Spatio-temporal analysis in determination of flood extent based on rainfall intensity and water level data in Kuala Krai, Kelantan

Abstract

Kuala Krai is one of the districts in Kelantan that affected by flooding almost every year. The recent worse case is during Kelantan big yellow flood event in 2014. The main objective of this paper is to descriptively interpret the relationship between rainfall event and flooding in Kuala Krai, Kelantan using pass data of rainfall intensity and water level. Those data have been verified using ground data collection of flood level six month right after Kelantan big yellow flood event in 2014. Other related primary data also have been collected among the 2014 flood victims in Kuala Krai using survey questionnaire. The observed flood level data and other related primary data have been delineated and spatially analysed using ArcGIS to visualize the flood extent maps of each study area in Kuala Krai based on extreme flooding data on 2014. It can be concluded that urban area gave high percentage of flood extent compared to rural area of Kuala Krai.