Flood Insurance Rate Map. An official map of a community, prepared by FEMA, which has delineated both the special hazard areas and the actuarial (rate premium) insurance zones applicable to the community.
Flood Insurance Rate Map. It identifies base flood elevations, insurance risk zones, and floodplain boundaries. For participating communities, the NFIP program makes a FIRM to help determine flood insurance costs in the various zones. A pre-FIRM building existed before the community began participating in NFIP while a post-FIRM building was constructed after flood zones and flood regulations were established. Pre-Firm buildings were not built to flood control specifications and are therefore more vulnerable to flood damage.
Flood Insurance Rate Map. Provided by FEMA (Federal Emergency Management Agency), this map delineates base flood elevations and flood risk zones, and is used for rating purposes for flood insurance.