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Lost Lake (Groton)

Lost Lake
LocationGroton, Massachusetts
Coordinates42°35′36″N 71°31′41″W / 42.5933°N 71.5280°W / 42.5933; -71.5280
Basin countriesUnited States
Surface area204 acres (83 ha)[1]
Average depth6 to 8 ft (1.8 to 2.4 m)[1]
Max. depth30 ft (9.1 m)[1]

Lost Lake also known as Knop/p/s Pond is a reservoir in Groton, Massachusetts, United States. It was formed from three lakes by the headwaters of Salmon Brook. The southern part of the lake is known as Knops Pond where it is near 30 feet deep. It is stocked with rainbow, brown and brook trout every spring and fall and is home to several species of warm water fish.[1] There is also a boat launch located on the northeastern side of the lake.[1]


  1. ^ a b c d e "Knop Pond Groton Division of Fish and Wildlife Report" (PDF). Retrieved 13 January 2015.