Clinton Lake State Recreation Area is an Illinois state park in DeWitt County built around a 9,300-acre recreation area. Part of the state park system in central Illinois, it is defined by the broad landscape surrounding Clinton Lake and ranks among the larger public outdoor areas in the region. Its significance lies in its recreational character, with the lake and adjacent land providing the setting for outdoor use rather than urban development or architectural features. It continues to serve as a state-managed recreation area in Illinois today.