ILLINOIS RIVER: Latitude = 38.965597, Longitude = -90.430294, Zoom=13
Right Clicking anywhere on the map displays latitude, longitude, and address at that location:
Navigation Mile 0 of the Illinois River is at the mouth of the Illinois as it flows into the Upper
Mississippi River near Grafton, IL. It flows 275 miles to its source, which is at the juncture of the Dupage River and
Des Plaines River. This Illinois River viewer covers miles 0 to 303, and includes miles on the Des Plaines River and the
Chicago Sanitary & Ship Canal, all part of the Illinois Waterway.