Federal Emergency Management Agency 20081214 FEMA-DFIRM-Preliminary Washington, DC Federal Emergency Management Agency http://www.fema.gov/msc Federal Emergency Management Agency 20090102 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). In addition to the preceding, required text, the Abstract should also describe the projection and coordinate system as well as a general statement about horizontal accuracy. 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. 20090102 preliminary date Complete Unknown -87.804343 -86.958906 36.695102 34.784541 ISO 19115 Topic Category hydrology environment inlandWaters structure transportation elevation FEMA NFIP Topic Category DFIRM FIRM FEMA Flood Hazard Zone DFIRM Database Special Flood Hazard Area Digital Flood Insurance Rate Map Riverine Flooding NFIP Base Flood Elevation SFHA Flood Insurance Rate Map Floodway None REGION 04 STATE TN COUNTY LAWRENCE COUNTY-FIPS 099 COMMUNITY LAWRENCE COUNTY UNINCORPORATED AREAS FEMA-CID 47099C COMMUNITY LAWRENCE COUNTY UNINCORPORATED AREAS FEMA-CID 470354 COMMUNITY LAWRENCEBURG FEMA-CID 475437 COMMUNITY ETHERIDGE FEMA-CID 470301 COMMUNITY IRON CITY FEMA-CID 470101 COMMUNITY ST JOSEPH FEMA-CID 470327 COMMUNITY LORETTO FEMA-CID 470306 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 http://www.fema.gov/msc Federal Emergency Management Agency 20070820 map Washington, DC Federal Emergency Management Agency http://www.fema.gov/msc Federal Emergency Management Agency 20070820 document Washington, DC Federal Emergency Management Agency http://www.fema.gov/msc Federal Emergency Management Agency 20070820 raster digital data Washington, DC Federal Emergency Management Agency http://www.fema.gov/msc The 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. Federal Emergency Management Agency 19881216 paper 19881216 19881216 FIS1 Spatial and attribute information, floodplain widths, cross sections, BFEs. Federal Emergency Management Agency 19881216 paper 19881216 publication date FIRM1 Spatial location and attribute information, floodplain widths and locations, cross sections, general structure locations, and rivermile markers. U.S. Geological Survey 1998 on-line Unknown ground condition BASE1 Spatial information for USGS quadrangles that intersect study area. National Geodetic Survey 20040101 online 20050722 publication date BASE2 Spatial location and attribute information for NGS benchmarks that are within the study area. U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners Unknown on line 99999999 publication date BASE3 Attribute information for hydrography features State of Tennessee Department of Transportation 2000 on line 2000 publication date BASE4 spatial location and attribute information for Lawrence County boundary State of Tennessee Department of Finance and Administration GIS Department 20060721 External hard drive 200607 ground condition BASE5 Spatial location information for transportation features. State of Tennessee Department of Finance and Administration GIS Department 20060329 External hard drive 200503 ground condition BASE6 Spatial location for water features. State of Tennessee Department of Finance and Administration GIS Department 20060329 on line 200503 publication date BASE7 spatial and attribute information for corporate boundaries. Watershed IV Alliance 19881216 paper 19881216 publication date STUDY1 Redelination on Beeler Fork Shoal Creek, Little Shoal Creek cross sections G through O, Tripp Town Branch and Big Dry Branch. United States Army Corp of Engineers (USACE) 20050830 The U.S. Army Corps of Engineers (USACE) Section 205 Flood Reduction Study for the city of Lawrenceburg, Tennessee was terminated in year 2004. The Hydrologic and Hydraulic (H & H) portion of this report includes documentation of H & H work performed and preparation of study results for submittal to FEMA for a flood insurance update. This study took several directions throughout its course. Lawrenceburg has both riverine flooding and local (nuisance) drainage problems. Riverine flooding was studied in detail by the Corps while local drainage problems were studied by a City contractor. The USACE Section 205 study included the development of GIS data and detailed hydrologic and hydraulic models for the Shoal Creek watershed upstream from the New Shoal Creek Dam located at river mile 51.7 along Shoal Creek. The mapping and modeling area include Shoal Creek, Little Shoal Creek and Crowson Creek within the corporate limits of Lawrenceburg. The models prepared extend outside of the corporate limits to include both the Old Shoal Creek Dam (RM 54.1) and the New Shoal Creek Dam (RM 51.7). The models were calibrated to observed streamflow data and high water marks. All bridges, pipe crossing and hydraulic structures were resurveyed for the study. Both Flood Frequency Analysis (HEC-FFA) and Regional Frequency Analysis (REGFRQ) were performed to revise flood frequency discharges. A HEC-1 model was developed for the Shoal Creek watershed and the levee interior drainage alternative. HEC-RAS hydraulic models were developed for 12 miles of stream including 8 miles on Shoal Creek, 2 miles on Little Shoal Creek and 2 miles on Crowson Creek. Hydraulic conditions in HEC-RAS include pre July 1998 conditions, existing conditions with new sewer crossings and Old Garner Mill Dam restored, and alternatives analysis. The areas inundated by a 100-year and 500-year frequency flood were delineated on a Triangulated Irregular Network (TIN) using the HEC-GeoRAS spatial modeling tools. The flooded areas were then overlaid onto digital orthographic photos of the City. Floodways are also overlain on the photos to allow a more defined demarcation of its boundary. Mapping data and digital orthographic photographs