Allen Lake is located within Tri County Fish & Wildlife Area. Tri-Couty Fish and wildlife area was established in 1951 By 1953, formal management of the property was underway. In 1963 , a dam was constructed at the outlet of six natural lakes creating Flatbelly Marsh. The wetland is important for migratory waterfowl, furbearers, shorebirds and fish.
Tri County is dedicated to providing quality hunting & fishing opportunities while maintaining 3,546 acres of land, within 650 aces of lakes & inpoundments. This area is composed of flat to rolling upland fields and gradual to steep slopes of hickory woodlands, falling off to depressions of wetlands. Tri-County includes 10 natural lakes with water depths of 75 feet. For more information visit http://www.in.gov/dnr/fishwild/3082.htm.