Simulation of Upper Kuantan River Basin Streamflow Using SWAT Model

This paper examines the capabilities of Soil and Water Assessment Tools (SWAT) in simulating streamflow in a tropical watershed - upper Kuantan river basin. Two statistical metrics were used for model evaluation; i) coefficient of determination (R-2) and ii) Nash-Sutcliffe efficiency index (NSI). The calibration result shows that there is a good agreement between the observed and simulated monthly streamflow with R-2=0.84 and NSI=0.82. For validation the result is acceptable which the value of R-2=0.59 and NSI=0.57. The results suggest that SWAT model is able to simulate the hydrologic characteristics of the tropical watershed well.