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<br />Chapter 3 Working With HEC-RAS - An Overview <br /> <br /> <br />Figure 3.5 Cross Section Data editor <br /> <br />The basic data required for each cross section is shown on the Cross Section <br />Data editor in Figure 3.5. Additional cross section features are available <br />under Options from the menu bar. These options include: adding, copying, <br />renaming and deleting cross sections; adjusting cross section elevations, <br />stations, and n-values; ineffective flow areas; levees; encroachments; blocked <br />obstructions; horizontal variation of n- values; and setting the maximum <br />number of station and elevation points. <br /> <br />Also available from the Cross Section Data editor is the ability to plot any <br />cross section or reach profile. Edit features are available to cut, copy, paste, <br />insert, and delete data from the Cross Section X-Y Coordinates grid. <br /> <br />Once the cross-section data are entered, the modeler can then add any <br />hydraulic structures such as bridges, culverts, weirs and spillways. Data <br />editors, similar to the cross section data editor, are available for the various <br />types of hydraulic structures. If there are any stream junctions in the river <br />system, additional data are required for each junction. The Junction data <br />editor is available from the Geometric Data window. <br /> <br />Once geometric data are entered, the data should be saved to a file on the hard <br /> <br />3-6 <br />