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<br />7. CROSS SECTION DATA <br /> <br />Computed results are printed for each cross section following the <br />data input list for the first profile and following the job control data <br />for subsequent profiles. Headings listing the names of each of the <br />forty variables arranged in the same spatial order are printed periodically <br />throughout the data. Appendix VI contains definitions of these variables. <br /> <br />8. FLOW DISTRIBUTION <br /> <br />The cross section data printout shows the distribution of flow <br />in three subdivisions of the cross section; left overbank, channel and <br />right overbank. Additional output showing the distribution of flow in <br />overbanks of the cross section may be requested by the user. When the <br />flow distribution option is requested, the program prints out the lateral <br />distribution of area, velocity and percent of total discharge for up <br />to thirteen subdivisions of the cross section. This program output is <br />requested for all cross sections of a profile by setting variable ITRACE <br />on the J2 equal to fifteen. Flow distribution for a single cross section <br />may be requested by setting ITRACE on the X2 card equal to fifteen. For <br />additional information and an example of this output see Appendix II. <br /> <br />9. SPECIAL NOTES <br /> <br />Special notes and error messages are printed at various locations <br />in the cross section data to inform the user of various assumptions or <br />options that have been used during computations. These notes should be <br />carefully reviewed to assure an accurate profile. Special notes are <br />described in Appendix V. <br /> <br />10. PROGRAM TRACE <br /> <br />It is sometimes useful to print out important variables as they <br />are computed to aid in checking, debugging and understanding the program. <br />Two levels of program trace are available for this purpose. The minor <br />trace prints values of variables, for each trial, used in the following <br />computations: <br /> <br />(1) Interpolated cross sections <br />(2) Manning's 'n' from known water surface elevations <br />(3) Computed water surface elevation <br />(4) Weir flow <br />(5) Critical water surface elevation <br /> <br />The major trace, in addition to data printed for the minor trace, <br />prints values of variables used in the computation of the hydraulic <br />properties of each subarea of a cross section. <br /> <br />32 <br />