What is a Physical Map Revision (PMR)?
A PMR is an official republication of a community’s NFIP map to effect changes to base (1-percent annual chance) flood elevations, floodplain boundary delineations, regulatory floodways, and planimetric features. These changes typically occur as a result of structural works or improvements, annexations resulting in additional flood hazard areas, or corrections to base flood elevations or SFHAs. The community’s Chief Executive Officer (CEO) must submit scientific and technical data to FEMA to support the request for a PMR. The data will be analyzed, and the map will be revised if warranted. The community is provided with copies of the revised information and is afforded a review period. When base flood elevations are changed, a 90-day appeal period is provided. A 6-month period for formal approval of the revised map(s) is also provided.
