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Upper Midwest Environmental Sciences Center

Illinois River - Alton Reach

UMESC Projects Alton
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Alton is used to describe the unimpounded portion of the Illinois River. It extends from the Mississippi River upstream to the La Grange Lock & Dam south of Beardstown, Illinois.


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URL: http://www.umesc.usgs.gov/rivers/illinois/alton/alton.html
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Page Last Modified: January 29, 2016