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Article

Development and Verification of the Available Number of Water Intake Days in Ungauged Local Water Source Using the SWAT Model and Flow Recession Curves

1
Department of Urban and Environmental Disaster Prevention Engineering, Kangwon National University, Kangwon-do 25913, Korea
2
Department of Land, Water, and Environment Research, Korea Institute of Civil Engineering and Building Technology, Gyeonggi-do 10223, Korea
*
Author to whom correspondence should be addressed.
Academic Editors: Daniel Bucur and José María Senciales-González
Water 2021, 13(11), 1511; https://doi.org/10.3390/w13111511
Received: 27 April 2021 / Revised: 19 May 2021 / Accepted: 26 May 2021 / Published: 27 May 2021
(This article belongs to the Special Issue River Basin Management and River Evolution Research)
Climate change significantly affects water supply availability due to changes in the magnitude and seasonality of runoff and severe drought events. In the case of Korea, despite a high water supply ratio, more populations have continued to suffer from restricted regional water supplies. Though Korea enacted the Long-Term Comprehensive Water Resources Plan, a field survey revealed that the regional government organizations limitedly utilized their drought-related data. These limitations present a need for a system that provides a more intuitive drought review, enabling a more prompt response. Thus, this study presents a rating curve for the available number of water intake days per flow, and reviews and calibrates the Soil and Water Assessment Tool (SWAT) model mediators, and found that the coefficient of determination, Nash–Sutcliffe efficiency (NSE), and percent bias (PBIAS) from 2007 to 2011 were at 0.92%, 0.84%, and 7.2%, respectively, which were “very good” levels. The flow recession curve was proposed after calculating the daily long-term flow and extracted the flow recession trends during days without precipitation. In addition, the SWAT model’s flow data enables the quantitative evaluations of the number of available water intake days without precipitation because of the high hit rate when comparing the available number of water intake days with the limited water supply period near the study watershed. Thus, this study can improve drought response and water resource management plans. View Full-Text
Keywords: soil and water assessment tool; flow recession curve; available number of water intake days; local water source soil and water assessment tool; flow recession curve; available number of water intake days; local water source
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MDPI and ACS Style

Choi, J.-R.; Chung, I.-M.; Jeung, S.-J.; Choo, K.-S.; Oh, C.-H.; Kim, B.-S. Development and Verification of the Available Number of Water Intake Days in Ungauged Local Water Source Using the SWAT Model and Flow Recession Curves. Water 2021, 13, 1511. https://doi.org/10.3390/w13111511

AMA Style

Choi J-R, Chung I-M, Jeung S-J, Choo K-S, Oh C-H, Kim B-S. Development and Verification of the Available Number of Water Intake Days in Ungauged Local Water Source Using the SWAT Model and Flow Recession Curves. Water. 2021; 13(11):1511. https://doi.org/10.3390/w13111511

Chicago/Turabian Style

Choi, Jung-Ryel, Il-Moon Chung, Se-Jin Jeung, Kyung-Su Choo, Cheong-Hyeon Oh, and Byung-Sik Kim. 2021. "Development and Verification of the Available Number of Water Intake Days in Ungauged Local Water Source Using the SWAT Model and Flow Recession Curves" Water 13, no. 11: 1511. https://doi.org/10.3390/w13111511

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