FEMA Map Modernization Effort in Minnesota

As part of a national 5-year map modernization effort, FEMA floodplain maps are being updated. If available, newer flood elevation data are being used, and newer elevation data (topography) are being used to draw the boundaries of the floodplain. The cities and unincorporated areas are being mapped together, so there will not be separate city maps. The paper panels will have an aerial photo background, making it easier to find areas. The map will also be produced in a digital format, meaning that the floodplain can be a layer in a computer mapping system, and can be overlaid on other layers such as the aerial photos, parcels, etc.

What does the FEMA Map Modernization Process Involve?

  • Key steps (complete process takes 2 or more years):
    • Scoping - Gathering available data
    • Map production - Map studies & production
    • Preliminary Map - date preliminary maps mailed to cities and county
    • Open House - Local Official Meeting and Public Open House
    • 90-Day begins - 90-day appeal period starts after 2nd notice in local papers; only applicable if flood elevation changes are proposed
    • 90-Day ends - end of the 90-day appeal period
    • Letter of Final Determination (LFD) - Formal letter sent to cities and county saying that the maps are final and become effective in 6 months
    • Map Effective - Date the final maps become effective (official) for flood insurance and zoning
    • No Map Update - Due to limitations in FEMA funds, 43 Minnesota counties will not get updated maps during the Mod Modernization Effort. Options for getting those counties better data are being evaluated.
  • FEMA map modernization process - Flowchart of key steps/timeline pdf
  • FEMA map modernization process - Text explanation of key steps pdf
  • How do I challenge what's shown on the FEMA preliminary maps? pdf
  • Community Map Review Checklist pdf

Where can I view the preliminary or new effective maps?

What is the timing for the FEMA map updates in Minnesota?