winnebago County Flood Hazard Information

Effective Map Products

Effective Flood Insurance Rate Maps for winnebago 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

Project Initiation Meeting


  • Meeting Recording (MP4)
  • Meeting Presentation (PDF)

  • Discovery Meeting(s)

  • Lower Rock River Watershed Discovery in Winnebago

  • 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