Upper Guilford Lake, Guilford
Upper Guilford Lake Species Map
(1.19 MB, .pdf format*)

   Upper Guilford Lake is located in Guilford, CT.  It is a 13 acre lake that does not allow motors. Boat access is by carry in only. It has a few residential homes lining its south-east side but otherwise it is surrounded by forest.

   Surveyed in August of 2008, Upper Guilford Lake had eighteen plant species, none of which are invasive. The most abundant plants were Nymphaea odorata and Brasenia schreberi. Nymphaea odorata was extremely dense in the northwest cove as well as surrounding the large island in the northern end and along the east and west shore. Brasenia schreberi was extremely dense in the northeast cove and was mixed with Nuphar odorata on the west side of the island. Brasenia schreberi extended occurred along most of the shoreline.

   Utricularia purpurea was often mixed with Nymphaea odorata and Brasenia schreberi. It was most abundant around the large north island. Nuphar varigata was patchy along the west side to the north-east cove.


   Sparse populations of  Potamogeton pusillus, Pontederia cordata, Potamogeton bicupulatus, and Utricularia gibbia were found along the south-eastern corner of the lake.  Utricularia intermedia and Utricularia macorohiza (formally U. vulgaris) were  found in low abundance along the south-eastern shoreline.

Find Common Plant Names

(65 KB, .pdf format*)

Species recorded in our 2008 survey of Upper Guilford Lake. Click on plant to view herbarium mount. (invasive species in bold).

Brasenia schreberi

Eleocharis sp.

Ludwigia palustris

Ludwigia sp.

Myriophyllum humile

Najas flexilis

Nuphar variegata

Nymphaea odorata

Pontederia cordata

Potamogeton bicupulatus

Potamogeton epihydrus

Potamogeton natans

Potamogeton pusillus

Sagittaria graminea

Unidentified Sedge

Utricularia gibba

Utricularia intermedia

Utricularia purpurea

Utricularia vulgaris

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