Elevation Certificate and LOMA

FEMA Elevation Certification

The Elevation Certificate is an important administrative tool of the National Flood Insurance Program (NFIP). It is to be used to provide elevation information necessary to ensure compliance with community floodplain management ordinances, to determine the proper insurance premium rate, and to support a request for a Letter of Map Amendment (LOMA) or Letter of Map Revision based on fill (LOMR-F).



Letter of Map Amendment (LOMA) is an official amendment, by letter, to an effective National Flood Insurance Program (NFIP) map. A LOMA establishes a property’s location in relation to the Special Flood Hazard Area (SFHA). LOMAs are usually issued because a property has been inadvertently mapped as being in the floodplain, but is actually on natural high ground above the base flood elevation.


Deformation Surveys

A deformation survey is performed when a large structure, (retaining walls, buildings, dams, etc…) are believed to be moving or failing. The surface of the object is periodically monitored for movement or deformation. This can also be implemented on rock cuts, surface areas over underground mines, and earthquake fault zones.