DFIRM Acronyms and Definitions

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List of Acronyms and Definitions

  • BFE - Base flood elevation or the water surface elevation contour line
  • DFIRM - Digital Flood Insurance Rate Map
  • FEMA - Federal Emergency Management Agency
  • FIRM - Flood Insurance Rate Map
  • FIS - Flood Insurance Study
  • NAVD88- North American Vertical Datum of 1988
  • NFIP - National Flood Insurance Program
  • NGVD29- National Geodetic Vertical Datum of 1929
  • NONSFHA - Not a Special Flood Hazard Area (NONSFHA includes FIRM Zones D, X and X (shaded))
  • LOMA - Letter of Map Amendment
  • LOMC - Letter of Map Change
  • LOMR - Letter of Map Revision
  • LOMR-F - Letter of Map Revision based on fill
  • PAL - Provisionally Accredited Levee
  • PDFIRM - Preliminary Digital Flood Insurance Rate Map
  • SFHA - Special Flood Hazard Area (FIRM Zones A, AE, AH, and AO)

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