The Chain O'Lakes and the upper Fox River were placed on no-wake today, while the Fox River from Stratton Lock and Dam to the Montgomery dam was closed to boating. The Kishwaukee River in Winnebago County was also closed to boating.
Here's the explanation from the Fox Waterway Agency:
MONDAY UPDATE: Effective 1:00PM The Lower River has been declared "CLOSED" Effective 8:00AM The Upper Fox River and Chain O'Lakes were declared NO WAKE . The Fox Waterway Agency has verified that conditions for navigation warrant restrictions on the Lakes (Zone C) and upper Fox River/Johnsburg area (Zone B) and thus, the FWA has declared a NO WAKE on Zone B and C as of 8am Monday, June 22nd. CLOSED on the lower river declared as of 1pm Monday, June 22nd for Zone A (Algonquin to the Stratton Lock and Dam). These decisions were made as per the FWA Code, Chapter 5, as well as Flood forecasting data provided by the National Weather Service. This information is also available on the FWA website (www.foxwaterway.org).
And the explanation from the IDNR:
Rising Waters Lead to Restricted Boating Access on the Fox and Kishwaukee Rivers
No recreational watercraft allowed until further notice
SPRINGFIELD - Due to flooding, swift currents and floating debris, the Illinois Department of Natural Resources is restricting boating access on the Fox River from the Montgomery Dam north to the Stratton Dam in Lake, McHenry and Kane Counties and the Kishwaukee River in Winnebago County. These restricted areas are off limits to all recreational watercraft until further notice. IDNR has authorization to designate restricted boating areas when navigation is deemed significantly hazardous.