May 15, 2009
Heavy rains from May 13th to May 15th resulted in the La Moine River near Colmar going above the moderate flood stage level of 22 feet around 9 pm on May 15 and the major flood stage level of 24 feet around 1:30 am on May 17. It crested around 24.84 feet around 6 pm on May 17. It fell back below the major flood stage level around 10:30 am on May 18 and the moderate flood stage level around 6 am on May 19.
Source: NOAA National Weather Service Storm Events Database (event 170184). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in McDonough County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.