Assessment of flood risk exposure for the Foshan-Zhongshan region in Guangdong province, China

Floods have caused 20% of the worldwide economic losses resulting from catastrophe events over 2008 to 2018. In China, the annual flood economic losses have exceeded CNY 100 billion from 1990 to 2010, which is equivalent to 1% to 3% of China’s Gross Domestic Product (GDP). This paper presents a rain...

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Main Authors: Zhang, Qi, Jian, Wei, Lo, Edmond Yat-Man
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2021
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Online Access:https://hdl.handle.net/10356/145904
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1459042021-01-14T02:24:26Z Assessment of flood risk exposure for the Foshan-Zhongshan region in Guangdong province, China Zhang, Qi Jian, Wei Lo, Edmond Yat-Man School of Civil and Environmental Engineering Institute of Catastrophe Risk Management Engineering::Environmental engineering Urban flooding HEC-HMS Floods have caused 20% of the worldwide economic losses resulting from catastrophe events over 2008 to 2018. In China, the annual flood economic losses have exceeded CNY 100 billion from 1990 to 2010, which is equivalent to 1% to 3% of China’s Gross Domestic Product (GDP). This paper presents a rainfall-runoff model coupled with an inundation estimation to assess the flood risk for a basin within the Foshan-Zhongshan area of the Pearl River Delta (PRD) region in China. A Hydrologic Engineering Center’s Hydrologic Modeling System (HEC-HMS) model was constructed for the crisscrossing river network in the study basin where the West and North Rivers meet, using publicly accessible meteorological, hydrological and topographical datasets. The developed model was used to analyze two recent flood events, that in July 2017 with large upstream river inflows, and in June 2018 with high local rainfall. Results were further used to develop the needed river rating curves within the basin. Two synthetic events that consider more severe meteorological and hydrological conditions were also analyzed. These results demonstrate the capability of the proposed model for quick assessment of potential flood inundation and the GDP exposure at risk within the economically important PRD region. Nanyang Technological University Published version Support from the Institute of Catastrophe Risk Management (ICRM), Nanyang Technological University and Axis Reinsurance is gratefully acknowledged. 2021-01-14T02:24:26Z 2021-01-14T02:24:26Z 2020 Journal Article Zhang, Q., Jian, W., & Lo, E. Y.-M. (2020). Assessment of flood risk exposure for the Foshan-Zhongshan region in Guangdong province, China. Water, 12(4), 1159-. doi:10.3390/w12041159 2073-4441 https://hdl.handle.net/10356/145904 10.3390/w12041159 4 12 en Water © 2020 The Authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Environmental engineering
Urban flooding
HEC-HMS
spellingShingle Engineering::Environmental engineering
Urban flooding
HEC-HMS
Zhang, Qi
Jian, Wei
Lo, Edmond Yat-Man
Assessment of flood risk exposure for the Foshan-Zhongshan region in Guangdong province, China
description Floods have caused 20% of the worldwide economic losses resulting from catastrophe events over 2008 to 2018. In China, the annual flood economic losses have exceeded CNY 100 billion from 1990 to 2010, which is equivalent to 1% to 3% of China’s Gross Domestic Product (GDP). This paper presents a rainfall-runoff model coupled with an inundation estimation to assess the flood risk for a basin within the Foshan-Zhongshan area of the Pearl River Delta (PRD) region in China. A Hydrologic Engineering Center’s Hydrologic Modeling System (HEC-HMS) model was constructed for the crisscrossing river network in the study basin where the West and North Rivers meet, using publicly accessible meteorological, hydrological and topographical datasets. The developed model was used to analyze two recent flood events, that in July 2017 with large upstream river inflows, and in June 2018 with high local rainfall. Results were further used to develop the needed river rating curves within the basin. Two synthetic events that consider more severe meteorological and hydrological conditions were also analyzed. These results demonstrate the capability of the proposed model for quick assessment of potential flood inundation and the GDP exposure at risk within the economically important PRD region.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Zhang, Qi
Jian, Wei
Lo, Edmond Yat-Man
format Article
author Zhang, Qi
Jian, Wei
Lo, Edmond Yat-Man
author_sort Zhang, Qi
title Assessment of flood risk exposure for the Foshan-Zhongshan region in Guangdong province, China
title_short Assessment of flood risk exposure for the Foshan-Zhongshan region in Guangdong province, China
title_full Assessment of flood risk exposure for the Foshan-Zhongshan region in Guangdong province, China
title_fullStr Assessment of flood risk exposure for the Foshan-Zhongshan region in Guangdong province, China
title_full_unstemmed Assessment of flood risk exposure for the Foshan-Zhongshan region in Guangdong province, China
title_sort assessment of flood risk exposure for the foshan-zhongshan region in guangdong province, china
publishDate 2021
url https://hdl.handle.net/10356/145904
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