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<br />Guidelines and Specifications/or Flood Hazard Mapping Partners [Apri/21103] <br /> <br />For a more detailed discussion of FIRM base maps, see Appendix K of these Guidelines. <br /> <br />A.1.2 <br /> <br />Work Maps <br /> <br />[February 2002] <br /> <br />FIRM work maps are discussed in Volume I, Subsection 1.4.2.3, as part of the discussion of <br />requirements for flood hazard analyses performed as part of a Flood Map Project. <br /> <br />A.1.3 <br /> <br />Manual and Automated Analysis Procedures <br /> <br />[February 2002] <br /> <br />A distinction is made in this Appendix between manual and automated hydrologic and hydraulic <br />analysis procedures. Manual procedures rely on maps with contours for human interpretation and a <br />relatively small number of cross sections selected to be representative of average conditions in <br />reaches that are as long as possible without permitting excessive conveyance change between cross <br />sections. Automated procedures normally use high-density elevation points (in lieu of contours) <br />and computer generation of a potentially larger number of cross sections representative of shorter <br />reaches. <br /> <br />A-2 <br /> <br />Section A. J <br />