Temporal and spatial variations in water provides the routing of the stage, discharge, energygradient and other hydraulic parameters in the channel. The water routing component has thefollowing three major features: (1) Numerical solution of the continuity and momentum equationsfor longitudinal flow, (2) evaluation of flow resistance due to longitudinal and transverse flows, and(3) upstream and downstream boundary conditions. The continuity and momentum equations in thelongitudinal direction are
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