Oct 1, 2011
A record rain event in May in eastern Montana, other storms in April and May in the upper Missouri River basin and snow melt from a much above normal snow pack all combined to bring record high water levels to the Missouri River chain of reservoirs by late spring. Then residual snow melt and additional rains caused a record 13.8 million and 10.0 million acre feet of runoff above Sioux City during June and July respectively. All of this helped contribute and sustain record releases from the Misso
Source: NOAA National Weather Service Storm Events Database (event 342854). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Nemaha County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.