(a) Regulated Area. All waters of the South Branch of the Chicago River from the West 18th Street Bridge at position 41[deg]51[min]28[sec] N, 087[deg]38[min]06[sec] W to the Amtrak Bridge at position 41[deg]51[min]20[sec] N, 087[deg]38[min]13[sec] W (NAD 83).
(b) Special Local Regulations. The regulations in Sec. 100.901 apply. No vessel may enter, transit through, or anchor within the regulated area without the permission of the Coast Guard Patrol Commander.
(c) Effective Date. These regulations are effective annually on the second Friday and Saturday of July from 11:30 a.m. to 5 p.m. The time and date for this event are subject to change. In the event of a schedule change, the Coast Guard will issue a Notice of Enforcement with the exact date and time that this regulated area will be enforced. [USCG-2013-0327, 78 FR 48314, Aug. 8, 2013]