Eurasian Watermilfoil was found in Beaver Lake north of Whitefish last week. The Montana Department of Agriculture and Flathead County requested a closure of the boat ramp at the Fishing Access Site, where a patch of the milfoil was found. The closure is necessary to prevent the potential spread of the invasive weed around Beaver Lake and to other lakes in the area.
The plants, covering about a 12 by 12 foot area in the lake, were found by DNRC during a field trip last Wednesday. The identification of the plants has since been confirmed by FWP and Department of Agriculture.
Because this is a noxious weed the management authority lies with Flathead County and Montana Department of Agriculture. FWP operates the Fishing Access Site on Beaver Lake. The agencies will look into potential treatment options.
Eurasian Watermilfoil was introduced from Eurasia, and has since spread throughout much of North America. The plant creates nuisance growths and suppresses native aquatic plants.