This Division is responsible for stormwater management and planning for the protection and sustainable use of the County's water supply. McHenry County is dependent on groundwater for 100% of its potable water, including all private and public water supplies.

This Division responds to concerns regarding site grading, flooding, drainage, and wetlands. Division staff assists property owners in obtaining stormwater management permits and reviews building permits for compliance with stormwater regulations.

Division staff also serves as the liaison to the Stormwater Management Commission, the Stormwater Technical Advisory Committee and the Groundwater Taskforce.  

Fox River Flood Control Commission

During the 100th Session of the Illinois Legislation, Public Act 100-0730 was enacted.  This Act created the Fox River Flood Control Commission and tasked the group with presenting a report to the General Assembly by December 31, 2019 regarding problems and solutions to flooding on the Fox River. 

Each community and township within the Fox River Watershed is asked to fill out the following survey regarding the type and extent of flooding in the community.  The results of the surveys will be used to help quantify the problem and formulate solutions for the Fox River Watershed flooding.  The survey can be accessed here. 

Please click here for a link to the Illinois Department of Natural Resources webpage for the Commission. A copy of the final report may be found on the IDNR's webpage.

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