Homeowners, community officials and others who have adequate scientific and/or technical data may submit those data (including the required MT-2 application forms) to FEMA at any time to support a request for a Letter of Map Revision (LOMR) to revise the flood hazard information shown on the effective FIRM. Individuals who would like changes to non-technical information such as road names, road configurations and corporate limits, should submit the required information to support a map change request to FEMA. If warranted by the technical or non-technical data or information submitted, FEMA will issue a LOMR to the Chief Executive Officer (CEO) of the community and send a copy to the floodplain administrator of the community. The LOMR has the effect of revising the FIRM without physically revising and reprinting the affected FIRM panel(s). LOMRs are generally issued within 90 days of the date all required data, forms and processing fees are received. If the submitted data and information do not warrant a revision to the effective FIRM, FEMA will send a letter to the CEO of the community explaining why the effective FIRM could not be revised and, if appropriate, what action may be taken in the future. All requests for map revisions, including LOMRs must be submitted through the CEO of the community, because it is the community that must adopt any changes to the FIRM.

If you would like FEMA to make an official determination regarding the location of your property relative to the Special Flood Hazard Area, you can submit certain property and elevation information (include the required MT-EZ or MT-1 forms) and request that FEMA issue a Letter of Map Amendment (LOMA), if your property is located on natural ground or a Letter of Map Revision Based on Fill (LOMR-F), if your property has been elevated by the placement of earthen fill.