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Eurasian Watermilfoil

EWM is found in Cobbossee Lake, Pleasant Hill Pond, and Grondin Pond. Pleasant Hill and Grondin are very small waterbodies with limited access. Cobbossee is a very popular lake for recreational near Augusta, and is also home to two other invasive plants; European Frog’s Bit and Variable Milfoil.

Per Maine DEP:

Eurasian water milfoil, a native plant of Europe and Asia, is a serious threat to lakes and ponds throughout the United States. This species of water milfoil was first discovered in a small pond in Maine in 2003. It is also found in nearby Massachusetts, Vermont, New Hampshire, Connecticut, and the Canadian Provinces. Once introduced into a lake, Eurasian water milfoil is virtually impossible to eradicate. It grows rapidly and aggressively, reproducing primarily through fragmentation. The introduction of one single fragment of this plant can result in the infestation of an entire lake. The impacts of an infestation have the potential to be devastating. Dense mats of Eurasian water-milfoil impair boating, fishing, and swimming. Reduced lake water quality is another concern along with the potential decline of shorefront property values.

Photo: Maine DEP. Drawing: University of Florida/IFAS Center for Aquatic and Invasive Plants.
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