 Northwest Iowa has seen the worst of the excessive rainfall by far as river flooding has pummeled the region. Unfortunately, Iowa State climatologist Dr. Justin Glisson said the upcoming weather won't provide much relief. Yep, so if you look across the northwest, we're looking at particular basins and rivers here. So the Big Sioux River, the Little Sioux River, and then the West Fork of the Des Moines River at Esterville.