Watersheds - Rock
USGS Cataloging Unit
07090001, 07090003, 07090004, 07090005, 07090006 (Kishwaukee), 07090007 (Green)
The Rock watershed in northern Illinois and southern Wisconsin is part of the Mississippi River basin. Together with its major tributaries, the Green and Kishwaukee rivers, the watershed drains parts or all of 15 Illinois counties and has a total area in Illinois of approximately 5,330 square miles. Agriculture is the primary use of land within the watershed.