(20 ILCS 3967/10)
As used in this Act:
"Council" means the Illinois River Coordinating Council.
"Illinois River Watershed" or "watershed" means the lands that drain
directly or through tributaries into the Illinois River, including but not
limited to lands
surrounding the Des Plaines River, Fox River, Kankakee River, La Moine
River, Mackinaw River, Sangamon River, Spoon River, and Vermilion River.
(Source: P.A. 90-120, eff. 7-16-97.)