cook County Flood Hazard Information


Effective Map Products

Effective Flood Insurance Rate Maps for cook County may be viewed and/or downloaded at the FEMA Flood Map Service Center (MSC)



Preliminary Map Products

2021 Preliminary products are available below, or at higher resolution from the FEMA MSC:

17031C0013K
17031C0014K
17031C0018K
17031C0019K
17031C0142K
17031C0144K
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17031C0161K
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17031C0169K
17031C0176K
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17031C0186K
Index panel 1
Index panel 2
Index panel 3
Index panel 4
Preliminary FIS
Preliminary FIRM Database


Consultation Coordination Officer (CCO) Meeting

  • Meeting Recording (mp4)
  • Meeting Presentation (pdf)

    • Public Open House Meeting

  • Meeting Presentation (pdf)


    • Changes Since Last FIRM

  • Flood Map Changes Viewer (FEMA)


    • Discovery Meeting(s)

  • Chicago River Watershed Discovery
  • Des Plaines Watershed Discovery
  • Lower Fox Watershed Discovery
  • Upper Fox Watershed Discovery
  • Draft Cook County Total Wetness Index Geodatabase

    • Additional Resources

  • Destined for DFIRMs - stream studies becoming flood maps
  • Building Footprints
  • Topographic Wetness Index
  • Links to National Flood Insurance Program (NFIP) Information

    • What is a DFIRM?

    The DFIRM Database is a digital version of the FEMA flood insurance rate map that is designed for use with digital mapping and analysis software.

    A sample DFIRM showing areas of greater flood risk in blue

    The DFIRM is designed to provide the user with the ability to determine the flood zone, base flood elevation and the floodway status for a particular location. It also has NFIP community information, map panel information, cross section and hydraulic structure information, and base map information like road, stream, and public land survey data.