The USGS supergage site and the IDEM station are co-located at this location, and are located in northern Newton County in northwest Indiana near Shelby, IN. This location captures the Kankakee River exports into Illinois from Indiana. The Kankakee River is located in northwest Indiana and the watershed covers all or part of 11 Indiana counties. The Kankakee River stretches across northwest Indiana for 90 miles starting near South Bend in St. Joseph County flowing to the Illinois State line. The Yellow River and Iroquois Rivers are the important tributaries to the Kankakee River and join up with the river in the state of Illinois.