Whitetail Campground at Illini State Park offers tent and RV sites along the Illinois River with a boat launch and fishing access nearby.

The campground features electric hookups (with shared electrical boxes between sites—bring a 50-foot extension cord), water, showers, and dump stations, with nightly rates from $10-$20.

Note that the office has inconsistent hours, signage is minimal, and sites require advance reservations; the park is located about 1 hour from Chicago and provides access to the I&M Canal Trail for biking and hiking.