These are locations we have had the privilege to fly. Some may have access restrictions. Check with local flyers for information.
Iowa Slope Flying Sites
The Levees – Clinton, IA – along the bank of the Mighty Missip is an earthen levee that works for smaller planes.
The Dam at Saylorville Lake – Nice Earthen dam near Des Moines. A slightly NE wind seems to work best.
There are some other sites that are available at certain times.
Contact the Eastern Iowa Soaring Society (EISS) for info if you are going to be in the area.