Flood Protection

Federal Emergency Management Agency (FEMA) Letter of Map Revision-Current

A Letter of Map Revision (LOMR) is FEMA's modification to an effective Flood Insurance Rate Map (FIRM).  LOMRs are generally based on better topographic, modeling, or physical structures that affect the hydrologic or hydraulic characteristics of a flooding source and thus result in the modification of the effective Base Flood Elevations (BFEs), the Special Flood Hazard Area (the 100-year floodplain), and sometimes the Flood Insurance Study (FIS) report. The LOMR officially revises the Flood Insurance Rate Map (FIRM). 

Currently, there are three LOMRs being processed by FEMA: 

Howard County Government's Federal Emergency Management Agency (FEMA) Flood Insurance Rate Map (FIRM) Information Service

As a public service, Howard County Government provides residents with the following floodplain information upon request based on the Federal Emergency Management Agency’s (FEMA’s) effective Flood Insurance Rate Map (FIRM):

  • Flood zone, base flood elevation and depth, and additional FIRM information;
  • Location and elevation of a property or building structure relative to the Special Flood Hazard Area (SFHA);
  • Information on the mandatory flood insurance purchase requirement for buildings that have federal or federally related loans or grants and are located in the SFHA;
  • Information on and copies of Elevation Certificates, Letters of Map Amendment (LOMA), Letters of Map Change (LOMC), and Letters of Map Revision (LOMR);
  • Information on historic FIRMs; and
  • Information on County-regulated floodplains and local drainage problems.

In order to obtain floodplain information, you can contact the Stormwater Management Division by e-mail at DoIFlood@