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The County of DuPage
Wheaton, Illinois

DuPage County Flood Map Sets

FEMA Preliminary Flood Insurance Rate Maps 

View Preliminary Flood Insurance Rate Map Webpage

  • Purpose: Preliminary FEMA flood insurance
  • Initial Publication: 3 June 2015

FEMA Digital Flood Insurance Rate Map (DFIRM)

View Digital Flood Insurance Rate Map  

  • Purpose: FEMA flood insurance rating only
  • Initial Publication: 16 December 2004
  • Initial Basis: 31 December 2003
  • Currency: 31 December 2003
  • Source: FEMA's Mapping Contractor Dewberry, using 31 December 2003 DuPage County RFM map data
  • Development: MicroStation CAD, ESRI ArcInfo GIS
  • Maintenance Frequency: Latest official update by FEMA

DuPage Regulatory Flood Map (RFM)

View Regulatory Flood Map  

  • Purpose: All DuPage regulatory purposes
  • Initial Publication: 01 July 2004
  • Initial Basis: 01 July 2004
  • Currency: 10 July2009
  • Source: FEMA's Cooperating Technical
    Partner DuPage County, using adapted FEMA and DuPage County data and accruing FEMA Letters of Map Change
  • Development: ESRI Arc Info GIS
  • Maintenance Frequency: Latest official update by DuPage, usually quarter-annually
  • FEQ Status Map-This map shows the status of FEQ models for watersheds in DuPage County. The watersheds include Salt Creek, East Branch DuPage River, West Branch DuPage River, and Sawmill Creek.