Japanese knotweed. Reported a patch on the oregon City side of the Clackamas River at the Oregon city Gladstone bridge on one side now I'm reporting a patch on the Oregon Sunnyside and Clackamette Park very close to the boat ramp. Between the boat ramp and Willamette river right at the waterline.
Expert Reviewer
Samuel Leininger Clackamas Soil and Water Conservation District 4-County Cooperative Weed Management Area Columbia Gorge Cooperative Weed Management Area