International Journal of Earth Sciences and Engineering

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According to the actual situation of the basin and underlying surface conditions to optimize SCS model parameters and using GIUH model instead of original dimensionless unit hydrograph. We use the analysis tool of GIS to automatic extraction river system, basin, slope and other related geomorphic parameters. The constructed model is used to simulate the rainfall-runoff process at the small basin of Luanchuan Tanyu River, and compared it with the actual measurement process. The simulation results show that the simulation of runoff process is consistent with the actual measurement, and the simulation accuracy is more than 85%, which indicates that the model can be applied to the actual rainfall-runoff relationship.

Keywords

SCS Model, GIUH, GIS.
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