|
KMID : 1024520040130010019
|
|
Journal of the Environmental Sciences
2004 Volume.13 No. 1 p.19 ~ p.26
|
|
|
Analysis of Flood Inundation Area using HEC-RAS/GIS
|
|
Ahn Seung-Seop
Lee Jeung-Seok
Kim Jong-Ho
|
|
|
Abstract
|
|
|
|
The purpose of the study was to construct a forecast system of flood inundation area at natural stream channels. The study built the system to interpret the flood inundation area in four stages ; constructing topography data around the stream channel, interpreting flood discharge, interpreting flood elevation in the stream channel, and interpreting the flood inundation and mapping. According to the result of the analysis, as for the characteristic of flood inundation around the area within the purview of this study, although there were areas where flood inundation over a bank caused a flooded area, the failure of the internal drainage in the ground lower than flood elevation caused more serious problems. Rather than the existing method where only the estimated flood elevation data is used based on the hydrographical stream channel trace model(such as the HEC-RAS model) to establish the flood inundation area, if the procedure introduced in this study was applied to interpret the floodplain, actual flood inundation area could be visibly confirmed.
|
|
|
KEYWORD
|
|
|
Flood inundation area, Floodplain, HEC-RAS, GIS
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|