70 ILCS 1570/1

That the commissioners of Lincoln Park, a board of park commissioners existing under the laws of this State and having control of a certain park or parks, boulevard and driveways bordering upon the public waters of Lake Michigan in the County of Cook in this State, shall have the power to extend such parks, boulevards and driveways over and upon the submerged lands under the waters of Lake Michigan and over and upon lands adjacent or adjoining thereto, in the manner hereinafter set forth.