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GLIN==> St. Joseph River Sediment Transport Modeling Study Released



Contact: Travis Dahl, 313-226-2137, Travis.A.Dahl@usace.army.mil

St. Joseph River Sediment Transport Modeling Study Released

The U.S. Army Corps of Engineers, Detroit District, announces the release of
the final report for a sediment modeling study of the St. Joseph River,
located in Michigan and Indiana. Since 2002, the Corps of Engineers and
their partners have been working to develop a sediment modeling tool that
could be used by local stakeholders to minimize sediment delivered to the
St. Joseph River and, subsequently, the St. Joseph Harbor on Lake Michigan.
The results from this study will be useful for management decisions to
improve water quality and fish habitat, and to reduce the amount of sediment
eroded from the St. Joseph River watershed. 

During the study, computer models were developed that simulate land-use
changes in the watershed and how those changes affect the amount of sediment
that gets carried into the St. Joseph River. The intent of the study is to
provide guidance on how to better manage the watershed from a sediment
perspective. Some of the scenarios examined in this study were crop rotation
and tillage practices, and the addition of edge-of-field filter strips along
the river. Comparisons were also made with historical (pre-European
development) conditions.

This collaborative effort, made possible by funding under the Great Lakes
Tributary Modeling Program, is a joint initiative between the U.S. Army
Corps of Engineers (Great Lakes Region) and the Great Lakes states. Partners
in this effort for the St. Joseph River included Baird & Associates, Friends
of the St. Joseph River Association, Inc., the City of South Bend, the City
of Elkhart, Indiana DEM, Lake Michigan College, Michigan DEQ, Michigan DNR,
Michiana Area Council of Governments (MACOG), U.S. Geological Survey, U.S.
Environmental Protection Agency, U.S. Department of Agriculture - Natural
Resources Conservation Service, and Western Michigan University.  

Additional information and the final report can be found on the project
website at: http://glc.org/tributary/models/stjoseph.html.

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The objective of the Great Lakes Tributary Modeling Program is to develop
tools for watershed planning that are usable and will be used by
stakeholders who make decisions about soil conservation and non-point
pollution prevention measures, and by other stakeholders who might support
these activities. By supporting state and local measures that will reduce
the loading of sediments and pollutants to tributaries, this work is helping
to reduce the need for - and costs of - navigation dredging, while promoting
actions to delist Great Lakes Areas of Concern (AOCs). 

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