Tyler Lake is a 187 acre lake located in Goshen, CT. There is a state owned boat ramp located near the middle of the western shoreline. The northern third of the lake contains two coves that are quite swampy and has little development along the shore. The southern two thirds of the lake is heavily developed. The lake is frequently used for recreation such as watersports and fishing. The littoral zone (area where light reaches the bottom allows plants to grow) is less than 4.5 meters.
The 2013 CAES IAPP vegetative survey was a resurvey from 2005 (2005 Survey ). The same invasive species was found in both surveys, Myriophyllum spicatum (Eurasian watermilfoil). In 2005, M. spicatum was only found along the shoreline. In 2013, it had spread to cover much of the deeper portion of the littoral zone. Other native, dominant plants from the 2005 survey such as Potamogeton praelongus (white stem pondweed) and Potamogeton robbinsii (Robin's pondweed) also spread to cover much of the littoral zone in the 2013 survey. The frequency of occurrence among transects (190 points total) of these three co-dominant plants increased between the years of 2005 and 2013. M. spicatum increased from 6% to 17% in 2013. P. praelongus increased from 45% in 2005 to 52% in 2013. P. robbinsii increased from 44% to 51%. M. spicatum frequently grew further from the shoreline than the 80 meter transect covers and may be under represented when looking at just transects.
The two northern coves on the lake were species rich and resembled wetland conditions. Many emergent native species co-existed in the coves including, but not limited to: Eight Potamogeton species (pondweed), Nuphar variegata (yellow water lily), and Nymphaea odorata (white water lily). Shore line species such as Pontederia cordata (pickerelweed) was also common. The southern half of the lake was dominated by submersed species. A diverse plant community grew around the lake up to 4.5 meters.