Abstract
AbstractThe authors present a new set of tools for solving the one-dimensional Saint-Venant equations (1D-SVEs) of flow transport throughout dendritic river networks. The numerical solver is integrated with a set of geoprocessing tools, which include automatic cross-section selection, river bathymetry extraction, and a selection of model parameters, that facilitate the implementation of the 1D-SVE simulation setup. In addition, geographic information systems (GIS)–based preprocessing tools are developed to provide a seamless coupling of the hydraulic model to a hydrological model, which provides estimates of surface and subsurface runoff from hill slopes and performs routing in river networks using simplified ordinary differential equations. The hill slope runoff and streamflow generated by CUENCAS are redistributed as lateral inflows to the channels modeled by the 1D-SVE hydraulic model. The coupling of the hydraulic and hydrologic (H-H) models enables the validation of the hydrological model at internal...
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