Floodplain Maps

The Federal Emergency Management Agency (FEMA) issues maps that are used to regulate development projects in the floodplain and establish flood insurance rates. These maps are called Flood Insurance Rate Maps or FIRMs. The Village of Lisle Floodplain Map is a simplified look at the floodplains in Lisle. To review a detailed map of the floodplain, use the Village's Online Floodplain Map

PRELIMINARY Flood Insurance Rate Maps

The REVISED Preliminary Flood Insurance Rate Maps are now available. Please see the schedule below for details on upcoming Open Houses and map adoption:
June 6, 2015 - Preliminary Flood Maps Released

June 1, 2017 - REVISED Preliminary Flood Maps Released

July 27, 2017 - DuPage County Open House, County Auditorium, additional details will follow when available

July 27, 2017 - Start of 30-day Public Comment Period
August 1, 2017  - Village Open House. Lisle Police Station Training Room, 7 p.m. - 8:30 p.m., 5040 Lincoln Avenue (Route 53).
Postcards were sent to floodplain residents most affected to notify them of the meeting. All are welcome to attend. 
February 28, 2018 to May 29, 2018 - 90-Day Appeals Period

Undetermined - New Maps Become Effective 
                          New Flood Insurance Premiums Become Effective
To view your property on the Preliminary Flood Insurance Rate Maps, type in your complete address, including city and state in the search bar. These maps show the existing floodplain and floodway in solid blue and red, while the preliminary floodplain and floodway is shown in cross-hatched blue and red. 
The revised maps and Flood Insurance Study Report will soon be available at the Lisle Public Library Adult Reference Desk. 

FEMA Flood Insurance Rate Maps

Maps are available from the following sources: 
  • Paper copies can be viewed at Village Hall or the Lisle Public Library, Adult Reference Desk
  • Maps can be viewed and printed online from FEMA Map Service Center

Letters of Map Amendment / Letters of Map Revisions

The Letters of Map Amendment (LOMAs) / Letters of Map Revisions (LOMRs) are issued by FEMA to clarify if a property is in the regulatory floodplain or to update the maps for new studies. Letters have been issued for individual properties as well as subdivisions, including:
  • Arboretum Glen
  • Arbor Trails
  • Peach Creek
  • Wood Glen Park

Copies of LOMAs and LOMRs are available at Village Hall.

DuPage Regulatory Flood Maps

The DuPage County Regulatory Flood Maps are used by the Village of Lisle and DuPage County when reviewing permit applications for new buildings, additions, decks, sheds, and grading. These maps are revised by the county on a regular basis and can vary from the FIRMs. These maps are large files and may load slowly.
Visit villageoflisle.org to see the preliminary maps and learn when map changes take effect.

For general information, please contact the Development Services Department at 630-271-4150.