{8/24/12} {10pmCST} Greenville , MS, U.S.A. --Sandbars creep up as the water level drops on the Mississippi River making navigating the Mississippi River difficult for tug boat captains  Friday August 24,2012. Historically low river levels on the Mississippi River are causing havoc on river traffic: grounding barges loaded with grain and fertilizer, traffic jams several miles long and forcing the Coast Guard to close down chunks of the river due to groundings. The area around Greenville, Miss., has closed three times the past week due to groundings. Last year, there were five total groundings the entire low-water season. Locals who fought historic high-water floods last year are this year engaged in a different fight: keeping barges afloat on a vanishing Mississippi.  -- Photo by Suzi Altman, .
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