were procured that cover all major floodplains in the Shoal Creek watershed within the corporate limits of Lawrenceburg. The Ortho?s were produced at an accuracy of 0.5-foot pixel resolution. The ground surface data was recorded at accuracy sufficient to derive 2-foot or less contour lines. Breakline polylines were digitized for planimetrics, hydrography, and major breaks. A TIN was generated of the entire mapping area and the hydraulic modeling area. The Corps study mapping data and TINs are included with this submittal. For each stream studied, the floodplain boundaries were delineated using HEC-GeoRAS. Floodways were set to match effective floodways where possible. Where this was not possible, the basis of equal conveyance reduction from each side of the floodplain was used. The existing conditions modeling for 8 miles on Shoal Creek, 2 miles on Little Shoal Creek and 2 miles on Crowson Creek were included in the restudy and remapping effort performed by the Watershed IV Alliance. The floodplain delineations provided by the USACE were developed with better topographic information that were made available to Watershed IV Alliance from the State of Tennessee, and therefore, the 1- and 0.2-percent annual chance floodplains and the 1-percent annual chance floodway shown on the FIRM panels are those provided by the USACE to Watershed IV Alliance. paper 20050830 publication date STUDY2 spatial and attribute information for BFEs, special flood hazard areas, and cross sections. US Army Corp of Engineers (USACE) 20030701 This countywide FIS incorporates the determination of a Letter of Map Revision (LOMR): case number 03-04-179P, dated July 1, 2003 issued for the Buffalo River. The area was restudied using detailed methods from a point 2.8 miles downstream of State Route 240 to a point approximately 0.4 miles upstream of State Route 240. paper 20030701 publication date STUDY3 Spatial and attribute information for BFEs, special flood hazard areas, and cross sections. Watershed IV Alliance 20070820 For this countywide study, the hydrologic and hydraulic analyses for this study were performed by the Watershed IV Alliance, for the Federal Emergency Management Agency (FEMA), under Contract No. EMA-2002-CO-0011A, Project Order No. 013. This preliminary study was completed in June 2007. For this countywide study, approximate analyses were used to study those areas outside the corporate limit of the Town of Lawrenceburg. The scope and methods of study were proposed to, and agreed upon, by FEMA and Lawrence County. Cross section geometries for revised approximate models were obtained from a digital terrain data provided by the State of Tennessee. All streams shown as inundated by Special Flood Hazard Areas and depicted as Zone A flooding have been restudied by Watershed IV Alliance during this countywide restudy effort. paper 20070820 publication date STUDY4 Spatial and attribute information for special flood hazard areas in new zone A areas, and all unlettered cross section locations. 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. FIS1 FIRM1 BASE1 BASE2 BASE3 BASE4 BASE5 BASE6 BASE7 STUDY1 STUDY2 STUDY3 STUDY4 20070820 State Plane Coordinate System 1983 4100 35.25 36.4166667 -86.000000 34.333333 1968500.00000 0.0 coordinate pair .304801 .304801 survey feet North American Datum of 1983 Geodetic Reference System 80 6378137 298.25 North American Vertical Datum of 1988 10 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 Draft 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 Draft 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 Draft 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 Draft Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm) S_Gen_Struct Location and attributes for DFIRM hardcopy map panels 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/plan/prevent/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 Draft 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 Draft 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 Draft 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 Draft 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 Draft 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 Draft Digital Data and DFIRM Databases (available at http://www.fema.gov/fhm/dl_cgs.shtm) S_Riv_MrK Location and attributes for river mile markers 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_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 Draft 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 Draft 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 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_Stn_Start L_Comm_Info S_BFE S_FIRM_Pan S_Fld_Haz_Ar S_Fld_Haz_Ln S_Gen_Struct S_Label_Ld S_Label_Pt S_Perm_Bmk S_Pol_Ar S_Pol_Ln S_Quad_Index S_Riv_Mrk S_Trnsport_Ln S_Wtr_Ln S_XS Study_Info NP values were used in tables where attribute information was not provided State of Tennessee Department of Finance and Administration GIS Department Dennis Pederson Director of GIS Services mailing and physical address

312 8th Ave. North Suite 1600

Nashville TN 37243 USA 615-741-1534 dennis.pederson@state.tn.us 8am - 4pm Contact State of Tennessee Department of Finance and Administration GIS Department See point of contact ARCE http://gis.state.tn.us/mapping.html ESRI Shapefile http://www.fema.gov/msc MapInfo Interchange file (MIF) http://www.fema.gov/msc ARCE CD-ROM ISO 9660 ESRI Shapefile CD-ROM ISO 9660 MapInfo Interchange file (MIF) CD-ROM ISO 9660 Contact Distributor 20060522 Ranko Pudar Watershed IV Alliance Project Manager mailing address

400 Northpark Town Center 1000 Abernathy Road NE Suite 900

Atlanta Georgia 30328 USA 1-678-808-8800 ranko_pudar@urscorp.com 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