List of Acronyms and Abbreviations The following acronyms and abbreviations will be encountered by the Federal Emergency Management Agency (FEMA) and its Flood Hazard Mapping Partners throughout these Guidelines and in the completion of activities as part of the Flood Hazard Mapping Program: A AML ARC Macro Language AAER Average Annual Erosion Rate ACSM American Congress of Surveying and Mapping ANI Area Not Included AO (FEMA) Assistance Officer ASC Area of Special Consideration ASCE American Society of Civil Engineers ASCII American Standard Code for Information Interchange ASFPM Association of State Floodplain Managers ASPRS American Society of Photogrammetry and Remote Sensing B BERD Blocked Erosion Rate Database BFE Base Flood Elevation BIL Band Interleaved by Line (Format) BM Bench Mark BSQ Band Sequential Format BU Building (Line) C CAC Community Assistance Call CAD Computer-Assisted Drafting CAV Community Assistance Visits CADD Computer-Assisted Drafting and Design CBN Cooperative Base Network CBRA Coastal Barrier Resources Act (of 1982) CBRS Coastal Barrier Resources System CCO Consultation Coordination Officer CD-ROM Compact Disk Read-Only Memory CEO Chief Executive Officer CFR Code of Federal Regulations CID Community Identification (Number) CIS Community Information System CLOMA Conditional Letter of Map Amendment CLOMR Conditional Letter of Map Revision CLOMR-F Conditional Letter of Map Revision Based on Fill CMA Community Map Action (Form) CMAS Circular Map Accuracy Standard CO Contracting Officer COGO Coordinate Geometry CORS Continuously Operating Reference Stations CRS Community Rating System CSIS Credited Structures Inventory System CTP Cooperating Technical Partners (Initiative) D DBMS Database Management System DEM Digital Elevation Model DFIRM Digital Flood Insurance Rate Map DFO Disaster Field Office DGN Design (File) DGPS Differential Global Positioning System DLG Digital Line Graph DLG-3 Digital Line Graph Level 3 DMRS Data Management and Retrieval System DOI U.S. Department of the Interior DOQ Digital Orthophoto Quadrangle DTM Digital Terrain Model DU Dune (Line) DWG Drawing (File) DXF Drawing Exchange (Interchange) File E EDR External Data Request EO Exterior Orientation (Parameter) EPA U.S. Environmental Protection Agency ERM Elevation Reference Mark ERP Elevation Reference Point ESDP Engineering Study Data Package ESDPF Engineering Study Data Package Facility ESF Emergency Support Function EST Emergency Support Team ET End-of-Transect (Line) ETJ Extraterritorial Jurisdiction (limits) F FAAT Fully Analytical Aerial Triangulation FBFM Flood Boundary and Floodway Map FDN Federal Base Network FCSA Fee-Charge System Administrator FEDD Flood Elevation Determination Docket FEMA Federal Emergency Management Agency FGCC Federal Geodetic Coordinating Committee FGDC Federal Geographic Data Committee FHAR Flood Hazard Analyses Report FHBM Flood Hazard Boundary Map FIMA Federal Insurance and Mitigation Administration (FEMA) FIPS Federal Information and Processing Standards (Code) FIRM Flood Insurance Rate Map FIRM-DLG Flood Insurance Rate Map-Digital Line Graph FIS Flood Insurance Study FOIA Freedom of Information Act FPI Floodplain Information Report FTP File Transfer Protocol G GeoTIFF Georeferenced Tagged Image File Format GIS Geographic Information System GLWRM (FEMA) Great Lakes Wave Runup Model GPO U.S. Government Printing Office GPS Global Positioning System GRASS Geographic Resources Analysis and Support System GRS Geodetic Reference System H HARN High Accuracy Reference Network HEC Hydrologic Engineering Center (U.S. Army Corps of Engineers) H&H Hydrologic and Hydraulic (Analyses) HMGP Hazard Mitigation Grant Program HQ Headquarters (FEMA) HS Human Services (applications) HSLD Historic Shoreline Location Database HSPCD Historic Shoreline Positional