Hi,
The area surrounding Spirit Lake in Northwest Iowa has over 10 thousand acres of public hunting land. There are many camping areas also. Go to the Iowa Department of Natural Resources site. Non toxic shot is required since most of the land is US Fish and Wildlife land. Lots of natural grass as well as some food plots and marsh. acres and acres of rolling prarie. There are lots and lots of birds there as well. A good dog is a must. Quite a bit of legwork is the norm as well. But it's all worth it.