Federal Emergency Management Agency20120605FEMA-DFIRM-FinalWashington, DCFederal Emergency Management Agencyhttp://www.fema.gov/mscFederal Emergency Management Agency20120605The 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 State Plane 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 1:12,000.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.20120605FIRM and FIS effective dateCompleteUnknown-80.0812-79.315439.795639.0612ISO 19115 Topic CategoryelevationenvironmenthydrologyinlandwatersstructuretransportationFEMA NFIP Topic CategoryBase Flood ElevationDFIRMDFIRM DatabaseDigital Flood Insurance Rate MapFEMA Flood Hazard ZoneFIRMFlood Insurance Rate MapFloodwayNFIPRiverine floodingSFHASpecial Flood Hazard AreaNoneREGION 03STATE WVCOUNTY PRESTONCOUNTY-FIPS 54077COMMUNITY PRESTON COUNTY And Incorporated AreasFEMA-CID 54077CNoneThe 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 matches 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

500 C Street, S.W.

WashingtonDistrict of Columbia20472USA1-800-358-9616miphelp@riskmapcds.comOriginal data development environment varies. Finishing of the data is done using ESRI's ArcGIS software.Federal Emergency Management Agency20120605DocumentWashington, DCFederal Emergency Management Agencyhttp://www.fema.gov/MSCFederal Emergency Management Agency20120605MapWashington, DCFederal Emergency Management Agencyhttp://www.fema.gov/MSCFederal Emergency Management Agency20120605Raster Digital DataWashington, DCFederal Emergency Management Agencyhttp://www.fema.gov/MSCThe DFIRM Database consists of countywide 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 countywide 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 countywide 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.West Virginia GIS Technical Center20030310Remote sensing imageDavis West VirginiaCanaan Valley InstituteFor DOQs from a panchromatic source each pixel contains an 8-bit gray-scale value between 0-255. A value of 0 represents the color black while a value of 255 represents the color white. All values between 0 and 255 are represented as a shade of gray varying from black to white. For color-infrared and natural color DOQs' a digital number from 0 to 255 will also be assigned to each pixel but that number will refer to a color look-up table which will contain the RGB red, blue and green RGB) values, each from 0 to 255, for that digital number. Areas where the rectification process is incomplete due to incomplete data (i.e., lack of elevation data, gaps), are represented with the numeric value of 0.12000On-line20030310Ground conditionsBASE3Location of roads, railroads, bridges, streams, and other physical features.Federal Emergency Management Agency20100925Map and reportWashington, D.C.Federal Emergency Management AgencyThe FIS and FIRM are the basis for floodplain management, mitigation, and insurance activities for the National Flood Insurance Program (NFIP). This DFIRM includes data previously published by FEMA in the following Flood Insurance Studies: Albright, Town of, WV, August 1, 1987, Brandonville, Town of, WV, Bruceton Mills, Town of, WV, August 1, 1987, Kingwood, City of, WV, September 3, 1976, Masontown, Town of, WV, Newburg, Town of, WV, August 1, 1987, Preston County, WV, March 1, 1987, Reedsville, Town of, WV, August 1, 1987, Rowlesburg, Town of, WV, August 1, 1987, Terra Alta, Town of, WV, August 1, 1987, Tunnelton, Town of, WV.12000Paper20100925FIS Effective datesFIS1Spatial and attribute information, floodplain widths, BFEs, cross-sections, general structures, water bodies, water features, political areas and floodplain locations.Federal Emergency Management Agency20120605Vector digital dataWashington, D.C.Federal Emergency Management AgencyGrid of FIRM panels created for this Flood Insurance Study.12000Digitized20120605Effective dateSTUDY1Grid of DFIRM panels.National Geodetic Survey20020101Vector digital dataSilver Spring, MDNational Geodetic SurveyThe National Geodetic Survey (NGS) serves as the Nation's depository for geodetic data in the National Spatial Reference System. These geodetic data include bench marks and other control points that provide the base of reference for latitude, longitude, height, scale, orientation, and gravity measurements used throughout the United States.24000On-line20120605Publication dateBASE1National Geodetic Survey reference points (bench marks).U.S. Geological Survey20021201Vector digital dataRedlands, CAESRIGrid of USGS 7.5-Minute Series Topographic Maps.24000On-line20021201Publication dateBASE2Grid of USGS 7.5-Minute Series Topographic Maps.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.BASE3FIS1STUDY1BASE1BASE220120605VectorPointStringGT-polygon composed of chainsState Plane Coordinate System 198347013940.25-79.538.519685000coordinate pair3.280833E-043.280833E-04FeetNorth American Datum of 1983Geodetic Reference System 806378137.0298.26North American Vertical Datum of 19880.03feetAttribute valuess_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 elevation 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 for 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 DFIRMLocation and attributes for leader lines on transportation and hydrography labels shown on the DFIRM 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_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_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_wtr_lnLocation and attributes for hydrography features 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_xsLocation and attributes for cross-section lines in the area covered by 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)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's 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_base_index s_firm_pan s_fld_haz_ar s_fld_haz_ln s_gen_struct s_label_pt s_label_ld s_perm_bmk s_pol_ar s_pol_ln s_quad_index s_wtr_ln s_xsFEMA, Map Service Centermailing

P.O. Box 1038

JessupMaryland20794-1038USA1-877-336-2627miphelp@riskmapcds.comData 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://hazards.fema.govESRI Shapefilehttp://hazards.fema.govMapInfo Interchange file (MIF)http://hazards.fema.govARCECD-ROMISO 9600MapInfo Interchange file (MIF)CD-ROMISO 9600ESRI ShapefileCD-ROMISO 9600Contact Distributor20101006MipHelpFederal Emergency Management Agencymailing

500 C Street, s.w.

WashingtonDistrict of Columbia20472USA1-877-336-2627miphelp@riskmapcds.comFGDC Content Standards for Digital Geospatial MetadataFGDC-STD-001-1998http://hazards.fema.govhttp://www.epsg.orgFEMA NFIP Metadata Content and Format Standard