Federal Emergency Management Agency20070928FEMA-DFIRM-FinalWashington, DCFederal Emergency Management Agencyhttp://www.fema.gov/mscFederal Emergency Management AgencyUnknownThe Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). The file is georeferenced to earth's surface using the UTM projection and coordinate system. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:6,000.The FIRM is the basis for floodplain management, mitigation, and insurance activities for the National Flood Insurance Program (NFIP). Insurance applications include enforcement of the mandatory purchase requirement of the Flood Disaster Protection Act, which "... requires the purchase of flood insurance by property owners who are being assisted by Federal programs or by Federally supervised, regulated or insured agencies or institutions in the acquisition or improvement of land facilities located or to be located in identified areas having special flood hazards," Section 2 (b) (4) of the Flood Disaster Protection Act of 1973. In addition to the identification of Special Flood Hazard Areas (SFHAs), the risk zones shown on the FIRMs are the basis for the establishment of premium rates for flood coverage offered through the NFIP. The DFIRM Database presents the flood risk information depicted on the FIRM in a digital format suitable for use in electronic mapping applications. The DFIRM database is a subset of the Digital FIS database that serves to archive the information collected during the FIS.20070928FIRM and FIS Effective DateCompleteUnknown-81.14-80.3539.2038.34ISO 19115 Topic CategoryhydrologyenvironmentinlandWatersstructuretransportationelevationFEMA NFIP Topic CategoryDFIRMFIRMFEMA Flood Hazard ZoneDFIRM DatabaseSpecial Flood Hazard AreaDigital Flood Insurance Rate MapCBRSCoastal Barrier Resources SystemRiverine FloodingCoastal FloodingNFIPBase Flood ElevationSFHAFlood Insurance Rate MapFloodwayNoneREGION 3STATE WVCOUNTY BRAXTONCOUNTY-FIPS 007COMMUNITY BRAXTON County (all jurisdictions)FEMA-CID 54007CNoneThe hardcopy FIRM and DFIRM and the accompanying FISs are the official designation of SFHAs and Base Flood Elevations (BFEs) for the NFIP. For the purposes of the NFIP, changes to the flood risk information published by FEMA may only be performed by FEMA and through the mechanisms established in the NFIP regulations (44 CFR Parts 59-78). These digital data are produced in conjunction with the hardcopy FIRMs and generally match the hardcopy map exactly. However the hardcopy flood maps and flood profiles are the authoritative documents for the NFIP. Acknowledgement of FEMA would be appreciated in products derived from these data.Federal Emergency Management Agencymailing address

