Development of Flood Hazard Index (FHI) of the Kelantan River Catchment Using Geographic Information System (GIS) Based Analytical Hierarchy Process (AHP)

Kelantan has been facing several cases of catastrophic flooding, causing significant damage to this area. Heavy monsoon rainfall is believed trigger those floods. This study aims identify and classify the flood occurrence using River catchment’s hazard index (FHI) based on analytical hierarchy process (AHP). developed FHI AHP spatial analysis in geographic information system (GIS) environment. Six physical parameters were selected: annual rainfall, slope, river density, land use cover (LULC); elevation; soil permeability. According model, was first ranked parameter terms importance weight score. Moreover, Tanah Merah Jeli high-risk areas for The present suggests that GIS-based method can be highly effective mapping hazards benefit management decision-making.