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Powers Lake, East Lyme
Powers Lake Species Map
(1.5 MB, .pdf format*)

   Powers Lake is a 144 acre body of water popular among fishermen in East Lyme .  The deepest point in the lake is only 14 meters (45 feet) and the shoreline drops off quickly. This limits the littoral zone to the edges of the lake and three shallow coves. The shoreline is undeveloped except for a Yale University School of Engineering laboratory on the southeastern shore. Yale University owns most of the land surrounding the lake.

   Our June 2007 survey found twenty-one species of aquatic plants. Of these, only Myriophyllum heterophyllum and Cabomba caroliniana were invasive. They occurred in small randomly spaced patches along the perimeter of the lake usually with a mixture of native species. Invasive M. heterophyllum forms a dense patch across the entire width of the northeast cove.   

   Other prevalent plants were the bladderworts: Utricularia purpurea, Utricularia radiate, Utricularia gibba, and Utricularia vulgaris. Together, they formed almost continuous coverage around the perimeter of the lake and often extended further into deeper water.  Najas flexilis was found frequently on transects in deeper water indicating that this species is more prevalent than the map created from the visual survey would indicate. Nymphaea odorata, Nuphar variegata and Brasenia schreberi were prevalent in patches along the shoreline except for the long southeastern rocky stretch. 

 

Find Common Plant Names

(65 KB, .pdf format*)

Species recorded in our 2007 survey of Powers Lake. Click on plant to view herbarium mount. (Invasive species in bold)
Decodon verticillatus
Eleocharis sp.
Myriophyllum heterophyllum
Potamogeton bicupulatus
Potamogeton foliosus
Sagittaria sp.
Unidentified sedge
Utricularia vulgaris

 


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