Flood risk assessment and its application in the eastern part of <scp>D</scp>haka <scp>C</scp>ity, <scp>B</scp>angladesh

Abstract Traditional flood design methods are increasingly supplemented by risk‐oriented methods based on comprehensive risk analysis. This analysis requires: (1) the estimation of flood hazard that represents intensity of a flood, (2) estimation of vulnerability, e.g. percentage of damage to total property as a function of flood depth and duration, and (3) the consequences of flooding, e.g. loss of life and damage to property. In this study, flood hazard maps of the B alu‐ T ongikhal R iver system within the eastern part of D haka C ity are prepared using geoprocessing tools and a hydrodynamic model. The raster‐based vulnerability maps and expected damage maps of several return period floods are then produced. In comparison with the classical inundation maps,…