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DUPAGE COUNTY FEMA Mapping Revisions

The City of St. Charles was notified by the Illinois State Water Survey (ISWS) on behalf of the Federal Emergency Management Agency (FEMA) that they are hosting an Open House meeting to present the newly produced digital Flood Insurance Rate Map (FIRM) and Flood Insurance Study (FIS) for DuPage County, Illinois and Incorporated areas.

This DuPage countywide project incorporated new flood hazard information in the Salt Creek and Sawmill Creek Watersheds, and for select streams within the East Branch DuPage River Watershed and the West Branch DuPage River Watershed. The new study information has resulted in new and modified; base flood elevations, Special Flood Hazard Area (SHFA) boundaries, floodway boundaries, and flood insurance zone designations. The revision also incorporated non-revised flood hazard information from effective FIS reports, FIRMs and Flood Boundary and Floodway Maps as appropriate.

The public open house will be on Wednesday, July 29, 2015 from 4:00pm – 7:00pm at the DuPage County Government Center, Jack T. Knuepfer Building Auditorium, 421 County Farm Road, Wheaton, Illinois. The purpose of the Open House is to review the DuPage County mapping project, present the preliminary FIS report and FIRM panels, discuss the process of reviewing and adopting the documents, and to solicit public comments. Citizens living in or near areas of special flood hazards, realtors, insurance agents, developers, and representatives of lending institutions are encouraged to attend.

For more information on this project:

City of St. Charles website on the Floodplain Info page.

Preliminary maps visit and search for DuPage County on the mapping tool.

FEMA’s website

The website links listed above will only work when using Chrome; you will not be able to access the sites using Internet Explorer.

For more information see the following files:


created Jul 08, 2015 updated Dec 05, 2022