River - Kishwaukee
The Kishwaukee River, a tributary of the Rock River, is located in northern Illinois. It is 64 miles in length and has a drainage area in Illinois of approximately 1,220 square miles. Its major tributaries include Kilbuck Creek and Piscasaw Creek. The Kishwaukee River flows west through McHenry, Boone, and Winnebago counties and drains to the Rock River near Morristown.