Representative imageIllinois
Lake Decatur
Illinois
About this destination
Lake Decatur is a reservoir located in Macon County, Illinois, USA. It was formed by a dam on the Sangamon River in 1922. The lake covers an area of 2,800 acres and has a maximum depth of 75 feet. It provides drinking water for the city of Decatur and is used for recreational activities such as fishing, boating, and water sports. The lake is also home to a variety of wildlife, including bald eagles, ospreys, and great blue herons.