Before and after: See how the Mississippi River and its tributaries have dropped to record lows  CNNThe Mississippi River Is Drying Up, Disrupting a Vital Supply Lane | WSJ  Wall Street JournalMississippi River’s Low Water Levels Stalls Boat Traffic, Stokes Economic Fears  NBC NewsLow Mississippi River levels are impacting local farmers  FOX13 MemphisBarges on the move despite dramatically low Mississippi River levels  FOX 2 St. Louis