SWAT-based runoff and sediment simulation in a small watershed of Nepalese river: a case study of Jhimruk watershed. (17th January 2022) - Rijal, Madhab
Watershed models represent a scientific understanding of various processes involved within a watershed or simulate natural processes of the flow of water, sediment, etc. This study presents the methodology of evaluating soil and water assessment tool (SWAT) and test the applicability of SWAT on runoff and sediment load simulation in the Jhimruk watershed located in hilly region of Nepal. Daily runoff and sediment event data of 1995-1998 period were used in this study. The evaluation statistics (NSE = 0.768 and 0.689 for flow and NSE = 0.648 and 0.582 for sediment calibration and validation; coefficient of determination R 2 = 0.774 and 0.689 for flow and R 2 = 0.656 and 0.636 for sediment calibration and validation, respectively) for the daily runoff simulation indicate that the model results were acceptable and the model performed well in capturing trend of runoff and sediment. The results indicate that the SWAT model can simulate the runoff and sediment yield with good performance. The study indicates that SWAT can be efficiently used in hilly region of Nepal.