
Upper Mississippi river levels rose more than 12 feet in two weeks after heavy rain from September 20 to 23, clearing some silted bends but raising flood-stage concerns. Locks 16 and 17 were a few feet from closure, and the Rock Island District had borrowed dredges while flood relief dredging funds remained unreleased.
Renewed high water and possible lock closures threaten to halt upper-river barge traffic during harvest, supporting barge freight rates and delaying grain movements.
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.