 The record-setting flooding in river basins such as the Big and Little Sioux have been aggravated by heavy showers and thunderstorms in the region Thursday and Friday. Kind of delaying some of the flood recovery efforts. Meanwhile... Over the next couple of weeks, we will be watching the rain from this big flood event moving into ever-larger rivers so that water is starting to reach into the main stem Missouri and the main stem Mississippi River. With pockets of moderate to major flooding forecasted.