BIOGRAPHY

Wan Mohd Sulaiman bin W. Ismail
Wan Mohd Sulaiman bin W Ismail is Deputy Director for Flood Management Division in the Drainage and Irrigation Department, Ministry of Natural Resources and Environment Malaysia. He is responsible for the evaluation of the flood conditions in the country and initiating solutions using flood management measures and programs. He previously worked for the departmentís other offices in several parts of the country as project/district engineer to manage implementation projects in flood mitigation, river management and coastal zone protection works, as well as drainage and irrigation projects for agriculture. After graduating, he worked in the departmentís headquarters in Kuala Lumpur as engineer in the Planning and Design Office. He holds a Civil Engineering degree from Middlesex Polytechnic London.

Abstract
Flood Hazard Mapping Using Geospatial Data
In Malaysia, flash floods are common occurrences and may occur from time to time throughout the year in flood prone areas. In terms of flood extent, flash floods affect smaller areas but because of its tendency to occur in densely urbanised areas, the value of damaged property is high and disruption to traffic and businesses substantial. However, in river floods especially the river floods of Kelantan and Pahang, the flood extent is large and can extend over 1000 square kilometres. Although the value of property and density of affected population is lower, the damage inflicted by these floods can also be high because the area affected is large. In order to combat the floods, various flood mitigation measures have been carried out. Structural flood mitigation alone can only provide protection levels of normally 10 to 100 years average recurrence intervals (ARI). One of the economically effective non-structural approaches in flood mitigation and flood management is using a geospatial technology which involves flood forecasting and warning services to the flood prone areas. This approach which involves the use of Geographical Information Flood Forecasting system also includes the generation of a series of flood maps. There are three types of flood maps namely Flood Hazard Map, Flood Risk Map and Flood Evacuation Map. Flood Hazard Map is used to determine areas susceptible to flooding when discharge of a stream exceeds the bank-full stage. Early warnings of incoming flood events will enable the flood victims to prepare themselves before flooding occurs. Properties and lives could be saved by keeping their movable properties above the flood levels and if necessary, an early evacuation from the area. With respect to flood fighting, an early warning with reference through a series of flood maps including flood hazard map, flood risk map and flood evacuation map of the approaching flood should be able to alert the organisation in charge of the flood fighting actions and the authority to undertake the necessary decisions, and the general public to be aware of the impending danger. However this paper will only discuss on the generations of Flood Hazard Maps and the use of Flood Risk Map and Flood Evacuation Map by using the geospatial data.
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