Improvement and Analysis for Accuracy of Baseflow Using SWAT-CUP Premium in the Yongjeon Stream, South Korea
Authors:
Preprint
- 16 November 2022
- preprint
- Published by Springer Nature in Research Square
Abstract
Here, SWAT simulation results are calibrated and validated using SWAT-CUP Premium, and R2 (coefficient of determination) values of simulated and observed flows are compared. According to the SWAT analysis of Cheongsong Yongjeon-stream basin, a low accuracy of 0.40 was the R2 (coefficient of determination) value for simulated and observed flows, and the base flow was calculated at an annual average of 46.659 m3/s. During the same period, after calibration and validation using SWAT-CUP Premium, the R2 value of simulated and observed flows was improved to 0.71, and the evaluation indexes showed that NS was 0.51, PBIAS was 37.1, P-factor was 0.73, and R-factor was 0.33, indicating that the relationship between observed and simulated flows was improved. In addition, after calibration and validation, the base flow was 56.951 m3/s, which was a more accurate value compared to the one before calibration and validation.Keywords
All Related Versions
This publication has 23 references indexed in Scilit:
- Baseflow simulation using SWAT model in an inland river basin in Tianshan Mountains, Northwest ChinaHydrology and Earth System Sciences, 2012
- Internal validation of conceptual rainfall–runoff models using baseflow separationJournal of Hydrology, 2010
- A global and efficient multi-objective auto-calibration and uncertainty estimation method for water quality catchment modelsJournal of Hydroinformatics, 2007
- Modelling hydrology and water quality in the pre-alpine/alpine Thur watershed using SWATJournal of Hydrology, 2007
- Increasing streamflow and baseflow in Mississippi River since the 1940s: Effect of land use changeJournal of Hydrology, 2006
- Estimating Uncertain Flow and Transport Parameters Using a Sequential Uncertainty Fitting ProcedureVadose Zone Journal, 2004
- Application of two hydrologic models with different runoff mechanisms to a hillslope dominated watershed in the northeastern US: a comparison of HSPF and SMRJournal of Hydrology, 2003
- Simulation of daily runoff in Central Asian alpine watershedsJournal of Hydrology, 2000
- Regional estimation of base flow and groundwater recharge in the Upper Mississippi river basinJournal of Hydrology, 2000
- River flow forecasting through conceptual models part I — A discussion of principlesJournal of Hydrology, 1970