Current effective FIRMs can often be viewed at local community offices. They are also available to view and purchase online at FEMAs Map Service Center website. These maps can be amended or revised to reflect existing topography or changes in flood characteristics. The Letter of Map Amendment (LOMA) process is often used to challenge a lender's determination that a building is in the floodplain.
FEMA is currently involved in an effort to "modernize" and update their FIRM inventory. FIRMs need to be updated for a number of reasons, including outdated base maps, development in watersheds, advancements in flood modeling, etc. Modernized FIRMs include an updated orthophoto base map. These FIRMs will be known as Digital FIRMs because they will be produced as a digital GIS based product. The FHMP has partnered with FEMA to assist in the management and coordination of flood map modernization in Massachusetts.
FEMA Map Service Center www.msc.fema.gov No registration required to view maps.
FEMA Multi-Year Flood Hazard Identification Plan (MHIP): http://www.fema.gov/media-library/assets/documents/6907
FEMA Flood Hazard Mapping Page https://www.fema.gov/national-flood-insurance-program-flood-hazard-mapping
LOMA/LOMR Information: https://www.fema.gov/floodplain-management/letter-map-amendment-loma
Cooperating Technical Partners: https://www.fema.gov/cooperating-technical-partners-program
FEMA Flood Hazard Mapping Tutorials: https://www.fema.gov/online-tutorials