Flow hydraulics, sediment transport, and channel morphological changes ofthe Rio Salado, Salt River, Phoenix, Arizona were simulated using CCHE2D, adepth-averaged two-dimensional hydrodynamic and sediment transport modeldeveloped at the National Center for Computational Hydro-Science and Engineeringat the University of Mississippi. The bed material was treated as multiple grain-sizedsediment mixtures and simulated by a sediment transport module. Changes in bedelevation were calculated by solving the sediment mass conservation equation. Thecalculated results were compared with HEC-RAS results and field observation, whichshowed that the two-dimensional model was more applicable in simulating flood zonecoverage, non-uniform sediment sorting and channel geomorphology changes.
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