Change Database HWL High Water Line I IE Initial Elevation (Line) IF Inland Fetch (Line) ILGD85 International Great Lakes Datum of 1985 IMU Inertial Measurement Unit INS Inertial Navigation System L LAG Lowest Adjacent Grade LAN Local Area Network LFD Letter of Final Determination LFFE Lowest Finished Flood Elevation LIDAR LIght Detection and Ranging (System) LIDEF Levee Inventory Data Entry Form LMMP Limited Map Maintenance Program Project Revision LODR Letter of Determination Review LOMA Letter of Map Amendment LOMC Letter of Map Change LOMC-VALID Letter of Map Change Revalidation (Letter) LOMR Letter of Map Revision LOMR-F Letter of Map Revision Based on Fill M MAS Mapping Activity Statement MCC Flood Map Production Coordination Contractor MG Marsh Vegetation (Line) MHWL Mean High Water Line MICS Monitoring Information on Contracted Studies (System) MIS Management Information System MNAP Mapping Needs Assessment Process MNUSS Map Needs Update Support System MOA Memorandum of Agreement mph Miles per Hour MRR Measurement Residual Ratio MSC Map Service Center (FEMA) N NAD27 North American Datum of 1927 NAD83 North American Datum of 1983 NAVD88 North American Vertical Datum of 1988 NASA National Aeronautic and Space Administration NCSSA National Cartographic Standards for Spatial Accuracy NFIF National Flood Insurance Fund NFIP National Flood Insurance Program NFIRA National Flood Insurance Reform Act of 1994 NGVD29 National Geodetic Vertical Datum of 1929 NGRS National Geodetic Reference System NGS National Geodetic Survey NMAS National Map Accuracy Standard NOAA National Oceanic and Atmospheric Administration NOS National Ocean Survey NP Navigation Processor NRC National Research Council NRCS Natural Resources Conservation Service NSRS National Spatial Reference System NSSDA National Standard for Spatial Data Accuracy NWS National Weather Service O ODC Other Direct Cost OF Over-water Fetch (Line) OGC Office of General Counsel OPA Otherwise Protected Area P pdf Portable Document Format PDF Probability Density Function PDOP Position Dilution of Precision PE Professional Engineer PLSS U.S. Public Land Survey System PMR Physical Map Revision PO Project Officer (FEMA HQ) Q QA Quality Assurance QC Quality Control QA/QC Quality Assurance/Quality Control R RDBMS Relational Database Management System RFIS Flood Insurance Restudy RLE Run Length Encoding RLS Registered Land Surveyor RMM River Mile Marker RMS Root Mean Square RMSE Root Mean Square Error RO Regional Office (FEMA) ROC Regional Operations Center (FEMA) RPO Regional Project Officer (FEMA RO) RTK Real Time Kinematic RXDS Existing Data Restudy S SC Study Contractor SCRR Special Conversion Recommendation Report SDTS Spatial Data Transfer System SFHA Special Flood Hazard Area SIF Standard Interchange Format SOMA Summary of Map Actions SOS Status of Studies SOW Statement of Work SPR Special Problem Report SWEL Stillwater Flood Elevation SWFL Stillwater Flood Level T TBM Temporary Bench Mark TCS (Standard Flood Hazard) Tracking and Correspondence System TIGER Topologically Integrated Geographic Encoding and Reference (System) TIN Triangulated Irregular Network TSDN Technical Support Data Notebook TVA Tennessee Valley Authority U USACE U.S. Army Corps of Engineers USFWS U.S. Fish and Wildlife Service USGS U.S. Geological Survey USGS-DLG U.S. Geological Survey Digital Line Graph (Format) UTM Universal Transverse Mercator V VAX Virtual Address Extension VE Rigid Vegetation Line VMAS Vertical Map Accuracy Standard VMS Virtual Memory System VPS Vector Product Format W WAN Wide Area Network WORM Write Once Read Many (CD-ROM Drive) WSEL Water-Surface Elevation WWL Wind/Water Line X XDS Existing Data Study Guidelines and Specifications for Flood Hazard Mapping Partners Acronyms and Abbreviations ACRONYM-10 February 2002 Edition