Geology and a statistical comparison study on flood events in Kuala Krai, Kelantan

Kuala Krai is among the location that badly affected by the flood. Especially in year 2014, the geohazard of flood is vigorously and this study area is chosen because of this event. Before a statistical comparison study on flood events in Kuala Krai starting from 2014 until 2019 has been done, the geological map of the study area in Dabong, which in consisted of the certain area in Dabong, Kuala Krai has been developed. The updated geological map with the scale of 1: 25 000 has been produced by analysing the data using the ArcMap and Google Earth By using Geographical Information System (GIS) and collected data from previous research and geology company. The methods used during making the map is Analytical Hierarchy Process (AHP). In addition, analysis of the structure and geomorphology of the study area is also done through data collected. The study areas identified were metamorphic rocks, sedimentary rocks, igneous rocks and alluvial soils. Next, the secondary rainfall data starting from year 2013 to 2019 from five DID stations in Kuala Krai has been analysed spatially and temporally. By making the map of certain area in Kuala Krai by using Geographical Information System (GIS) and collected the data from Drainage Irrigation Department (DID).From the map that been created, there will be known the rainfall intensity in Kuala Krai. Hence, based on residential location of flood victim in 2014, the survey study has been conducted to collect the information regarding flood events in 2014 and following years until 2019. The collected flood events information has been analysed to identify their correlation with the rainfall intensity. The results show that the amount of rainfall and the structure of topography in Kuala Krai influence the flood event to occur.