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Serial Use of Hydrodynamic and Water Quality Model of the Geum River using EFDC-Hydro and WASP7.2  

Seo, Dongil (충남대학교 환경공학과)
Seo, MiJin (충남발전연구원)
Koo, Myungseo ((주)서영엔지니어링)
Woo, Jaekyun ((주)서영엔지니어링)
Publication Information
Journal of Korean Society of Water and Wastewater / v.23, no.1, 2009 , pp. 15-22 More about this Journal
Abstract
This study reports the serial use of a 3-D hydrodynamic model, EFDC-Hydro and a dynamic water quality model WASP7.2 that are maintained by USEPA. The 48 km section of the Geum River downstream between Daechung Dam and Gongju was selected as a sample study site. Topographical information was used to accurately represent morphology of the study site and boundary conditions were derived from governmental databases including WAMIS by Ministry of Land and Ocean and WEIS by Ministry of Environment. EFDC-Hydro was successfully calibrated for observed water level and WASP was calibrated using monthly observed water quality data obtained from the above sources. It was found that the current water quality target of BOD for the Geum River-H point could not be met on monthly basis though every other tributary of the area would meet its own water quality target as assigned in Korean TMDL. This study proposed the new target BOD water quality for the Gabcheon and Mihocheon as 4.3 and 3.6 mg/l, respectively so that the Geum River-H point can meet the target. When Sejong City is constructed, it is estimated that effluent discharge limit of BOD must be less than 4.5 mg/l to meet water quality of the point. This study shows that it is possible to carry out more precise modeling considering both water movement and water kinetics by using EFDC and WASP simultaneously.
Keywords
EFDC-Hydro; WASP7.2; The Geum River; Sejong City; TMDL;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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