"Local Concern: Eurasian watermilfoil forms large mats of floating vegetation that will shade-out native aquatic plants and impede recreational activities. This species is not a valuable food source of waterfowl and may interfere with fish predation. Thick vegetation like this can also clog residential or industrial water intakes." - Michigan Invasive Species @ Michigan.gov
"Local Concern: As with many invasive species, curly-leaf pondweed out-competes native aquatic plant species and reduces diversity. Dense colonies can hinder fish movement as well as recreational activity." - Michigan Invasive Species @ Michigan.gov