Rogers Lake, Lyme and Old Lyme
Rogers Lake Species Map

2006 Aquatic Plant Survey Map of Rogers Lake

(1.5 MB, pdf Format*)

Transect Data (30 KB, .pdf format*) | Water Data

   Rogers Lake is a 260 acre lake straddling the Lyme/Old Lyme line, with a state-owned boat launch.  The launch is at the end of a long, stream-fed cove, which opens to an area in the middle of the lake that is less than 6 feet deep.  On either side of this shallow area to the North and South are deeper basin areas, dotted with islands.  The average depth of the lake is 19 feet, with a maximum of 63 feet in the northern section.  The shoreline is almost all developed by private residences, with one town park on the south shore.

   Our July 2006 survey found 31 aquatic species including one invasive species; Myriophyllum heterophyllum.  It was found mainly in the shallow boat launch and middle area, and also fairly extensively along the entire shoreline.  Potamogeton crispus, an invasive species that had been previously reported, was absent possibly because it is most prolific in the spring.

   

   The narrow cove by the boat launch is filled with small patches of every species listed in the table below, with sizeable patches of Myriophyllum heterophyllum.  Moving out into the shallow area of the lake there is a similar highly diverse population of plant life around the shoreline and the shores of the islands. Large patches of Myriophyllum Heterophyllum extend out at least to the middle of the center section. 

   Spreading out from the center, both to the North and South, there is an abundance of Najas guadalupensis in the shallow areas, intermingled with Nymphaea odorata, Brasenia schreberi and many other species.

   The shoreline along the southern basin of the lake is also very diverse, with abundant Myriophyllum heterophyllum between the southern-most island and the shore.  This is intermingled with some Potamogeton robbinsii and many other plant species which extends a short distance to the east.  Significant patches of Potamogeton robbinsii are also found on the western shore of the south cove, growing mainly with Najas guadalupensis.

   The Northern basin is approximately twice as large as the southern basin.   The main part of the basin is lightly vegetated with Najas guadalupensis and charaphytes along the shoreline. To the northwest, however, the lake narrows, and the shoreline is so densely vegetated that in several places paths have been raked to gain access to docks.  Myriophyllum heterophyllum is found in small patches along all parts of this shoreline, there are significant amounts of Potamogeton robbinsii along the southern and western shore.

Find Common Plant Names

(65 KB, .pdf format*) 

Species recorded in our 2006 survey of Rogers Lake. Click on plant to view herbarium mount. (invasive species in bold)

Brasenia schreberi

Ceratophyllum echinatum

Charaphyte

Elatine minima

Eleocharis acicularis

Eleocharis sp.

Elodea canadensis

Glossostigma cleistanthum

Gratiola aurea

Lobelia dortmanna

Myriophyllum heterophyllum

Najas flexilis

Najas guadalupensis

Nuphar variegata

Nymphaea odorata

Polygonum amphibium

Potamogeton amplifolius

Potamogeton bicupulatus

Potamogeton epihydrus

Potamogeton natans

Potamogeton pusillus

Potamogeton robbinsii

Proserpinaca palustris

Ranunculus longirostris

Sagittaria sp.

Unidentified sedge

Utricularia gibba

Utricularia purpurea

Utricularia radiata

Utricularia vulgaris

Vallisneria americana


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