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Floodwaters at Lock and Dam 20 on the Mississippi near Canton, Missouri, carry hundreds to thousands of trees that jam the upstream gates. The debris halts lock operations and requires a lengthy cleanup by Corps crews once river levels drop.
Lock closures stop barge traffic and create queues, raising freight costs and delaying grain shipments on the upper river. Disruptions of this kind can widen interior basis for corn and soybeans while they last.
Not enough comparable past events yet for a historical read.
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.