Lake Quonnipaug, Guilford - 2004
Residents of the 99-acre
The most abundant species at the lake’s northern end were curlyleaf pondweed (Potamogeton crispus), white water lily (Nymphaea odorata), and yellow water lily (Nuphar variegata). Individual plants to small patches of Eurasian watermilfoil (Myriophyllum spicatum), large-leaf pondweed (Potamogeton amplifolius), Robbins' pondweed, and western waterweed (Elodea nuttallii) also were found in the area.
The western side of the main body of the lake was dominated by Robbins' pondweed. Individual plants or small patches of watershield (Brasenia schreberi), white water lily, yellow water lily, Eurasian watermilfoil, and large-leaf pondweed were found. Several small, shallow coves on the east side of the lake supported more abundant populations of several aquatic plants. Growing with the dominant Robbins' pondweed were white water lily, yellow water lily, Eurasian watermilfoil, large-leaf pondweed, curlyleaf pondweed, watershield, and western waterweed.
Two large areas in the middle of the lake were too deep to support aquatic plants. The lake has a maximum depth of 45 feet and a mean depth of 18 feet. In a large, shallow, mid-lake area, large-leaf pondweed grew abundantly with Eurasian watermilfoil and some curlyleaf pondweed.
Many species were recorded in the narrow southern cove off the main body of the lake. White water lily and yellow water lily were the most abundant floating-leaved species, and Eurasian watermilfoil and coontail (Ceratophyllum demersum) were the most abundant submersed species. The channel also contained individual plants or patches of a large number of other species.