Low water levels on the Mississippi
Low water levels that are restricting shipping traffic, forcing harbor closures and causing barges to run aground on the Mississippi River are expected to continue.
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Greenville, Miss.
Barges and their towboats accumulate alongside the Mississippi banks of the Mississippi River near Greenville, Miss., Tuesday, Aug. 21, 2012.
Credit: AP Photo/Rogelio V. Solis
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