WMS:Managing Cross Sections

For the new 1D Hydraulic Cross Section coverage, the cross section geometry is stored in a text database file on disk. When extracting cross sections they are saved to a new (or existing) database file. This database was the basis for the development of the cross section data in the ArcHydro data model. Cross sections in the database can be used for the development of hydraulic models such as HEC-RAS.

Extracting cross sections from a TIN is not the only way cross section geometry can be created. It is also possible to enter surveyed cross sections, however in order to use them in WMS for floodplain delineation, or modeling of any kind they must be georeferenced (tied to a geographic location). Further cross sections can be edited, merged, etc.

The Manage Cross Sections command in the River Tools menu allows creating a new database or opening an existing database to add geometries, edit existing ones, and provide proper georeferencing information. It is also possible to open a cross section database using the Open command from the File menu.

Manage Cross Section dialog.

Manage Cross Sections Dialog

The Manage Cross Sections dialog allows editing of existing cross section databases and the creation and editing of new ones.

Cross Section Database CsDb Management dialog.

The dialog contains the following:

• Cross Section Database
  • Select cross section database from drop-down menu
  • New Database – Allows for creation of new cross section database to be defined.
  • Delete Database – Deletes database.
  • File type to import
    • "CSDB file (*.wms; *.sms; *.h5; *.idx)" – File type to import.
    • "HEC-RAS / HEC-2 (*.g*; *.dat)" – File type to import.
  • Import... – Brings up Open dialog to find file to import.
  • Export... – Brings up Select a database name dialog to save the exported cross section database.
  • Database→Cov – Creates a new coverage based on the cross section database selected.
  • Cov→LnProps – Extracts line properties from the cross section coverage.
  • Database→DTM – Creates a digital terrain model from the cross section geometry
  • Topo ID – Opens the CsDB Topo Management dialog. Cross section Topographic Management allows managing cross section topographic IDs and descriptions.
  • Line Prop Types – Opens the Line Property Types dialog that allows editing and assigning different data types to the line.
  • PT Prop Types – Opens the Point Property Types dialog that allows inclusion or exclusion of any or all of the left bank, right bank, and thalweg of the cross section.

• Cross Section
  • Number of Cross Sections – Shows the number of cross sections in the database.
  • The table contains the Reach Name, the Station location, and the Assignment (or Cross Section database arc ID).
  • New – Create a new cross section.
  • Edit – Opens the Cross-Section Attributes dialog where cross section properties may be edited.
  • Copy – Copies a selected cross section.
  • Delete – Deletes the selected cross section.
  • The graph shows the left bank, right bank, and thalweg elevations for a selected cross section in the table.

Related Topics

• Edit Cross Section Database
• Extract Cross Sections
• River Tools Overview (Hydraulic Modeling in WMS)