Anderson Pond, North Stonington - 2004


2004 Aquatic Plant Survey Map of Anderson Pond

Transect Data | Water Data

  In our 2004 survey of Anderson Pond, it was found that the pond has a very diverse population of aquatic plants. 18 species were recorded, two of which are invasive: variable-leaf watermilfoil hybrid (Myriophyllum heterophyllum x laxum) and fanwort (Cabomba caroliniana).  The pond is 56.6 acres with a uniformly shallow bottom.  The maximum depth is 7.5 feet, and the mean depth is 5.4 feet.  Most of the pond residents live on the eastern side leaving the western side mostly wooded.  The pond has a public boat launch and no boating restrictions. It does not have public swimming access. 

  Variable-leaf watermilfoil hybridwas the dominant species occurring throughout the lake.  Floating-leaved species, white water lily (Nymphaea odorata), yellow water lily (Nuphar variegata) and watershield (Brasenia schreberi), dominated the shoreline and extended into the water 7 feet on the northeast and southwest sides of the pond. Purple bladderwort (Utricularia purpurea) also was abundant in shallow water on the west side of the pond.

  A number of aquatic plants occurred in scattered patches or isolated populations around the pond. Large patches of needle spikerush (Eleocharis acicularis) were found throughout the lake, especially in the shallow water of the western side. Ribbon-leaf pondweed (Potamogeton epihydrus ) was recorded in several patches in shallow water at the pond’s southwestern end, and snailseed pondweed (Potamogeton bicupulatus) was found in small patches at the northern end of the east and west sides. Little floating heart (Nymphoides cordata) was also found in many small patches around the lake.

  The non-native species fanwort was found in several widely scattered locations, near the dam on the pond’s eastern end, in a cove at the northern end of the western side, and at the southwest end of the lake, among others. Floating-leaf pondweed (Potamogeton natans) was found near the dam and in a cove at the pond’s west end, where spineless hornwort (Ceratophyllum echinatum) also occurred. Spotted pondweed (Potamogeton pulcher) was found in only one location at the southwestern end of the pond.

Species recorded in our 2004 survey of Anderson Pond.
Scientific Names
*Invasive species


Purple bladderwort
Spotted pondweed

Floating-leaf pondweed

Ribbon-leaf pondweed
Variable-leaf watermilfoil hybrid*

Hiddenfruit bladderwort

Slender naiad

Humped bladderwort

Small pondweed
Western waterweed

Little floating heart

 Snailseed pondweed White water lily

Needle spikerush

Spineless hornwort
Yellow water lily

 Other Anderson Pond Surveys2012 Survey