Author(s): R. Jha; S. Herath; K. Musiake
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Keywords: No Keywords
Abstract: Newly developed IIS distributed hydrological model (IISDHM) is used to simulate floods. Major three components of the model, unsaturated flow, overland flow and river flow are modeled by using three dimensional Richard's equation, two dimensional diffusive form of St. Venant equation and one dimensional full dynamic form of St. Venant equation for river network respectively. The model is applied to Ping river basin, a tributary of Chao Phraya river basin having a catchment area of 6300 sq. Km and hourly simulation is performed for a period of four months (Jul. to Oct., 1992). The simulated peaks and observed peaks are found to match well. GIS of the catchment consisting of topography, soil distribution, landuse and river network has been developed at 1 km grid size and an interactive software is developed to input the data.
Year: 1997