US Army Corps of Engineers · Illinois
Thomson Causeway in Illinois. Ringed marker is this site; the other dots are the 42 public campsites we map in Illinois.
Thomson Causeway provides the unique experience of island camping on the great Mississippi River and it's well worth a try! The western edge of the recreation area offers visitors an unobstructed view of the widest spot on the Upper Mississippi River Basin, 3.5 miles from shore-to-shore. Here, campers can enjoy memorable views of the river and the valley, and partake in plenty of great water activities. Recreation Popular activities include fishing, hiking, hunting, biking and boating.
Motocamp routes the vehicle you are actually in and picks up the road surface on the way. Download the state and it keeps working with no signal.
Start a 14-day trialSource: Recreation.gov, dated 2026-08-03, fetched 2026-09-07. Official listing.