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Illinois River
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Illinois River Illinois River, Illinois
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Illinois River
Illinois River Illinois River at Starved Rock State Park, Utica, Illinois.

Illinois River

river, Illinois, United States
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Illinois River, navigable stream of northern and central Illinois, U.S. It is formed by the junction of the Des Plaines and Kankakee rivers in Grundy county, about 10 miles (16 km) southwest of Joliet. It flows generally west across the state until just north of Hennepin, where it turns abruptly south and flows generally southwest and south to join the Mississippi River at Grafton after a course of 273 miles (440 km). The Illinois drains...

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