An Elevation Certificate is an administrative tool of the National Flood Insurance Program (NFIP) which is used to provide elevation information necessary to ensure compliance with community floodplain management ordinances, to determine the proper insurance premium rate, or to support a request for a Letter of Map Amendment (LOMA) or a Letter of Map Revision based on fill (LOMR-F). Letter of Map Change (LOMC) is a general term used to refer to the several types of revisions and amendments to FEMA maps that can be accomplished by letter. They include Letter of Map Amendment (LOMA), Letter of Map Revisions (LOMR), and Letter of Map Revision based on Fill (LOMR-F).