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Evaluation of an Applicability of HEC-RAS 5.0 for 2-D Flood Inundation Analysis
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 Title & Authors
Evaluation of an Applicability of HEC-RAS 5.0 for 2-D Flood Inundation Analysis
Lee, Choon-Ho; Lee, Tae-Geun;
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Recently, the flood frequency and magnitude have increased due to heavy rainfall. Considering the present condition, a flood risk map has been published in many countries to raise awareness about flood damage to people. A flood inundation analysis model, which is used to publish the flood risk map, can be classified as river and inland inundation models according to the inundation cause. Although a variety of flood inundation analysis models are utilized both domestically and overseas, their usability is limited by the expensive price, except for the HEC-RAS model developed by U.S. Army Corps of Engineers (USACE). In the situation, the USACE has developed a 2-D HEC-RAS model that can be linked to the existing 1-D model. This model has been released as a beta version under the name, HEC-RAS 5.0. In this study, the HEC-RAS 5.0 model`s features, usability, applicability, and accuracy were evaluated by comparing the performances on Gokgyo-cheon with the FLUMEN model, which is used for domestic flood risk mapping. The results of this study will contribute to river inundation analysis in many different ways after the HEC-RAS 5.0 model is stabilized.
Flood Risk Map;Inundation Analysis;HEC-RAS 5.0;FLUMEN;
 Cited by
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