Jun 19, 2009
Heavy rains during the middle of the month resulted in the Iowa River at Marengo going above the moderate flood stage level of 15.5 feet on June 19th around 8 pm. It crested around 16.1 feet around 4 am June 20 and again around 16.2 feet around 730 am June 24. It finally fell below the moderate flood stage level around 230 am June 26.
Source: NOAA National Weather Service Storm Events Database (event 173623). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Iowa County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.