625 ILCS 45/5-12
Current through Public Act 103-593
A wake is defined as a movement of the water created by a boat underway great enough to disturb a boat at rest, but under no circumstances shall a boat underway exceed 5 miles per hour while in a posted "No Wake" area. "No Wake" areas shall be clearly posted with buoys or appropriate signs except as provided in Section 5-7 of this Act. All buoys or signs posting "No Wake" areas shall meet the specifications as prescribed by the United States Coast Guard or the Illinois Department of Natural Resources.
625 ILCS 45/5-12