The Otter Lake Water Commission was formed in 1967 as a water supply for the towns of Auburn, Divernon, Girard, Pawnee, Thayer and Virden. The Village of Nilwood, Village of Tovey, South Palmyra Rural Water District as well as Henderson Water District also receive water now from Otter Lake.
The lake and water treatment plant were built in 1969. Otter Lake is 765 acres with a maximum depth of 54 feet and an average depth of 21 feet. The lake holds 16,065 acre feet of water at full pool and has a watershed of 12,992 acres.
The Otter Lake Water Commission also has a campground "Otter Lake Park" with 254 sites that are leased annually with some overnight camping available as well. Fishing and boating are allowed at Otter Lake, for more information please visit our park website at www.otterlakepark.net.