creek.

News and updates

Funding is secure to continue the maintenance of existing control work for at least the next few years and replanting will be done as needed and as resources permit.

Need more information or want to get your property included? Contact us at noxious.weeds@kingcounty.gov.

Photos - click thumbnail for larger image

Middle Fork Snoqualmie Island before knotweed control, from a distance
Middle Fork Snoqualmie Island after knotweed control, from a distance
Middle Fork Snoqualmie knotweed mapping
Middle Fork Snoqualmie levee before knotweed control
Middle Fork Snoqualmie levee after knotweed control, 2010
Middle Fork Snoqualmie at SE 114th levee, before knotweed control, 2006
Middle Fork Snoqualmie at SE 114th levee, after knotweed control, 2006
Middle Fork Snoqualmie replanting trees, 2011
Middle Fork Snoqualmie replanting willow stakes, 2011

Funding

  • U.S. Environmental Protection Agency