615 ILCS 5/9
Current through Public Act 103-1052
The Department of Natural Resources shall carefully investigate any and all complaints that may be made that any person, company or corporation is attempting to interfere with the free and unobstructed navigation of any of the public bodies of water of the State, and if it finds that the complaint is well founded, the Department shall enter such order as may be required to prevent wrongful interference with such navigation.
615 ILCS 5/9