Lake Forest is a 66-acre private lake in Bridgeport, surrounded by houses. The lake is drawn down every three years and had not been drawn down for two winters before the 2017 survey.

CAES IAPP performed a resurvey of the lake in 2017, the first survey being done in 2007. In 2007, three plant species were found, with one invasive: minor naiad (Najas minor). The other two plant species were American white water lily (Nymphaea odorata spp. tuberosa) and snailseed pondweed (Potamogeton bicupulatus). The dominant plant in the lake was minor naiad.

In 2017, the same three species were found as well as five additional native species: watershield (Brasenia schreberi), spikerush (Eleocharis species), common duckweed (Lemna minor), marsh primrose-willow (Ludwigia palustris), and leafy pondweed (Potamogeton foliosus). The dominant plant was still minor naiad, covering the majority of the shoreline; however, the abundance was much smaller than in 2007. Snailseed pondweed was found in small patches along much of the shoreline; however, the large band of the species found in 2007 was not found in 2017. American white water lily increased in abundance since 2007, being found in the northernmost cove as well as at one location on the western shoreline of the lake. Chara (Charaphyte), plant-like algae, was also found frequently throughout the lake similar to 2007. Overall, the abundance of native species has increased while the abundance of the invasive (minor naiad) has decreased.