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http://dx.doi.org/10.5389/KSAE.2022.64.6.001

Assessment of Estuary Reservoir Water Quality According to Upstream Pollutant Management Using Watershed-Reservoir Linkage Model  

Kim, Seokhyeon (Research Institute of Agriculture and Life Sciences, College of Agriculture and Life Sciences, Seoul National University)
Hwang, Soonho (Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign)
Kim, Sinae (Department of Rural Systems Engineering, Seoul National University)
Lee, Hyunji (Department of Rural Systems Engineering, Seoul National University)
Jun, Sang Min (Convergence Major in Global Smart Farm, Seoul National University)
Kang, Moon Seong (Department of Rural Systems Engineering, Research Institute of Agriculture and Life Sciences, Institute of Green Bio Science and Technology, Seoul National University)
Publication Information
Journal of The Korean Society of Agricultural Engineers / v.64, no.6, 2022 , pp. 1-12 More about this Journal
Abstract
Estuary reservoirs were artificial reservoir with seawalls built at the exit points of rivers. Although many water resources can be saved, it is difficult to manage due to the large influx of pollutants. To manage this, it is necessary to analyze watersheds and reservoirs through accurate modeling. Therefore, in this study, we linked the Hydrological Simulation Program-FORTRAN (HSPF), Environmental Fluid Dynamics Code (EFDC), and Water quality Analysis Simulation Program (WASP) models to simulate the hydrology and water quality of the watershed and the water level and quality of estuary lakes. As a result of applying the linked model in stream, R2 0.7 or more was satisfied for the watershed runoff except for one point. In addition, the water quality satisfies all within 15% of PBIAS. In reservoir, R2 0.72 was satisfied for water level and the water quality was within 15% of T-N and T-P. Through the modeling system, We applied upstream pollutant management scenarios to analyze changes in water quality in estuary reservoirs. Three pollution source management were applied as scenarios, the improvement of effluent water quality from the sewage treatment plant and the livestock waste treatment plant was effective in improving the quality of the reservoir water, while the artificial wetland had little effect. Water quality improvement was confirmed as a measure against upstream pollutants, but it was insufficient to achieve agricultural water quality, so additional reservoir management is required.
Keywords
Estuary reservoir; water quality; linkage model; upstream pollutant management;
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Times Cited By KSCI : 6  (Citation Analysis)
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