Aquatic Weed Control at Shadow Lake

Shadow Lake is dealing with invasive pressure as well! Neighbors living around the lake, the King county Noxious Weed Control Program and the Washington State Department of Ecology’s Aquatic Weeds Management Fund have teamed up to fight back.


Eurasian watermilfoil and fragrant water lily currently grow into dense monotypic stands that can outcompete native aquatic plants, reduce biodiversity and change the natural predator/prey relationship in the lake.  These plants are also a recreation hazard for those swimming and boating. Yellowflag iris is a threat to the shoreline, wetland, and bog habitats surrounding the lake.

Read more about the control strategy

Attend an information meeting

How you can help 

    1. Attend SHADOW’s Restoration Work Party from 10 am – 2 pm on Saturday, June 2nd! We will be down at the lake shore hand-pulling Yellowflag iris in support of these efforts.
    2. Attend King County’s Weed Watcher Training from 6:30 – 8:30 pm on Monday, June 25th at the Lodge at Beaver Lake and become a weed watcher on Shadow Lake.