"Open state land for haying, grazing"

Iowa is approximately 93% agricultural land, with only 4% of natural areas, privately protected or state-protected. Although I know the flooding has had a terrible impact on the state, it kind of breaks my heart to think of cattle grazing that little bit of land isn't already devoted to agriculture or to cities.
http://www.chicagotribune.com/news/chi-ap-ia-northeylandreques,0,3187433.story
Am I just overreacting? I know state parks aren't exactly pristine habitat, but COME ON, don't we have any limits?