The Federal Emergency Management Agency (FEMA) has several methods of changing a map depending on the nature of the change requested. A physical map revision is an official republication of the community’s flood maps. Several types of letters of map change (LOMC) can also make changes to the communities flood maps. A letter of map revision based on fill (LOMR-F) is used when a structure or parcel is elevated on fill above the base flood elevation. A letter of map amendment (LOMA) is used when a property owner believes the property is incorrectly included in the special flood hazard area. A letter of map revision (LOMR) is used to change flood zones, floodways, base flood elevations, and planimetric features.
How do I change or correct a flood map?
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