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Property Flood Factors

  • How is my Flood Factor calculated?
  • Understand the differences between FEMA and Flood Factor 
  • Where does the information on Flood Factor come from?
  • Why is my Flood Factor different from my neighbor’s?
  • How are flood risk layers created for map visualization?
  • How is future environmental change incorporated into Flood Factor?
  • What are boundaries and footprints and how are they used to calculate my Flood Factor?
  • What does Flood Factor’s presentation of uncertainty mean?
  • What is the First Street Foundation Flood Model and how is it used to calculate my home’s Flood Factor?
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Flood Factor™ is a product of First Street Foundation® .

Intended for informational purposes only. The Flood Factor model is designed to approximate flood risk and not intended to include all possible risks or mitigations of flood.