Evaluation of Streamflow Simulation By SWAT Model for The Seyhan River Basin
Abstract
The Soil and Water Assessment Tool (SWAT) was used to model the hydrological water balance from the
Seyhan river basin located in Turkey. The model sensitivity analysis and auto-calibration were conducted at
four sites (i.e., Uctepe, Himmetli, Korkun and Zamanti) using the Sequential Uncertainty Fitting (SUFI-2), the
Generalized Likelihood Uncertainty Estimation (GLUE) and Parameter Solution (ParaSol) algorithms in the
SWAT-Calibration Uncertainty Programs (SWAT-CUP) package. The sensitivity analysis showed that the
base-flow alpha factor (ALPHA_BF) and SCS runoff curve number (CN2) are the most sensitive parameters
for this catchment. All sources of uncertainties were captured by bracketing more than 60% of the observed
river discharge when using SUFI-2 and ParaSol except for ParaSol at Uctepe (57%). Streamflow calibration
was done at a monthly time step for the period of 2001-2007. The results showed that ParaSol gave better
results than those obtained by SUFI-2 and GLUE with regard to the Nash Sutcliffe Efficiency (NSE). Among
all of the calibrated sites and the various calibration algorithms, the highest NSE (0.74) was obtained when the
model was calibrated at Zamanti using the ParaSol algorithm.
Keywords
References
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Details
Primary Language
English
Subjects
Agricultural Engineering
Journal Section
Research Article
Authors
Ahmet İrvem
*
0000-0002-3838-1924
Türkiye
Ashraf El-sadek
This is me
0000-0002-3838-1924
Egypt
Publication Date
December 31, 1018
Submission Date
October 9, 2018
Acceptance Date
November 19, 2018
Published in Issue
Year 2018 Volume: 33 Number: 2