J. Bio. Env. Sci.16(1), 83-90, January 2020
The applicability of the Soil and Water Assessment Tool (SWAT) model has been demonstrated in many countries around the world with different goals and objectives. The intent of this study was to evaluate the performance of the SWAT model on simulating hydrological process in an agricultural watershed. The model is embedded within ArcGIS and integrated various spatial environmental data including information about soil features, land cover, weather and topographic features. The performance of the model was evaluated using the Coefficient of Determination (R2) and Nash-Sutcliffe efficiency (NSE). The daily observed streamflow data obtained from the Bureau of Research and Standards under the Department of Public Works and Highways (DPWH-BRS) were utilized for the model calibration and validation and the results were found to be acceptable and reliable. Considering the good results of the SWAT model in this study, the model is very promising for land and water management studies and expected to give valuable information to authorities, policy makers, and land and water resources managers.
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