500 C Street, S.W.

WashingtonDistrict of Columbia20472USA1-800-358-9616http://www.fema.gov/mscFederal Emergency Management Agency20070928mapWashington, DCFederal Emergency Management Agencyhttp://www.fema.gov/mscFederal Emergency Management Agency20070928documentWashington, DCFederal Emergency Management Agencyhttp://www.fema.gov/mscFederal Emergency Management Agency20070928raster digital dataWashington, DCFederal Emergency Management Agencyhttp://www.fema.gov/mscThe DFIRM Database consists of community based vector files and associated attributes produced in conjunction with the hard copy FEMA FIRM. The published effective FIRM and DFIRM maps are issued as the official designation of the SFHAs. As such they are adopted by local communities and form the basis for administration of the NFIP. For these purposes they are authoritative. Provisions exist in the regulations for public review, appeals and corrections of the flood risk information shown to better match real world conditions. As with any engineering analysis of this type, variation from the estimated flood heights and floodplain boundaries is possible. Details of FEMA's requirements for the FISs and flood mapping process that produces these data are available in the Guidelines and Specifications for Flood Hazard Mapping Partners. Attribute accuracy was tested by manual comparison of source graphics with hardcopy plots and a symbolized display on an interactive computer graphic system. Independent quality control testing of FEMA's DFIRM database was also performed. To obtain more detailed information in areas where Base Flood Elevations (BFEs) and/or floodways have been determined, users are encouraged to consult the Flood Profiles and Floodway Data and/or Summary of Stillwater Elevations tables contained within the FIS report that accompanies this DFIRM database. Users should be aware that BFEs shown in the S_BFE table represent rounded whole-foot elevations. These BFEs are intended for flood insurance rating purposes only and should not be used as the sole source of flood elevation information. Accordingly, flood elevation data presented in the FIS report must be used in conjunction with the FIRM for purposes of construction and/or floodplain management. The 1-percent-annual-chance water-surface elevations shown in the S_XS table match the regulatory elevations shown in the FIS report.When FEMA revises an FIS, adjacent studies are checked to ensure agreement between flood elevations at the boundaries. Likewise flood elevations at the confluence of streams studied independently are checked to ensure agreement at the confluence. The FIRM and the FIS are developed together and care is taken to ensure that the elevations and other features shown on the flood profiles in the FIS agree with the information shown on the FIRM. However, the elevations as shown on the FIRM are rounded whole-foot elevations. They must be shown so that a profile recreated from the elevations on the FIRM will match the FIS profiles within one half of one foot.Data contained in the DFIRM Database files reflect the content of the source materials. Features may have been eliminated or generalized on the source graphic, due to scale and legibility constraints. With new mapping, FEMA plans to maintain full detail in the spatial data it produces. However, older information is often transferred from existing maps where some generalization has taken place. Flood risk data are developed for communities participating in the NFIP for use in insurance rating and for floodplain management. Flood hazard areas are determined using statistical analyses of records of river flow, storm tides, and rainfall; information obtained through consultation with the communities; floodplain topographic surveys; and hydrological and hydraulic analysis. Both detailed and approximate analyses are employed. Generally, detailed analyses are used to generate flood risk data only for developed or developing areas of communities. For areas where little or no development is expected to occur, FEMA uses approximate analyses to generate flood risk data. Typically, only drainage areas that are greater than one square mile are studied.The DFIRM Database consists of community based vector files and associated attributes produced in conjunction with the hardcopy FEMA FIRM. The published effective FIRM and DFIRM are issued as the official designation of the SFHAs. As such they are adopted by local communities and form the basis for administration of the NFIP. For these purposes they are authoritative. Provisions exist in the regulations for public review, appeals and corrections of the flood risk information shown to better match real world conditions. As with any engineering analysis of this type, variation from the estimated flood heights and floodplain boundaries is possible. Details of FEMA's requirements for the FISs and flood mapping process that produces these data are available in the Guidelines and Specifications for Flood Hazard Mapping Partners. Horizontal accuracy was tested by manual comparison of source graphics with hardcopy plots and a symbolized display on an interactive computer graphic system. Independent quality control testing of FEMA's DFIRM database was also performed.The DFIRM Database consists of community based vector files and associated attributes produced in conjunction with the hardcopy FEMA FIRM. The published effective FIRM and DFIRM maps are issued as the official designation of the SFHAs. As such they are adopted by local communities and form the basis for administration of the NFIP. For these purposes they are authoritative. Provisions exist in the regulations for public review, appeals and corrections of the flood risk information shown to better match real world conditions. As with any engineering analysis of this type, variation from the estimated flood heights and floodplain boundaries is possible. Details of FEMA's requirements for the FISs and flood mapping process that produces these data are available in the Guidelines and Specifications for Flood Hazard Mapping Partners. Vertical accuracy was tested by manual comparison of source graphics with hardcopy plots and a symbolized display on an interactive computer graphic system. Independent quality control testing of FEMA's DFIRM database was also performed.National Geodetic Survey2007Geodetic data comprise the results of geodetic surveys to determine among other things, latitude, longitude, height, scale, and orientation control. The NGS? final product is the geodetic data sheet. Geodetic data sheets are comprehensive summaries of all the published information for a given geodetic reference point, including: the geographic position and/or height based on the current reference datum, condition of the survey mark when it was last visited, a description of where the point is located and how to reach it, and an explanation of the terms used in the data sheet.digital vector data2007Ground ConditionsBASE1Spatial and attribute information for permanent benchmarks.West Virginia GIS Technical Center20061207This data was collected from the WVGIS Center enhanced hydrologic data set.digital vector data2003Ground ConditionsBASE2Spatial and attribute information for water line features.U.S. Geological Survey (USGS)2002Data obtained from USGS national Atlas downloaded on 20020401.digital vector data20020401Publication DateBASE3s_pol_ln and s_pol_arU.S. Geological Survey (USGS), West Virginia Statewide Addressing and Mapping Board (WVSAMB), West Virginia University GIS Technical Center2005Orthophoto aerial imagery used as base layer for DFIRM product.raster digital data20030310publication dateBASE4Base layer for DFIRM maps.U.S. Geological Survey1989USGS has mapped the county with 1:24,000 scale topographic maps (also referred to as 7.5-minute quadrangles).digital vector data1989Publication DateBASE5spatial and attribute information for USGS 7.5-MINUTE QUADRANGLE GRID/INDEX (S_Quad_Index).Federal Emergency Management Agency19910318paper19910318FIS Effective DateFIS1Spatial and attribute information for Base Flood Elevations (BFEs) and floodway widths.Federal Emergency Management Agency19910318paper19910318FIRM Effective DateFIRM1Spatial and attribute information for Base Flood Elevations (BFEs) and floodway widths.U.S. Army Corps of Engineers, Huntington District20070928Work performed specifically for this DFIRM conversions.digital vector data2007Publication DateSTUDY1spatial and attribute information for DFIRM FIRM PANEL LAYOUT (S_FIRM_PAN).The DFIRM Database is compiled in conjunction with the hardcopy FIRM and the final FIS report. The specifics of the hydrologic and hydraulic analyses performed are detailed in the FIS report. The results of these studies are submitted in digital format to FEMA. These data and unrevised data from effective FIRMs are compiled onto the base map used for DFIRM publication and checked for accuracy and compliance with FEMA standards.20070928Universal Transverse Mercator170.9996-81.00.05000000.0coordinate pair0.0610.061metersNorth American Datum of 1983Geodetic Reference System 806378137.0298.257222North American Vertical Datum of 19880.000001feetExplicit elevation coordinate included with horizontal coordinatesS_Base_IndexLocation and attributes for a tiling index for raster data used for the DFIRMFEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing Draft Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm)S_BFELocation and attributes for base flood elevations lines shown on DFIRMFEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing Draft Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm)S_FIRM_PanLocation and attributes for DFIRM hardcopy map panelsFEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing Draft Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm)S_Fld_Haz_ArLocation and attributes flood insurance risk zones on the DFIRMFEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing Draft Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm)S_Fld_Haz_LnLocation and attributes for boundaries of flood insurance risk zones on the DFIRMFEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing Draft Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm)S_Gen_StructLocation and attributes for flood control structures shown on the DFIRMFEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing Draft Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm)S_Label_LdLocation and attributes for leader lines on transportation and hydrography labels shown on the DFIRMFEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing Draft Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm)S_Label_PtLocation and attributes for transportation and hydrography labels shown on the DFIRMFEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing Draft Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm)S_LOMRLocation and attributes for LOMRs on the DFIRMFEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing Draft Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm)S_Perm_BmkLocation and attributes for bench marks on the DFIRMFEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing Draft Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm)S_Pol_ArLocation and attributes for political jurisdictions shown on the DFIRMFEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing Draft Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm)S_Pol_LnLocation and attributes for political boundaries shown on the DFIRMFEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing Draft Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm)S_Quad_IndexLocation and attributes for USGS quadrangle maps covering the DFIRM area.FEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing Draft Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm)S_Riv_MrkLocation and attributes for river mile markers shown on the DFIRMFEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing Draft Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm)S_Wtr_LnLocation and attributes for hydrography features shown on DFIRMFEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing Draft Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm)The DFIRM Database is made up of several data themes containing both spatial and attribute information. These data together represent the current flood risk for the subject area as identified by FEMA. The attribute tables include SFHA locations, flood zone designations, BFEs, political entities, cross-section locations, FIRM panel information, and other data related to the NFIP.Appendix L of FEMA Guidelines and Specifications for FEMA Flood Hazard Mapping Partners contains a detailed description of each attribute code and a reference to other relevant information.The following tables are included in this data set: l_comm_info l_stn_start study_info s_bfe s_firm_pan s_fld_haz_ar s_fld_haz_ln s_gen_struct s_perm_bmk s_pol_ar s_pol_ln s_quad_index s_wtr_lnFEMA, Map Service Centermailing address

