Mississippi River dropping slower than expected

Published on NewsOK Modified: December 5, 2012 at 1:48 pm •  Published: December 5, 2012
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ST. LOUIS (AP) — A revised Mississippi River forecast offered a bit of a reprieve for shippers Wednesday, showing the water level isn't dropping as quickly as feared. Still, at least two large barge companies already are reducing their loads over concerns about the river's depth.

Months of drought have left the Mississippi near historic low levels, a problem worsened last month when the U.S. Army Corps of Engineers reduced the outflow from an upper Missouri River dam, lessening the amount of water that drains into the Mississippi where the rivers converge near St. Louis.

The river at St. Louis on Wednesday was about 13 feet deep. The Coast Guard has said further restrictions on barge traffic — most notably in a 180-mile stretch between St. Louis and Cairo, Ill. — are likely if the river dips to around 9 feet, though the decision is based on observation of conditions and not the level on the gauge.

Earlier National Weather Service forecasts had projected getting to the 9-foot level by Sunday or Monday. But a Weather Service hydrologist told The Associated Press on Wednesday that revised modeling now calls for reaching that level around Dec. 29, then dropping another foot by Jan. 2.

A message seeking comment about the revised forecast was left for Coast Guard officials.

Hydrologist Mark Fuchs said the earlier modeling didn't account for water draining back into the Missouri River from its flood plain — draining that is occurring because the river is so low.

"It's prolonging everything," Fuchs said, though he warned the Mississippi "is going to get down there eventually if it doesn't rain."

Barge operators know that as well. Two operators say they've already decided to reduce the size of their barge loads.

Cargo Carriers has shortened its drafts — the submerged portion of barges — to 7 feet for vessels headed from the Gulf of Mexico at Louisiana to points north of St. Louis, Cargo Carriers President Rick Calhoun said. Cargo Carriers is the shipping arm of Minnesota-based Cargill Inc., operating 1,300 barges.

Drafts generally are as low as 12 feet underwater but have been restricted to 9 feet because the river is so low, restrictions that could tighten further as the river level drops.

Calhoun said every foot of reduced draft means 200 tons — or 13 percent — less cargo being shipped. At this time of year, Calhoun said, the company's northbound cargo is road salt and fertilizer.

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