Illinois Central Reservoir   Be the first to submit input for Illinois Central Reservoir. If you have info on Illinois Central Reservoir, Jefferson County, Illinois please submit it here to improve this web site.          These outdoors activities are available near Illinois Central Reservoir.   Hotels Near Illinois Central Reservoir: Drury Inn Mount Vernon, Mount Vernon, 12 miles away Thrifty Inn Mount Vernon, Mount Vernon, 12 miles away Comfort Suites Mount Vernon, Mount Vernon, 15 miles away Americas Best Inns-Mt. Vernon, Mount Vernon, 15 miles away Super 8 Mt. Vernon, Mount Vernon, 15 miles away