"Q3 Flood Data are developed by digitizing existing hardcopy Flood Insurance Rate Maps (FIRMs) to create a thematic overlay of flood risks. This product is generally produced in a countywide format. Q3 Flood Data files contain only certain features from the existing hardcopy maps. Q3 Flood Data do not replace the existing hardcopy maps. They are designed to support planning activities, some Community Rating System (CRS) activities, insurance marketing, mortgage portfolio review, FEMA's Response and Recovery activities, and to assist in floodplain management activities at a local level. Base Flood Elevations are not included so its use is limited. Q3 Flood Data do not include a base map, are not used to produce a new version of the hardcopy FIRM, and are not reviewed by communities. They are for use with desk-top mapping and Geographic Information Systems technology". (FEMA, FAQs: Digital Flood Data and Mapping, 2007)