Flood Risk Map Based on GIS, and Multi Criteria Techniques (Case Study Terengganu Malaysia) ()
Ranya Fadlalla Abdalla Elsheikh1,2*,
Sarra Ouerghi2,3,
Abdel Rahim Elhag1
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.
DOI: 10.4236/jgis.2015.74027
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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.
Share and Cite:
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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