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Mississippi and Illinois River Confluence

Mississippi and Illinois River Confluence

Grafton, Illinois

The Illinois River flows into the much larger Mississippi River after flowing 273 miles from northeastern Illinois. An archipelago of islands is located at the point of confluence, opposite the town of Grafton, Illinois. In this photograph, taken on a calm day in 1991, the Mississippi River is on the left of the islands, and the Illinois River is on the right.

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