I'm very confused about the location! Lyran Park is NOT where you are describing; Lyran Park is miles NORTH of Rt 20. Whatever park you're describing near the airport (South Bend & Kishwaukee) is NOT Lyran Park. Also, the river is the Rock River, not the Kishwaukee River.
Dean, Lyran Park is on S Bend Rd, along the Kishwaukee River, just south of Kishwaukee Rd and the point where the Kish empties into the Rock.