Mississippi River/Gulf of
Mexico Watershed
Nutrient Task Force
The Mississippi River/Gulf
of Mexico Watershed Nutrient Task Force, which met on September 24, 1998,
is comprised of federal and state officials. The Task Force's goal is to
"establish and understand the causes and effects of eutrophication in
the Gulf of Mexico, coordinate activities to reduce the size, severity and
duration of this phenomenon, and to ameliorate its affects".
The Task Force's third
meeting consisted of committee updates that reviewed existing data and
information on the hypoxic zone in the Gulf of Mexico. Data seem to
indicate that most of the nitrogen loading in the Mississippi River at the
Gulf of Mexico is coming from the Upper Mississippi River Basin. An
estimated 20 percent of the nitrogen load originates in Iowa and Illinois.
Another area with significant input is the Ohio River. Most of the
nitrogen inputs from the East are from atmospheric deposition, meaning
that nitrogen in the atmosphere is returned to earth through rain.
Most of the solutions
discussed involved modifications of landuse practices and rehabilitation
of natural watershed functions. Specific suggested actions include
implementing "best management practices"; landscape restoration,
including wetlands, riparian zones, and coastal drainage; and stream and
river restoration, where water quality values as well as flood control
benefits are considered. Presenters encouraged the Task Force to pursue
some of these steps now, even as they formulate a long term strategy for
control of the Gulf's hypoxic zone.
Task Force members,
however, did not reach consensus on whether to pursue preliminary control
strategies now or to wait until the committees complete their full review
of existing data. The date for the Task Force's next meeting has not been
set but it will be held sometime in January-February 1999 in Memphis,
Tennessee.
Upper Mississippi River
Congressional Report November 1998
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