United States Statutes at Large/Volume 13/38th Congress/1st Session/Chapter 1
1865, ch. 41.
Post, p. 431.
The city of Chicago may erect piers in the navigable waters of Lake Michigan, to protect aqueduct-pipes.Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, That the consent of congress is hereby given to the operation of the eleventh section, chapter fifteen, of the act of the general assembly of the State of Illinois, approved February thirteenth, eighteen hundred and sixty-three, entitled "An act to reduce the charter of the city of Chicago, and the several acts amendatory thereof, into one act, and to revise the same," — which section is as follows: "Said city shall have the power to extend aqueducts or inlet-pipes into Lake Michigan, so far as may be deemed necessary to insure a supply of pure water, and to erect a pier or piers in the navigable waters of said lake, for the making, preserving, and working of said pipes or aqueducts:Piers to be lighted. Provided, That such piers shall be furnished with a beacon-light, which shall be lighted at all such seasons and hours as the light on the pier at the entrance of Chicago river."
Approved, January 16, 1864.