SWAT model application and prediction uncertainty analysis in the Lake Tana Basin, Ethiopia

• DOI: 10.1002/hyp.7457
• Publication Date: 2009-09-17T13:43:05Z
• Authors: Shimelis G. Setegn; Ragahavan Srinivasan; Assefa M. Melesse; Bijan Dargahi
• Keywords: Base flow; GLUE; SWAT model; Water balance; Hydrological modelling

Abstract Lake Tana Basin is of significant importance to Ethiopia concerning water resources aspects and the ecological balance area. Many years mismanagement, wetland losses due urban encroachment population growth, droughts are causing its rapid deterioration. The main objective this study was assess performance applicability soil assessment tool (SWAT) model for prediction streamflow in Basin, so that influence topography, land use, climatic condition on hydrology can be well examined. physically based SWAT calibrated validated four tributaries Tana. Sequential uncertainty fitting (SUFI‐2), parameter solution (ParaSol) generalized likelihood estimation (GLUE) calibration analysis methods were compared used set‐up model. evaluation statistics streamflows shows there a good agreement between measured simulated flows verified by coefficients determination Nash Sutcliffe efficiency greater than 0·5. hydrological basin indicated baseflow an important component total discharge within area contributes more surface runoff. More 60% watershed through evapotranspiration. Copyright © 2009 John Wiley & Sons, Ltd.