Flood Risk Map Based on GIS, and Multi Criteria Techniques (Case Study Terengganu Malaysia)

Ranya Fadlalla Abdalla Elsheikh; Sarra Ouerghi; Abdel Rahim Elhag

doi:10.4236/jgis.2015.74027

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JGIS> Vol.7 No.4, August 2015

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Flood Risk Map Based on GIS, and Multi Criteria Techniques (Case Study Terengganu Malaysia) ()

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DOI: 10.4236/jgis.2015.74027 4,136 Downloads 5,811 Views Citations

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Ranya Fadlalla Abdalla Elsheikh^1,2*, Sarra Ouerghi^2,3, Abdel Rahim Elhag¹

Affiliation(s)

¹GIS Department, School of Survey, Sudan University of Science and Technology, Khartoum, Sudan.
²Department of Geographic and GIS, Faculty of Arts & Humanities, King Abdul Aziz University, Jeddah, Saudi Arabia.
³Laboratoire 3E “Eau-Energie-Environnement” (L.R.AD-10-02), Ecole Nationale d’ Ingénieurs de Sfax, Sfax, Tunisie.

ABSTRACT

The heavy floods in the Terengganu have showed an increasing trend in recent years. Terrain characteristics of land and meteorological properties of the region are main natural factors for this disaster. In this paper, Terengganu was selected as the case study for flood risk analysis. Geographical Information System (GIS) is integrated with Multicriteria Decision Analysis (MCDA) to evaluate the potential flood risk areas. Some of the causative factors for flooding in watershed are taken into account as annual rainfall, basin slope, drainage network and the type of soil. The spatial multi-criteria analysis was used to rank and display potential locations, while the analytical hierarchy process method was used to compute the priority weights of each criterion. Using AHP, the percentages derived from the factors were Rainfall 38.7%, Drainage network 27.5%, Slope of the river basin 19.8% and Soil type 14%. At the end of the study, a map of flood risk areas was generated and validated with a view to assisting decision makers on the menace posed by the disaster.

KEYWORDS

Geographic Information System, Multi Criteria Decision Making, Analytical Hierarchy Process, Pairwise Comparison, Flood

Cite this paper

Elsheikh, R. , Ouerghi, S. and Elhag, A. (2015) Flood Risk Map Based on GIS, and Multi Criteria Techniques (Case Study Terengganu Malaysia). Journal of Geographic Information System, 7, 348-357. doi: 10.4236/jgis.2015.74027.

Conflicts of Interest

The authors declare no conflicts of interest.

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