grundy County Flood Hazard Information


Effective Map Products

Effective Flood Insurance Rate Maps for grundy 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


Discovery Meeting(s)

  • Des Plaines Watershed Discovery
  • Lower Fox Watershed Discovery

  • Additional Resources

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