Appendix L - Federal Emergency Management Agency

Appendix LDate Affected Section(s) Summary of ChangeApril 2003 L.2.5.10 Enhanced discussion of Null values for various data types.Added discussion of “Not Populated” values for situations wheredata does not follow requirements of specification.April 2003 L.2.5.10 Added discussion of true/false fields in the DFIRM Database.April 2003 L.2.5.10 Corrected typographic errors.April 2003 L.2.6 Corrected section cross-references.April 2003 L.2.6 Corrected typographic error.April 2003 L.2.7 Clarified that metadata file is provided in ASCII text format.April 2003 L.2.7.2 Corrected section cross-references.April 2003 L.2.7.2 Corrected typographic error.April 2003 L.2.7.2 Added SID and PNG as acceptable raster formats.April 2003 Purpose Clarified that the FEMA Project Officer assigns tasks to themapping partner(s).April 2003 L.1 Corrected typographic errors.April 2003 L.1 Expanded the description of the Standard and Enhanced DFIRMDatabases.April 2003 L.1 Rearranged table L-1 alphabetically.April 2003 L.1 Removed L_Riv_Model from table L-1.April 2003 L.1 Removed duplicate L_Stn_Start from table L-1.April 2003 L.1 Added the Enhanced DFIRM Database tables to table L-1.April 2003 L.1 Removed L_Cst_Model from table L-2.April 2003 L.1 Removed L_Riv_Model from table L-2.April 2003 L.1 Added the Enhanced DFIRM Database tables to table L-2.April 2003 L.1 Added a discussion on Database Design Decisions.April 2003 L.1.2 Expanded the discussion on what option mapping partnersshould follow for their submission.April 2003 L.1.2 Corrected section cross-references.April 2003 L.1.2 Clarified that mapping partners submitting Draft digital datamay use either Preliminary and Final DFIRM Data structure orDraft Digital Data structure.April 2003 L.1.2 Corrected typographic errors.April 2003 L.2.1 Corrected typographic error.April 2003 L.2.7.2 Changed references to orthophotos to the less restrictivedescription of raster base maps.April 2003 L.2.7.2 Modified the data directory structure.April 2003 L.2.8 Corrected typographic error.April 2003 L.2.8 Corrected structure of metadata file name.April 2003 L.3.2.1 Corrected typographic error.April 2003 L.3.2.1 Corrected section cross-references.April 2003 L.3.5 Corrected section cross-references.April 2003 L.3.5.1 Clarified discussion of Tiling.April 2003 L.3.5.2 Clarified discussion of nodes and vertices for Topology.April 2003 L.3.5.3 Corrected section cross-references.April 2003 L.3.5.4 Corrected section cross-references.April 2003 L.3.5.5 Corrected section cross-references.April 2003 L.3.5.6 Clarified that issues will be resolved the FEMA Project Officer.April 2003 L.3.5.7 Corrected section cross-references.April 2003 L.3.5.8 Added PLSS tables to base map tables that need not follow theDFIRM structure if existing data are used. Clarified the tables towhich this exception applies.April 2003 L.3.5.8 Modified discussion to explain the relationship between thebase map to the flood hazard data.April 2003 L.3.5.8 Removed the flood hazard data tables from Table L-7.Guidelines and Standards forFlood Risk Analysis and Mapping Page iii Table of Revisions