Watersheds - Illinois River Valley
Illinois River Valley
USGS Cataloging Unit
07130003, 07130011, 07130001, 07120005
The Illinois River Valley in central Illinois is part of the Illinois River basin. It is the land area drained by the Illinois River, excluding the contributing drainage areas of its major tributary watersheds. Agriculture is the primary use of land within the watershed, but there are many grasslands and forests present as well.