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<br />HEC-6 GRAPHICS <br /> <br />~ <br /> <br />1. HEC-6 Graphics Introduction <br />The Stream Hydraulics Graphics Package has been modified to accept <br />HEC-6 input and output data. With this addition the graphics program is <br />now able to handle three different sources of input and output data for <br />graphical display. These three sources are HEC-2, GEDA, and HEC-6. <br />The input data for HEC-6 are composed of three types. They are the <br />geometric, sediment, and hydrologic (histogram) input data. The graphics <br />program will only graphically display the geometric input data. The <br />geometric HEC-6 input data are very similar to HEC-2 input data. The <br />only significant difference is the HEC-6 H card. The graphics program <br />has been modified to accept the H card and plot the H card variables. <br /> <br />, <br />. <br /> <br />None of the sediment or hydrologic HEC-6 input data will be graphically <br /> <br /> <br />displayed by the program. The hydrologic and sediment data are available <br /> <br /> <br />for graphical dispaly only after tape 95 has been generated by the <br /> <br /> <br />execution of the HEC-6 program. The output data on tape 95, from an <br /> <br /> <br />HEC-6 computer run, is composed of hydraulic, hydrologic, and sediment <br /> <br /> <br />data for different time periods. The graphical program is able to display <br /> <br /> <br />the change in the moveable bed with time in the cross section routine and <br /> <br /> <br />display up to 39 different variables that are available for plotting from <br /> <br />tape 95. <br /> <br />. <br /> <br />The hydraulic data are computed for a subcritical run starting at the <br /> <br /> <br />downstream end and computed in an upstream direction. The sediment <br /> <br />: <br /> <br />computations are performed in the opposite direction, from upstream to <br /> <br />1 <br />