European Frog-bit
European Frog‐bit, a free‐floating aquatic plant with small white flowers, was intentionally introduced in 1932. This plant species produces a dense floating mat of vegetation, preventing submerged aquatic plants from accessing light, dissolved gases, or nutrients.


Common in-stream vegetation

  • Algae
  • Macrophytes (larger aquatic plants)
  • Hornwort
  • Tape grasses
  • European Frog-bit (invasive)
  • European Water‐Milfoil (invasive)
  • Rush
  • Horsetail

Some examples of riparian (on the bank) vegetation

  • Speckled Alder
  • Silky Dogwood
  • Sweet Gale
  • Little Bluestem
  • Numerous fern species

Common canopy vegetation

  • Maple
  • White and Red Pine
  • Eastern White Cedar
  • Tamarack
  • White, Black Spruce
  • Red Oak
  • Basswood
  • Ash
  • Poplar
  • Yellow and White Birch
  • Jack Pine
  • Balsam Fir and Balsam Poplar
  • Butternut (endangered)
  • Lichens and mosses