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http://dx.doi.org/10.5389/KSAE.2012.54.2.087

Study on Damage Reduction by Flood Inundation and the Sediments by SWAT and HEC-RAS Modeling of Flow Dynamics with Watershed Hydrology - For 27 July 2011 Heavy Storm Event at GonjiamCheon Watershed -  

Jung, Chung-Gil (건국대학교 대학원 사회환경시스템공학과)
Joh, Hyung-Kyung (건국대학교 대학원 사회환경시스템공학과)
Yu, Yeong-Seok (건국대학교 대학원 사회환경시스템공학과)
Park, Jong-Yoon (건국대학교 대학원 사회환경시스템공학과)
Kim, Seong-Joon (건국대학교 사회환경시스템공학과)
Publication Information
Journal of The Korean Society of Agricultural Engineers / v.54, no.2, 2012 , pp. 87-94 More about this Journal
Abstract
This study is to evaluate flood inundation and to recommend measures of damage reduction on sediment by concentrated torrential rainfall at Gonjiamcheon Watershed (183.4 $km^2$). Firstly, the SWAT (Soil and Water Assessment Tool) was simulated streamflow and sediment at upstream. Then, we produced a map of floodplain boundary by using HEC-RAS (Hydrologic Engineering Centers River Analysis System) at downstream. The SWAT model was calibrated with 2 years (2008~2009) daily streamflow and validated for another years (2010~2011. 7. 31). The SWAT model was simulated with 3 years (2008~2010) by monthly water quality (Sediment) at Gonjiamcheon water quality station. The streamflow and sediment from SWAT model were input as boundary conditions to HEC-RAS. The results of HEC-RAS indicated that mapping of floodplain boundary was Jiwol and Jiwol 2 district. Additionally, inundation area and depth were assessed and applied BMPs scenario for managing the sediment yield.
Keywords
SWAT; HEC-RAS; BMPs; SWAT-CUP; Streambank stabuluzation; Porus gully plug;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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