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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".
How big is the dead zone? According to a report provided by LSU to the Mississippi Sound Coalition, the dead zone in the Mississippi Sound is roughly 1,600 square miles. In comparison, Lake ...
An example of this is the dead zone located off the coast of the Mississippi River. According to NOAA, the 2016 predicted size of this dead zone is going to be approximately 5,898 square miles with a nitrate concentration of 146,000 metric tons of nitrate flowing down the Mississippi and Atchafalaya River into the Gulf of Mexico. [5]
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. ...
Twelve states, including Kentucky, make up the Hypoxia Task Force, with a mission of curbing nutrient pollution in the Mississippi River and shrinking the dead zone. Progress is measured from a ...
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 'dead zone' off the Gulf coast is larger than NOAA predicted. The massive area poses danger to marine life, and recovery could take decades.
The Mississippi River drains the largest area of any U.S. river, much of it agricultural regions. Agricultural runoff and other water pollution that flows to the outlet is the cause of the hypoxic, or dead zone in the Gulf of Mexico.