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Water Quality Behavior by the Sluice Gate Operation of Freshwater Lake  

김선주 (건국대학교 생명환경과학대학)
김성준 (건국대학교 생명환경과학대학)
김필식 (건국대학교 대학원)
이창형 (환경관리공단)
Publication Information
Magazine of the Korean Society of Agricultural Engineers / v.45, no.1, 2003 , pp. 91-101 More about this Journal
Abstract
Boryeong Seadike located at southwestern seashore of Korean peninsula completed in 1997. Sluice gate operation can be an important factor to maintain lake water quality and reduce retaining time of pollutants within lake. The lake water quality simulation model, WASPS was adopted and tested to find out proper gate operation timing and discharge amount. From the simulation of sluice gate operation, the results showed that the later the time of discharge for loosing 1 day successively to 6 days, the better the quality of water. Discharge amount showed relatively minor changes of water quality. This means that pollutants flowed into lake from watershed do not have enough time to mix up with deep water when the gate opened at early time. About 3 days delay of discharge caused the dilution effect to stabilize the lake water quality in case of Boryeong freshwater lake.
Keywords
Freshwater lake; Water quality model; Sea dike sluice; WASP5;
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