Sammamish River / Union Bay / Vashon Island / Vashon Island beaches / Duwamish River / /
Organization
King County Department of Natural Resources and Parks Water / Washington State Department / Department of Natural Resources and Parks Water / Washington State Noxious Weed Board / state weed board / Washington Department of Fish and Wildlife / /
Water Weeds: Guide to Aquatic Weeds in King County Department of Natural Resources and Parks Water and Land Resources Division Noxious Weed Control Program