
High water on the Mississippi has kept the Lower Mississippi River at elevated levels for over 60 days, slowing barge movements from St. Louis to New Orleans. Flooding closed Locks 16 and 17 from May 11, with closures expected to last until May 14, and tows out of St. Paul were restricted to nine barges.
Barge bottlenecks raise freight costs and delay grain shipments from the Upper Midwest, which tends to widen Gulf basis and support local cash prices while pressuring river-delivered supplies.
Not enough comparable past events yet for a historical read.
After 284 past neutral logistics events, Corn moved a median -0.0% over 5 sessions (49% higher; middle half -1.3% to +1.4%), and -0.2% over 20.
After 230 past neutral logistics events, Soybeans moved a median +0.4% over 5 sessions (55% higher; middle half -1.4% to +2.0%), and +0.1% over 20.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.