Jul 14, 2013
A line of storms moving across north central South Dakota during the early morning hours on the 14th became heavy rainfall producing thunderstorms for northeastern South Dakota. Rainfall amounts of 2 to 5 inches caused mainly localized flooding. However in Grant County, a 20 foot wide by 17 foot deep culvert on 468th Avenue in Twin Brooks was washed away by flash flooding. The Grant County Highway Department said fixing the culvert would cost more than $40,000 dollars.
Source: NOAA National Weather Service Storm Events Database (event 468698). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Grant County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.