Mississippi River Flooding May Cause Large Dead Zone

Major flooding on the Mississippi River likely to cause large Gulf of Mexico dead zone.

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The actual size of the 2011 hypoxic zone will be released following a NOAA-supported monitoring survey led by the Louisiana Universities Marine Consortium between July 25 and August 6.  Collecting these data is an annual requirement of the Mississippi River/Gulf of Mexico Watershed Nutrient Task Force Action Plan.

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