Abstract

AbstractThe potential impact studies of climate change on resources of water is a major concern for water experts, water managers and policymakers. Hydrological models play an important role in understanding and managing surface water resources. In this study, an urbanised watershed Noyyal is taken for streamflow simulation for the uncertainties in the input rainfall. Accurate streamflow model simulation is very useful for forecasting, planning and managing water resources. Currently, satellite-based precipitation product is more popular instead of ground-based data. Rainfall is more important, and principal inputs for precise runoff simulation and the spatial distribution of rainfall strongly affect the runoff hydrograph time and its peak amount. To assess the streamflow prediction tropical rainfall measuring mission (TRMM) 3B42 product was used. In this present study, the Soil and Water Assessment Tool (SWAT) semi-distributed model was applied and tested to evaluate its ability to reproduce these processes in a small watershed on water, sediment and agricultural produce. The coefficient of determination (R2) and Nash Sutcliffe efficiency (NSE) for calibration and validation are 0.53, 0.51 and 0.54, 0.50, respectively.

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