What is a Letter Of Map Revision (LOMR)?

A LOMR is an official revision to the currently effective FEMA map.

It is used to change:

  • Flood elevations
  • Flood zones
  • Floodplain and floodway delineations
  • Planimetric features

All requests for LOMRs must be made to FEMA through the chief executive officer of the community, since it is the community that must adopt any changes and revisions to the map. A LOMR is usually followed by a physical map revision.

Show All Answers

1. What is a floodplain?
2. What is a floodway and who designates it?
3. How do I find out if my property is in a floodplain?
4. What are the penalties if I don't secure all my permits?
5. How are premiums calculated?
6. What constitutes as substantial improvement or substantial damage?
7. How are flood hazard areas and flood levels determined?
8. What are flood hazard zones and what do they mean?
9. If a Flood Insurance Rate Map (FIRM) is believed to be incorrect, what can be done to change it?
10. What is Letter Of Map Amendment (LOMA)?
11. What comprises technical or scientific data?
12. What is a Letter Of Map Revision (LOMR)?