Moosup Pond, Plainfield - 2008
Moosup Pond Species Map
Transect Data | Water Data

This 96-acre pond is a natural brook-fed pond that has been raised slightly by a dam in the eastern corner. The shoreline has some residential development blended with agricultural land and undeveloped forest. There is a town beach on the southern shore. The water is exceptionally clear and nurtures a diverse population of aquatic plants.

Our July 2008 survey found twenty-nine species of aquatic plants. Only variable-leaf watermilfoil hybrid (Myriophyllum heterophyllum x laxum) is invasive. This was the most prevalent plant and was found in small patches amongst the other plants along the majority of the shoreline. It was also very abundant in the shallow northern cove where it appeared to limit the number of native species present. Large patches of white water lily (Nymphaea odorata) and watershield (Brasenia schreberi) were common along the shore. Other plants found include sevenangle pipewort (Eriocaulon aquaticum), slender naiad (Najas flexilis), western waterweed (Elodea nuttallii), eelgrass (Vallisneria americana), and variable pondweed (Potamogeton gramineus). The other non-native species found was mudmat (Glossostigma cleistanthum); however, CT DEEP does not list it as invasive and it rarely is a nuisance. It occurred in very small patches east of the boat launch.

Species recorded in our 2008 survey of Moosup Pond.
Scientific Names
*Invasive Species
Common bladderwort Humped bladderwort Robbins' pondweed Snailseed pondweed Watershield
Coontail Mudmat Sedge Spineless hornwort Western waterweed
Eelgrass Needle spikerush Sevenangle pipewort Spotted pondweed White water lily
Flat-Leaf bladderwort Pickerelweed Slender naiad Variable pondweed Yellow water lily
Floating bladderwort Purple bladderwort Slender watermilfoil Variable-Leaf watermilfoil hybrid* Zigzag bladderwort
Golden hedge-hyssop Ribbon-Leaf pondweed Small waterwort Water starwort

Other Moosup Pond Surveys: 2012