Letter of Map Change (LOMC)


A Letter of Map Amendment is the process where FEMA provides an official amendment to the Flood Insurance Rate Map (FIRM) by letter.  


A Letter of Map Revision is FEMA's modification to a FIRM. Letter of Map Revisions are generally based on the implementation of physical measures that affect the hydrologic or hydraulic characteristics of a flooding source and thus result in the modification of the existing regulatory floodway, the effective Base Flood Elevations (BFEs), or the Special Flood Hazard Area (SFHA). 

FEMA requires that these requests are done by a licensed land surveyor or engineer and requires City approval first.  For City approval please provide the City with the linked: Floodplain application Form along with the MT-1 or MT-2 application form, associated documents, and affidavit of legal interest for affected properties. 

The cost to apply to the City is $106 + $150/hour for engineer review.