Feb 20, 2018
Periods of moderate rainfall on February 19-20th resulted in 1.25-2.50 inches of rain. The rain fell on top of a snow cover of 0 to 3 inches and a frozen ground. Significant runoff resulted in widespread areal flooding and river flooding over southeast WI and portions of south central WI. Several rivers reached moderate and major flood stage.
Source: NOAA National Weather Service Storm Events Database (event 741752). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Rock County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.