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The US Coast Guard placed Mississippi River Zone 1 (Grafton, mile markers 0.0 to 9.9) and Zone 2 (Hardin, mile markers 10 to 49.9) in the Low Water Watch phase on June 3, 2026. Deep-draft tows were advised to depart the area and vessels were directed to transit slowly near fleeting areas.
Mariners were asked to report shoaling and hazards.
Low-water restrictions near St. Louis limit barge loads and raise freight costs on a key grain export corridor. That tends to widen Gulf-to-interior basis and push barge rates higher.
forth.newsUS Coast GuardJun 3, 2026Not 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.
