Fox River Watershed

About the Watershed

The Fox River originates in Waukesha County, Wisconsin and flows through Illinois into the Illinois River at Ottawa, Illinois. The entire Fox River watershed encompasses 938 square miles in Wisconsin and 1720 square miles in Illinois. 

The Lake County portion of the watershed runs the entire length of the western border of the county. 


  • Fish Lake Drain
  • Flint Creek
  • Sequoit Creek
  • Slocum Lake Drain 
  • Manitou Creek 
Fox River Watershed Map

Related Documents 

**Please note: The U.S. Board on Geographic Names approved the change in December 2021 that officially renamed "Squaw Creek" to "Manitou Creek"