A review of modelling methodologies for flood source area (FSA) identification

Abstract Flooding is an important global hazard that causes average annual loss of over 40 billion USD and affects a population 250 million globally. The complex process flooding depends on spatial temporal factors such as weather patterns, topography, geomorphology. In urban environments where the landscape ever-changing, ground cover, green spaces, drainage systems have significant impact. Understanding source areas major impact is, therefore, crucial for strategic flood risk management (FRM). Although area (FSA) identification not new concept, its application only recently being applied in modelling research. Continuous improvements technology methodology related to models enabled this research move beyond traditional methods, that, recent years, projects looked affected recognised need address at source, study influence overall risk. These approaches are emerging field FRM propose innovative methodologies mitigation design implementation; however, they relatively under-examined. paper, we present review currently used identify FSAs, i.e. unit response (UFR) adaptation-driven (ADA). We highlight their potential use adaptive decision making outline key challenges adoption practises.