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In late summer 1988 the dead zone disappeared as the great drought caused the flow of Mississippi to fall to its lowest level since 1933. During times of heavy flooding in the Mississippi River Basin, as in 1993, "the "dead zone" dramatically increased in size, approximately 5,000 km (3,107 mi) larger than the previous year". [72]
The Mississippi River [b] is the primary river of the largest drainage basin in the United States. [c] ... the primary contributor to the Gulf of Mexico dead zone. ...
The Mississippi River drains about 41% of the nation's water systems into the Gulf of Mexico. The river itself begins at Lake Itasca in Minnesota and runs through 10 states before it reaches the Gulf.
Some critics say that the state focuses too heavily on plans to redirect the flow of the Mississippi River. ... from 41% of the United States flows down the Mississippi, creating a “dead zone
The Mississippi River/Gulf of Mexico Watershed Nutrient Task Force undertakes the challenge of eliminating the dead zone in the Gulf of Mexico as well as promoting the implementation of new farming practices and nutrient runoff management.
A 'dead zone' off the Gulf coast is larger than NOAA predicted. The massive area poses danger to marine life, and recovery could take decades. A 'dead zone' is growing in the Gulf of Mexico.
The likely starting cause is waste nutrients being carried into the estuaries by the Mississippi River, although the oil made it worse. The dead zone appeared to be created by low amounts of oxygen in the region, known as hypoxic zones, as a result of phosphorus and nitrogen blocking out sunlight. It grows the most during the summer, when the ...
A group of dead trees stand along the Mississippi River at Reno Bottoms, a wildlife area near the border between Minnesota and Iowa, on July 18.