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This table is required for any FIRM Database where cross sections are shown on the FIRM or where modeled cross sections were used to generate the special flood hazard area boundaries. Normally, any FIRM that has associated flood profiles has cross sections. The S_XS table contains information about cross section lines. This information is used in the Floodway Data Tables in the FIS Report, as well as on the FIRM panels. Database attributes should reflect the final regulatory water surface elevations that include any backwater elevations regardless of flood hazard zone and should be consistent with values in the floodway data tables and flood profiles, where applicable. 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