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. .. . HYDRAULICS GRAPHICS PACKAGE I. Gene!al Pa~kage Description The Hydraulics Graphics Package described herein displays geometric , data and mathematical results pertinent to hydraulic analyses. The package was initially developed in the Hydrologic Engineering Center by Robert D. Carl. The package has the capability of plotting generalized data in profile or section. The original version accepted data in HEC-2 compatible format only. The most recent version of the program includes modifications to allowplottfng "GEDA" and HEC-6 input and output. Alfredo E. Montalvo of the Hydrologic Engineering Center developed the routines compatible with GEDA and HEC-6 as well as modifying these two programs to output computational results. For infonnation, regarding these routines, the user must reference the following publications: "Hydraulics Graphics Package Addendum", and "GEDA Program Modifications", both dated November 1979, and "Hydraulics Graphics Package Addendum, HEC-6 Graphics," dated February 1980. The package presently consists of three modules. One module of the package draws geometric cross-section data and includes the capability of displaying not only ground surface lines, but also channel restrictions (such as bridges, sediment levels, levees, and encroachments), channel modifications (such as the results of cut and fill operations), and parametric data pertinent to a computer model (such as bank stations, flow type transition elevations, and representations of geometric data). Another module of the package displays mathematical results in a profile view. The display plots user defined variables versus cumulative river distance. The display capability is limited only by the driving mathematical model. Recently, the package displayed, in profile view, data such as left and 1