Federal Emergency Management Agency 20070802 FEMA-DFIRM-Final Washington, DC Federal Emergency Management Agency http://www.msc.fema.gov/ Federal Emergency Management Agency Unknown The 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 1:12,000. 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. 20080926 FIRM and FIS effective date Complete Irregular -86.26 -85.29 36.06 35.32 ISO 19115 Topic Category hydrology environment inlandWaters structure transportation elevation FEMA NFIP Topic Category FEMA Flood Hazard Zone DFIRM Database DFIRM Special Flood Hazard Area Digital Flood Insurance Rate Map NFIP Base Flood Elevation SFHA Flood Insurance Rate Map FIRM None REGION 04 STATE TN COUNTY Warren COUNTY-FIPS 177 COMMUNITY Warren County FEMA-CID 47177C None The 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 Agency mailing address

500 C Street, S.W.

Washington District of Columbia 20472 USA 1-800-358-9616 www.msc.fema.gov/ Federal Emergency Management Agency 20041216 map Washington, DC Federal Emergency Management Agency http://www.fema.gov/msc Federal Emergency Management Agency 20070928 document Washington, DC Federal Emergency Management Agency http://www.fema.gov/msc Federal Emergency Management Agency 20041216 raster digital data Washington, DC Federal Emergency Management Agency http://www.fema.gov/msc The 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. Federal Emergency Management Agency 2004 paper 20021121 Effective Date FIS1 Spatial and attribute information for political entities, cross sections, floodplain information, BFEs, station start descriptions, general structures, coastal transects, and some feature names. Federal Emergency Management Agency 2004 Paper 20041216 FIS Effective dates FIS2 Spatial and attribute information, floodplain widths, BFEs, floodplain location. Federal Emergency Management Agency 1998 paper 19980701 Effective Date FIS3 Spatial and attribute information, floodplain widths, BFEs, floodplain location. Town of Warren County, Tennessee and incorporated areas. 20041216 CD-ROM 20041216 ground conditions BASE1 Location of corporate and County boundaries,Warren County digital corporate limits Warren County GIS Department 20020601 CD-ROM 20020601 Publication date BASE2 Location of roads, railroads, bridges, streams and other physical features shown. U.S. Geological Survey 1994 CD-ROM 20041216 ground conditions BASE3 Location of roads, railroads, bridges, streams and other physical features shown. 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. 20080926 Dataset copied.W:\Warren_TN\DFIRM\Final_Submittal\Submittal10\47177C_20080926_metadata2008031710472200 State Plane Coordinate System 1983 4100 35.250000 36.416667 0.0 34.333333 1968500.000000 0.0 coordinate pair 0.000537 0.000537 feet North American Datum 1983 Geodetic Reference System 80 6378137.000000 298.257222 North American Vertical Datum 1988 0.03 feet Attribute values S_BFE Location and attributes for base flood elevations lines shown on DFIRM FEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing preliminary Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm) S_FIRM_Pan Location and attributes for DFIRM hardcopy map panels FEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing preliminary Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm) S_Fld_Haz_Ar Location and attributes flood insurance risk zones on the DFIRM FEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing preliminary Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm) S_Fld_Haz_Ln Location and attributes for boundaries of flood insurance risk zones on the DFIRM FEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing preliminary Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm) S_Gen_Struct Location and attributes for flood control structures shown on the DFIRM FEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing preliminary Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm) S_Label_Ld Location 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 preliminary Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm) S_Label_Pt Location and attributes for transportation and hydrography labels shown on the DFIRM FEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing preliminary Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm) S_Perm_Bmk Location and attributes for bench marks on the DFIRM FEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing preliminary Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm) S_Pol_Ar Location and attributes for political jurisdictions shown on the DFIRM FEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing preliminary Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm) S_Pol_Ln Location and attributes for political boundaries shown on the DFIRM FEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing preliminary Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm) S_Quad_Index Location and attributes for USGS quadrangle maps covering the DFIRM area. FEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing preliminary Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm) S_Trnsport_Ln Location and attributes for roads, railroads and other transportation features shown on the DFIRM FEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing preliminary Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm) S_Wtr_Ln Location and attributes for hydrography features shown on DFIRM FEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing preliminary Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm) S_XS Location and attributes for cross-section lines in the area covered by the DFIRM FEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix L: Guidance for Preparing preliminary 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_Stn_Start S_BFE S_FIRM_Pan S_Fld_Haz_Ar S_Fld_Haz_Ln S_Gen_Struct S_Label_Pt S_Perm_Bmk S_Pol_Ar S_Pol_Ln S_Quad_Index S_Wtr_Ln S_XS FEMA, Map Service Center mailing address

P.O. Box 1038

Jessup Maryland 20794-1038 USA 1-800-358-9616 www.msc.fema.gov/ Data 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. ESRI Shapefile 1 CD-ROM ISO 9660 MapInfo Interchange file (MIF) 1 CD-ROM ISO 9660 ARCE 1 CD-ROM ISO 9660 Contact Distributor 20041119 Mohammad Waliullah Federal Emergency Management Agency Region IV Engineer mailing address

500 C Street, S.W.

Washington District of Columbia 20472 USA 1-800-358-9616 www.msc.fema.gov/ FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 http://hazards.fema.gov http://www.epsg.org FEMA NFIP Metadata Content and Format Standard {48BB6FA1-577B-4050-8D1F-B9A975BBFFDB}2008031710472100TRUEfile://\\Gtb2\Water\Warren_TN\DFIRM\Final_Submittal\Submittal11\47177C_20080926_metadataLocal Area Network