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http://dx.doi.org/10.4491/KSEE.2016.38.3.117

Analysis of Scenarios for Environmental Instream Flow Considering Water Quality in Saemangeum Watershed  

Kim, Se-Min (Department of Civil Engineering, Chonbuk National University)
Park, Young-Ki (Department of Civil Engineering, Chonbuk National University)
Won, Chan-Hee (Department of Environmental Engineering, Chonbuk National University)
Kim, Min-Hwan (Department of Civil & Environmental Engineering, Honam University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.38, no.3, 2016 , pp. 117-127 More about this Journal
Abstract
In this study, analyzed scenarios of the environmental instream flow for water quality improvement in Saemangeum watershed. In order to get an environmental instream flow, Methodology is selected for Retention-Basin, reservoir expansion, new dam construction, Modification of water intake and drainage system, Rearrangement of plan for system which Yongdam and Seomjin river dam have been used water supply. The study composed of diverse scenario of Environmental instream flow increasement and analyzed the effect of improving the water quality by the QUAL2K model and calculation of runoff for saemangeum watershed by SWAT model. The following water quality indicators have been simulated in irrigation and non-irrigation period for BOD and T-P. When scenarios applied to water quality model, Improvement rate in the water quality for Total Maximum Daily loads of Mankyung B unit watershed during irrigation and non-irrigation period is BOD (28.70%), T-P (17.09%) and BOD (28.51%), T-P (28.68%) respectively. Dongjin A unit watershed during irrigation and non-irrigation period is BOD (14.39%), T-P (14.59%) and BOD (15.54%), T-P (19.46%) similary. Simulation results is to quantify the constribution of the improvement in the water quality. In particular, It was demonstrative that improving effect for water quality was evaluated to be great in non-irrigation period.
Keywords
Saemangeum Basin; Environmental Instream Flow; QUAL2K; SWAT; Water Quality Improvement;
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Times Cited By KSCI : 5  (Citation Analysis)
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