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Mary Kennedy DTN Basis Analyst
Fri Aug 1, 2014 01:25 PM CDT

The heavy rain and flooding in the Upper Mississippi River this spring has created another problem for the river: shoaling. Shoaling is the result of sediment settling in the river, mainly in channels near locks, causing the water levels there to become shallow. This can create sandbars that would be dangerous for barges to navigate and they could become stuck. Barges need at least a 9-foot draft to navigate safely and when shoaling occurs, the Army Corps of Engineers needs to dredge the area, closing all traffic on either side of the area.

The USACE St. Paul District reported significant ...

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