sentences:  The stream has been the focus of many efforts to restore and protect water quality undertaken by a variety of governmental, non-governmental and private entities.Butterfield Creek flows through several country club golf courses in Olympia Fields, Flossmoor, and Homewood; management of these tracts has degraded in-stream and riparian conditions necessary for wildlife movement.The Butterfield Creek corridor continues to provide some habitat connectivity between upland headwaters and the complex of Cook County Forest Preserve District properties along Thorn Creek.