Urban flood hazard assessment and management practices in South Asia: a review

This study aims to identify trends and gaps and highlight potential research prospects in the field of urban flooding in South Asia. based on an extensive literature review, this paper reviewed urban flood hazard assessment methods using hydraulic/hydrological models and urban flood management practices in South Asia. Urban flooding is a frequent disaster in cities. With the increasing imperviousness caused by rapid urbanization and the rising frequency and severity of extreme events caused by climate change, the hydrological status of the urban area has changed, resulting in urban floods. 

This study discovered that hydrologic/hydraulic models like HEC-RAS/HMS, MIKE, SWMM, and others are being used more frequently to estimate the risk of urban flooding as a result of technological advancements and the availability of high-resolution topographic data. Based on current technologies and infrastructures, different countries have different approaches to managing urban flooding.