Flood damage and risk assessment for urban area in Malaysia

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)

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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.

Item Type: Article
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Commercial; Flood damage curve; Flood damage map; Malaysia; Residential
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TD Environmental technology. Sanitary engineering
Faculty/Division: Faculty of Civil Engineering Technology
Depositing User: Mrs Norsaini Abdul Samat
Date Deposited: 20 Aug 2021 14:21
Last Modified: 20 Aug 2021 14:21
URI: http://umpir.ump.edu.my/id/eprint/31830
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