Yellow River (Indiana) larger and joins the Kankakee across the border in Illinois. The Kankakee River joins the Des Plaines River south of Joliet, Illinois, forming the Illinois River. Together they flow the length of the state of Illinois before joining the Mississippi River, north of St. Louis. Main Poc was a warrior and chief among the Yellow River Potawatomi first coming to notice at the Treaty of Greenville (July 1795), which was to bring peace to the frontier. Within a year, Main Poc was leading raiding parties across the Mississippi into Spanish Territory. By 1804, Main Poc and Turkey Foot were raiding
Fox River (Illinois River tributary) area. From the chain, the river flows generally southward for , until it joins the Illinois River at Ottawa. Illinois towns and communities that are on the Fox River include (from north to south): Fox Lake, Johnsburg, McHenry, Holiday Hills, Island Lake, Burtons Bridge, Port Barrington, Cary, Fox River Grove, Algonquin, Carpentersville, West Dundee, East Dundee, Elgin, South Elgin, St. Charles, Geneva, Batavia, North Aurora, Aurora, Montgomery, Oswego, Yorkville, Plano, Millington, Sheridan and Ottawa. Collectively, the area surrounding the Fox River is known as the Fox Valley. Around 1 million people live in this area. Native American tribes that lived