Performance of SWAT Hydrologic Model for Runoff Simulation in Wang River Basin
Main Article Content
Abstract
The purpose of this study was to evaluate the efficiency of SWAT hydrological model for runoff simulation in Wang River Basin. The daily meteorological observation data in 2004–2013, land-use in 2009 and topographical data were studied. The whole basin was divided into 18 sub-basins and 10 stations of basin outlets were defined to observe the daily runoff to calibrate the SWAT model. In addition, the basin physical parameters including surface water, groundwater, watershed, soil, and channel flow, were adjusted to improve the efficiency of the model in the runoff simulation. The validation of monthly model at W.4A showed that the Coefficient Of Efficiency (COE) and coefficient of correlation (R2 ) were 0.79 and 0.8331, respectively, which were within the acceptable range. The results showed that the SWAT model was effective in simulating the runoff of the Wang River Basin, especially in the non-dam sub-basin and the end of the Wang River Basin. The model was more appropriate to simulate the runoff during the wet season than the dry season. However, the SWAT model had its limitations on the maximum monthly runoff model, especially in the month with flood problem, the maximum monthly runoff from the model was lower than the observed value.
Article Details
The articles published are the opinion of the author only. The author is responsible for any legal consequences. That may arise from that article.
References
[2] R. Srinivasan, T. S. Ramanarayanan, J. G. Arnold, and S. T. Bednarz, “Large areahydrologic modeling and assessment: Part II,” Journal of the American Water Resources Association, vol. 34 no. 1, pp. 91–101, 2007.
[3] Bureau of Large Scale Water Resources Development, Royal Irrigation Department. (2012, September). Wang River Basins [Online]. Available: web.rid.go.th/lproject/const/water25/25river/07wang.ppt (in Thai).
[4] Hydro and Agro Informatics Institute. (2012, February). Data collection and analysis data project of 25 basins and flood drought model, Wang River Basins [Online]. Available: http://www.thaiwater.net/web/attachments/25basins/07-wong.pdf (in Thai).
[5] W. Wangpimool. (2009, May). Operation manual on SWAT model applications (2nd ed.) [Online]. Available: http://www.tnmckc.org/upload/document/IKMP/5.Component4/1.DSF/SWAT_Manual_Thai_V2-2009.pdf (in Thai).
[6] B. Khantisidhi and O. Vonnarart. (2014, July 30). ARC SWAT 2012 UserGuide [Online]. Available: https://www.dropbox.com/s/yhfyjwgjnpgp9rq/ SWAT_UserGuide_Thai.pdf?dl=0 (in Thai).
[7] C. Santhi, J. G. Arnold, J. R. Williams, W. A. Dugas, R. Srinivasan, and L. M. Hauck, “Validation of the SWAT model on a Large River Basin with point and nonpoint,” Journal of the American Water Resources Association, vol. 37 no. 5, pp. 1169–1188, 2001.
[8] B. Buranet, “The effect of climate change and land use change on catchment hydrology in Huai Kraseaw Basin,” M.S. thesis, Department of Civil Engineering, Faculty of Engineering King Mongkut’s University of Technology Thonburi, 2009 (in Thai).
[9] O. Vesurai, “The impacts of land use changes on runoff in the upper Nan Basin using SWAT hydrologic model,” M.S. thesis, Department of Water Resources Engineering, Faculty of Engineering Chulalongkorn University, 2005 (in Thai).
[10] M. Jain and S. Sharma. Hydrological modeling of Vamsadhara River Basin, India using SWAT. presented at International Conference on Emerging Trends in Computer and Image Processing Dec. 15–16, 2014 Pattaya (Thailand) [Online]. Available: http://psrcentre.org/images/extraimages/21%201214056.pdf
[11] P. Wuttichaikitcharoen and C. Saratun. Runoff estimation in Mae Chaem basin using SWAT. presented at the 5th National Convention on Water Resources Engineering [Online]. Available: https://www.researchgate.net/profile/Piyawat_Wuttichaikitcharoen/publication/2 6 2 4 8 4 2 5 5 _ R u n o f f _ E s t i m a t i o n _ i n _Mae_Chaem_Basin_using_SWAT_in_Thai/links/0046353bebe692d42a000000/Runoff- Estimation-in-Mae-Chaem-Basin-using-SWATin-Thai.pdf
[12] P. Phomcha, “Suitability of SWAT model for simulating of monthly streamflow in Lam Sonthi watershed,” Journal of Industrial Technology, vol. 7, no. 2, pp. 49–56, 2011.
[13] S. Sophonphattanakul, “Changes in hydrometeorologic condition and land use and their impacts on reservoir projects in the upper Ping River basin,” M.S. thesis, Department of Civil Engineering, Faculty of Engineering King Mongkut’s University of Technology Thonburi, 2008 (in Thai).
[14] S. Intaruksa, “The application of geo-informatics for studying runoff quantity using hydrologic model (SWAT) case study of Maejang basin, Lampang Province,” M.S. thesis, Department of Geoinformatics, Faculty of Geoinformatics Burapha University, 2012 (in Thai).