P.O. Box 1038

JessupMaryland20794-1038USA1-800-358-9616http://www.fema.gov/mscData requests must include the full name of the community or county and the FIRM panel number(s) or the 7.5- minute series quadrangle sheet area(s) covered by the request.No warranty expressed or implied is made by FEMA regarding the utility of the data on any other system nor shall the act of distribution constitute any such warranty. FEMA will warrant the delivery of this product in a computer-readable format, and will offer appropriate adjustment of credit when the product is determined unreadable by correctly adjusted computer input peripherals, or when the physical medium is delivered in damaged condition. Requests for adjustment of credit must be made within 90 days from the date of this shipment from the ordering site.ARCEhttp://www.fema.gov/mscESRI Shapefilehttp://www.fema.gov/mscMapInfo Interchange file (MIF)http://www.fema.gov/mscARCECD-ROMISO 9660ESRI ShapefileCD-ROMISO 9660MapInfo Interchange file (MIF)CD-ROMISO 9660Contact Distributor20070928Ms. Nikki RobertsFEMA, Region IIIProject Officermailing address

615 Chestnut Street

PhiladelphiaPA19106-4404USA1-215-931-5575Nikki.Roberts@dhs.govFGDC Content Standards for Digital Geospatial MetadataFGDC-STD-001-1998http://hazards.fema.govhttp://www.epsg.orgFEMA NFIP Metadata Content and Format Standard