Twin Lake South, Simsbury
Twin Lake South

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   Twin Lake South is a public, man-made lake located in Simsbury, CT.  It is 16.3 acres and is deeper than the lake to the north. The deepest point in the lake is 3.5 meters.  The lake is located in the Nod Brook Management Area, land owned and maintained by the DEEP.  The lake is used yearly for field trials for dog hunting.  Various field trial competitions are held on the management area’s land.

   The CAES IAPP survey of the Twin Lake South found 11 species growing in the lake, including two invasive species.  The invasive species were Myriophyllum spicatum (Eurasian watermilfoil) and Potamogeton crispus (Curly leaf pondweed).  Plants could be found growing almost everywhere light could reach the bottom of the lake to allow plants to grow.  There was not one dominant species found growing in the lake.  The invasives M. spicatum and P. crispus were found growing co-dominantely with the natives Ceratophyllum demersum and Potamogeton pusillus.  The southern cove of the lake had the greatest plant densities with most of the plants growing in thick mats to the surface of the water.  One floating plant species was found, Brasenia schreberi. Various shorelines species were present.  As with Twin Lake North, the native Pontederia cordata was found growing in dense thin patches around the majority of the shoreline. 

Find Common Plant Names

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Species recorded in our 2012 survey of Twin Lake South. Click on plant to view herbarium mount. (invasive species in bold)
Brasenia schreberi
Najas flexilis
Spirodela polyrhiza


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