lake County Flood Hazard Information

Effective Map Products

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

NFHL Viewer (more detailed flood data displays when zoomed in). It may also be slow.

Launch full screen NFHL Viewer

Preliminary Map Products

2020 Preliminary FIRMs, FIS, and FIRM database for panels under revision are available to download from the FEMA MSC

Changes Since Last FIRM

  • Flood Map Changes Viewer (FEMA)

  • Discovery Meeting(s)

  • Chicago River Watershed Discovery
  • Des Plaines Watershed Discovery
  • Upper Fox Watershed Discovery

  • Additional Resources

  • Floodplain Mapping 101
  • Destined for DFIRMs - stream studies becoming flood maps
  • Building Footprints
  • Topographic Wetness Index
  • Links to National Flood Insurance Program (NFIP) Information