When we went to Yellowstone this June,Turbs showed us a nice spot in Iowa,I'll find the name n post ASAP,may not b on you're rt. southern Iowa. If you are going across 90 we fell in to a nice place, in Sioux Falls called Big Sioux Recreation area. Short drive to the falls, nice sights, walking path on the river, look it up. Also,stayed at Rafter J Bar Ranch, in the Black Hills, nice !
Found the spot in Davenport IA it's called Scott county conservation area, West lake park, very nice, I think $12/ night w electric n h20. We only stayed one night, but it was prity cool.
This was our maiden voyage with our new toy hauler, Work and Play, stock tires, did fine, juz keep n eye on them,at all stops.