Invasive Aquatic Plants

Washington Department of Ecology
Aquatic Plant Monitoring
Freshwater aquatic plant monitoring is conducted within the Department of Ecology’s Environmental Assessment Program. The monitoring program’s purpose is to track aquatic plant community changes in lakes and rivers throughout the state, concentrating on invasive non-native species such as Eurasian milfoil.

Washington Department of Ecology
Aquatic Plant Identification Manual for Washington's Freshwater Plants

Washington State Noxious Weed Control Board
Mission is to serve as responsible stewards of Washington by protecting and preserving the land and resources from the damaging effects of noxious weeds.