Modelling spatially distributed surface runoff generation using SWAT-VSA: a case study in a watershed of the north-west Himalayan landscape

S. Kumar, A. Singh, D.P. Shrestha

Research output: Contribution to journalArticleAcademicpeer-review

24 Citations (Scopus)
4 Downloads (Pure)

Abstract

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)
Original languageEnglish
Article number202
Number of pages11
JournalModeling earth systems and environment
Volume2
Issue number4
DOIs
Publication statusPublished - 2016

Keywords

  • 2023 OA procedure

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