Modelling Spatially Distributed Surface Runoff Generation Using Swat-Vsa: A Case Study in a Watershed of the North-West Himalayan Landscape (2016)

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Soil and Water Assessment Tool (SWAT) and Soil and Water Assessment Tool-Variable Source Area (SWAT-VSA) models were employed to predict surface runoff generation in a watershed of the Himalayan landscape in GIS environment. Both the models differed in term of defining hydrological response units (HRUs) that serves as basis in assigning curve number for surface runoff estimation. HRUs in SWAT was derived by combination of hydrological soil groups based on soil types and land use/land cover (LULC) whereas in SWAT-VSA, it was based on soil wetness index derived from digital elevation model (DEM) and LULC. Both models were calibrated to predict surface runoff at watershed scale. SWAT-VSA predicted quite well [Root Mean Square Error (RMSE)
Year: 2016
Language: English
In: Modeling Earth Systems and Environment, 2 (4): 202 p.

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 Record created 2016-12-02, last modified 2016-12-02