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snippet: Normally, any FIRM that has associated flood profiles has cross sections. The S_XS table contains information about cross section lines. These lines usually represent the locations of channel surveys performed for input into the hydraulic model used to calculate flood elevations. Sometimes cross sections are interpolated between surveyed cross sections using high accuracy elevation data. Depending on the zone designation (Zone AE, Zone A, etc.), these locations may be shown on Flood Profiles in the FIS report and can be used to cross reference the Flood Profiles to the planimetric depiction of the flood hazards. This information is used in the Floodway Data Tables in the FIS report, as well as on the FIRM panels. This is a subset filtered for the City of Independence Missouri and surrounding region.
summary: Normally, any FIRM that has associated flood profiles has cross sections. The S_XS table contains information about cross section lines. These lines usually represent the locations of channel surveys performed for input into the hydraulic model used to calculate flood elevations. Sometimes cross sections are interpolated between surveyed cross sections using high accuracy elevation data. Depending on the zone designation (Zone AE, Zone A, etc.), these locations may be shown on Flood Profiles in the FIS report and can be used to cross reference the Flood Profiles to the planimetric depiction of the flood hazards. This information is used in the Floodway Data Tables in the FIS report, as well as on the FIRM panels. This is a subset filtered for the City of Independence Missouri and surrounding region.
accessInformation: Source: Federal Emergency Management Agency Use Constraints: This data is for informational purposes and should not be used for legal, engineering, or surveying purposes. Users should verify all data with official FEMA products and coordinate with local floodplain administrators.
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description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Normally, any FIRM that has associated flood profiles has cross sections. The S_XS table contains information about cross section lines. These lines usually represent the locations of channel surveys performed for input into the hydraulic model used to calculate flood elevations. Sometimes cross sections are interpolated between surveyed cross sections using high accuracy elevation data. Depending on the zone designation (Zone AE, Zone A, etc.), these locations may be shown on Flood Profiles in the FIS report and can be used to cross reference the Flood Profiles to the planimetric depiction of the flood hazards. This information is used in the Floodway Data Tables in the FIS report, as well as on the FIRM panels. This is a subset filtered for the City of Independence Missouri and surrounding region. </SPAN></P><P><SPAN STYLE="font-weight:bold;">Fields and Descriptions:</SPAN></P><P><SPAN STYLE="font-weight:bold;">Field Name Alias Description</SPAN></P><P><SPAN>OBJECTID OBJECTID Internal feature ID</SPAN></P><P><SPAN>DFIRM_ID DFIRM_ID Unique ID for the Digital FIRM version</SPAN></P><P><SPAN>VERSION_ID VERSION_ID Version of the flood hazard dataset</SPAN></P><P><SPAN>XS_LN_ID XS_LN_ID Unique identifier for each cross section line</SPAN></P><P><SPAN>WTR_NM WTR_NM Water body name (e.g., stream or river)</SPAN></P><P><SPAN>STREAM_STN STREAM_STN Distance upstream along the stream (stationing)</SPAN></P><P><SPAN>START_ID START_ID Starting ID point for the cross section</SPAN></P><P><SPAN>XS_LTR XS_LTR Letter label shown on FIRMs for cross section (e.g., A, B)</SPAN></P><P><SPAN>XS_LN_TYP XS_LN_TYP Type of cross section (Regulatory, Non-regulatory)</SPAN></P><P><SPAN>WSEL_REG WSEL_REG Water Surface Elevation used for regulatory purposes</SPAN></P><P><SPAN>STRMBED_EL STRMBED_EL Elevation of the streambed at the cross section</SPAN></P><P><SPAN>LEN_UNIT LEN_UNIT Units of measurement (e.g., Feet, Meters)</SPAN></P><P><SPAN>V_DATUM V_DATUM Vertical datum (e.g., NAVD88) used for elevation references</SPAN></P><P><SPAN>PROFXS_TXT PROFXS_TXT Description or label for the modeled flood profile</SPAN></P><P><SPAN>MODEL_ID MODEL_ID ID of the hydraulic model used</SPAN></P><P><SPAN>SEQ SEQ Sequence order of cross sections along the stream</SPAN></P><P><SPAN>SOURCE_CIT SOURCE_CIT Citation for data/model source</SPAN></P><P><SPAN>SHAPE SHAPE Geometry of the cross section as a polyline</SPAN></P><P><SPAN>GFID GFID FEMA Global Feature Identifier</SPAN></P><P><SPAN>GlobalID GlobalID Esri Global ID for feature uniqueness</SPAN></P><P><SPAN>SHAPE.STLength() SHAPE.STLength() Length of the line geometry (in map units)</SPAN></P><P><SPAN /></P><P><SPAN STYLE="font-weight:bold;">Intended Use:</SPAN></P><P><SPAN>Floodplain management</SPAN></P><P><SPAN>Regulatory mapping (FIRM)</SPAN></P><P><SPAN>Emergency response planning</SPAN></P><P><SPAN>Risk analysis for insurance and infrastructure</SPAN></P><P><SPAN /></P><P><SPAN STYLE="font-weight:bold;">Coordinate System:</SPAN></P><P><SPAN>Matches NFHL service – typically NAD83 or Web Mercator Auxiliary Sphere (projected). This subset has been converted to Missouri State Plane West (2403)</SPAN></P><P><SPAN /></P><P><SPAN STYLE="font-weight:bold;">Publishe</SPAN><SPAN>r </SPAN><SPAN STYLE="font-weight:bold;">&amp; Publish Date</SPAN></P><P><SPAN>Federal Emergency Management Agency (FEMA)</SPAN></P><P><SPAN>Published 7-23-2024</SPAN></P><P><SPAN> </SPAN><A href="https://hazards.fema.gov/arcgis/rest/services/FIRMette/NFHLREST_FIRMette/MapServer/7" target="_blank" STYLE="text-decoration:underline;"><SPAN>https://hazards.fema.gov/arcgis/rest/services/FIRMette/NFHLREST_FIRMette/MapServer/7</SPAN></A></P><P /><P><SPAN STYLE="font-weight:bold;">Contact Information:</SPAN></P><P><SPAN>NFHL Technical Support – FEMA Map Service Center</SPAN></P><P><SPAN>Email: FEMA-FIRMette@fema.dhs.gov</SPAN></P><P><SPAN /></P><P><SPAN /></P></DIV></DIV></DIV>
licenseInfo:
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title: Cross Sections
type:
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tags: ["FEMA","Flood","NFHL","FIRM","Cross Sections","Cross-Sections"]
culture: en-US
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minScale: 5000000
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