It’s a 2 mile drift downriver from the boat launch to the campground. When we were there the river was placid and we had no trouble paddling back when our stay was over. The conditions on the river depends largely on the dam 3 miles up river in Oregon. We have a 17’ canoe, so we had lots of gear and momentum. The sites are primitive, but have tables and fire pits. Since all sites are on the riverbank and there’s a state forest across the river, you really do feel like you’re away from it all. However on the backside of the grounds you can cross over Rt. 2 to the parking lot at the prairie and forest trailheads. If the Rock River seems too big for you, drive upriver 11miles  to He-Leo Two Rivers Preserve. Easy to miss, but worth it. From there you can check out the shady, winding and intimate Leaf River. Nearby are two other state parks worth exploring; Lowden and White Pines.