Illinois River 20 miles (32 km) of its course, the Illinois is separated from the Mississippi River by only about five miles, by a peninsula of land that makes up Calhoun County. The Illinois joins the Mississippi near Grafton, approximately 25 miles (40 km) northwest of downtown St. Louis and about 20 miles upstream from the confluence of the Missouri River and the Mississippi. South of Hennepin, the Illinois River is following the ancient channel of the Mississippi River. The Illinoian Stage, about 300,000 to 132,000 years ago, blocked the Mississippi near Rock Island, diverting it into its present channel. After the
Indian Creek (Fox River tributary) County. A lake and State Recreation Area named for Chief Shabbona, is located in the community of Shabbona, which was also named for the Indian chief. Paw Paw Creek is a short tributary of Indian Creek that runs in a southeasterly direction near Paw Paw, Illinois. Indian Creek (Fox River tributary) Indian Creek, also known as Big Indian Creek, is a tributary of the Fox River in Lee, LaSalle, and DeKalb counties in Illinois. Indian Creek rises north of Paw Paw, Illinois, near Shabbona Grove and joins the Fox River near Wedron. The stream meanders across parts of Lee, LaSalle