FLOOD DISASTER IN MALAYSIA: APPROACH REVIEW, CAUSES AND APPLICATION OF GEOGRAPHIC INFORMATION SYSTEM (GIS) FOR MAPPING OF FLOOD RISK AREANuriah Abd Majid, Muhammad Rizal Razman, Sharifah Zarina Syed Zakaria,Minhaz Farid Ahmed and Syaidatul Azwani Zulkafli
The study conducted through the method of approach review is to identify the dominant causes affecting the occurrence of floods in Malaysia. In addition, this approach review focuses on the importance and effectiveness of the Geographic Information System (GIS) in flood studies in Malaysia. An approach review study was conducted by screening and analyzing research on flood risk mapping using GIS technique done in Malaysia. The findings show that the floods occurring in Malaysia over the last few years have clearly shown that the risk of flooding has worsened. The flood risk levels from year to year are parallel with human-modified environmental changes. Hence the combination of natural factors such as heavy rain and anthropogenic factors have resulted in extreme flood events. This research adds to the body of knowledge about integration of GIS application with factors studies on flooding, based on what previous research has found in that field. This is important to improve the field of GIS spatial analysis as a tool in flood mitigation in Malaysia. This review records on studies in flood risk mapping derived from GIS application by previous researchers in Malaysia and identified gaps that could give a different perspective in flood risk mitigation study in the future.