Flood damage and risk assessment for urban area in Malaysia

In recent years, flood risk map has been widely accepted as a tool for flood mitigation. The risk of flooding is normally illustrated in terms of its hazard (flood inundation maps), while vulnerability emphasizes the consequences of flooding. In developing countries, published studies on flood vulne...

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Main Authors: Noor Suraya, Romali, Zulkifli, Yusop
Format: Article
Language:English
Published: IWA Publishing 2021
Subjects:
Online Access:http://umpir.ump.edu.my/id/eprint/31830/
http://umpir.ump.edu.my/id/eprint/31830/1/Flood%20damage%20and%20risk%20assessment%20for%20urban%20area%20in%20Malaysia.pdf
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author Noor Suraya, Romali
Zulkifli, Yusop
author_facet Noor Suraya, Romali
Zulkifli, Yusop
author_sort Noor Suraya, Romali
building UMP Institutional Repository
collection Online Access
description In recent years, flood risk map has been widely accepted as a tool for flood mitigation. The risk of flooding is normally illustrated in terms of its hazard (flood inundation maps), while vulnerability emphasizes the consequences of flooding. In developing countries, published studies on flood vulnerability assessment are limited, especially on flood damage. This paper attempts to establish a flood damage and risk assessment framework for Segamat town in Johor, Malaysia. A combination of flood hazard (flood characteristics), exposure (value of exposed elements), and vulnerability (flood damage function curve) were used for estimating the flood damage. The flood depth and areal extent were obtained from flood modeling and mapping using HEC-HMS/RAS and Arc GIS, respectively. Expected annual damage (EAD) for residential areas (50,112 units) and commercial areas (9,318 premises) were RM12.59 million and RM2.96 million, respectively. The flood hazard map shows that Bandar Seberang area (46,184 properties) was the most affected by the 2011 flood. The flood damage map illustrates similar patterns, with Bandar Seberang suffering the highest damage. The damage distribution maps are useful for reducing future flood damage by identifying properties with high flood risk.
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spelling ump-318302021-08-20T14:21:10Z http://umpir.ump.edu.my/id/eprint/31830/ Flood damage and risk assessment for urban area in Malaysia Noor Suraya, Romali Zulkifli, Yusop TA Engineering (General). Civil engineering (General) TD Environmental technology. Sanitary engineering In recent years, flood risk map has been widely accepted as a tool for flood mitigation. The risk of flooding is normally illustrated in terms of its hazard (flood inundation maps), while vulnerability emphasizes the consequences of flooding. In developing countries, published studies on flood vulnerability assessment are limited, especially on flood damage. This paper attempts to establish a flood damage and risk assessment framework for Segamat town in Johor, Malaysia. A combination of flood hazard (flood characteristics), exposure (value of exposed elements), and vulnerability (flood damage function curve) were used for estimating the flood damage. The flood depth and areal extent were obtained from flood modeling and mapping using HEC-HMS/RAS and Arc GIS, respectively. Expected annual damage (EAD) for residential areas (50,112 units) and commercial areas (9,318 premises) were RM12.59 million and RM2.96 million, respectively. The flood hazard map shows that Bandar Seberang area (46,184 properties) was the most affected by the 2011 flood. The flood damage map illustrates similar patterns, with Bandar Seberang suffering the highest damage. The damage distribution maps are useful for reducing future flood damage by identifying properties with high flood risk. IWA Publishing 2021-02 Article PeerReviewed pdf en cc_by_nc_nd_4 http://umpir.ump.edu.my/id/eprint/31830/1/Flood%20damage%20and%20risk%20assessment%20for%20urban%20area%20in%20Malaysia.pdf Noor Suraya, Romali and Zulkifli, Yusop (2021) Flood damage and risk assessment for urban area in Malaysia. Hydrology Research, 52 (1). 142 -159. ISSN 1998-9563. (Published) https://doi.org/10.2166/nh.2020.121 https://doi.org/10.2166/nh.2020.121
spellingShingle TA Engineering (General). Civil engineering (General)
TD Environmental technology. Sanitary engineering
Noor Suraya, Romali
Zulkifli, Yusop
Flood damage and risk assessment for urban area in Malaysia
title Flood damage and risk assessment for urban area in Malaysia
title_full Flood damage and risk assessment for urban area in Malaysia
title_fullStr Flood damage and risk assessment for urban area in Malaysia
title_full_unstemmed Flood damage and risk assessment for urban area in Malaysia
title_short Flood damage and risk assessment for urban area in Malaysia
title_sort flood damage and risk assessment for urban area in malaysia
topic TA Engineering (General). Civil engineering (General)
TD Environmental technology. Sanitary engineering
url http://umpir.ump.edu.my/id/eprint/31830/
http://umpir.ump.edu.my/id/eprint/31830/
http://umpir.ump.edu.my/id/eprint/31830/
http://umpir.ump.edu.my/id/eprint/31830/1/Flood%20damage%20and%20risk%20assessment%20for%20urban%20area%20in%20Malaysia.pdf