The Mississippi River water level has reached the lowest it has ever been, -10.77 feet. This lack of water has made importing and exporting vital agricultural commodities a serious challenge as fewer barges are able to make their way down the river, and they are having to lighten their loads by 17-38% to keep from bottoming out. The U.S. Army Corps of Engineers have kept traffic flowing by dredging, but new challenging spots in the river can occur at any time.
https://www.agweb.com/news/crops/crop-production/new-supply-chain-setbacks-mississippi-river-levels-hit-all-time-low