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Article

Assessment of Baseflow Estimates Considering Recession Characteristics in SWAT

1
Department of Agricultural and Biological Engineering, Purdue University, 225 South University ST., West Lafayette, IN 47907, USA
2
Regional Infrastructure Engineering, Kangwon National University, Chuncheon, Gangwon 200-701, Korea
3
Sustainability Innovation Lab at Colorado (SILC), University of Colorado Boulder, Boulder, CO 80309, USA
*
Author to whom correspondence should be addressed.
Water 2018, 10(4), 371; https://doi.org/10.3390/w10040371
Received: 7 February 2018 / Revised: 21 March 2018 / Accepted: 22 March 2018 / Published: 24 March 2018
Baseflow is influenced by incoming groundwater to aquifers and is closely related to watershed characteristics. Understanding baseflow characteristics is of great importance to river ecosystems and water management. Baseflow estimation typically depends on the observed streamflow in gauged watersheds, but accurate predictions of streamflow through modeling can also be useful in estimating baseflow. However, uncertainty occurs in the baseflow estimation process when modeling streamflow. Therefore, the purpose of this study is to compare the method that is proposed by Arnold and Allen (Scenario I) to an improved recession prediction method where the alpha factor (baseflow recession coefficient) is recalibrated and is applied to SWAT (Scenario II). Although the differences between the results (NSE, R2, RMSE, MAE, d) of Scenarios I and II were small regarding streamflow and recession, the Scenario II method more accurately reflected the recession characteristics than the Scenario I method. Furthermore, the Scenario II method was better in baseflow prediction than for the Scenario I method proposed by Arnold and Allen. Therefore, these outputs pave the way and contribute to an efficient method for water management in watersheds. View Full-Text
Keywords: alpha factor; baseflow; Bflow; streamflow recession; SWAT alpha factor; baseflow; Bflow; streamflow recession; SWAT
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MDPI and ACS Style

Lee, J.; Kim, J.; Jang, W.S.; Lim, K.J.; Engel, B.A. Assessment of Baseflow Estimates Considering Recession Characteristics in SWAT. Water 2018, 10, 371. https://doi.org/10.3390/w10040371

AMA Style

Lee J, Kim J, Jang WS, Lim KJ, Engel BA. Assessment of Baseflow Estimates Considering Recession Characteristics in SWAT. Water. 2018; 10(4):371. https://doi.org/10.3390/w10040371

Chicago/Turabian Style

Lee, Jimin, Jonggun Kim, Won S. Jang, Kyoung J. Lim, and Bernie A. Engel 2018. "Assessment of Baseflow Estimates Considering Recession Characteristics in SWAT" Water 10, no. 4: 371. https://doi.org/10.3390/w10040371

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