Author(s) :

Raphael Sutiono.

Volume/Issue :

Abstract :

Flooding is one of the most catastrophic natural disasters impacting millions of people worldwide and causing trillions of dollars in annual economic loss. While literature exists on the subject, it often focuses on a limited scope of variables at a time, rather than synthesizing a holistic perspective of factors contributing to flood severity and their consequences. This narrative review synthesizes literature from various contexts to better evaluate how population density and the extent of protective flood infrastructure are related to economic losses due to flooding. The discussion and analysis points include a narrative review and analysis of literature that measures loss assessments, community infrastructure characteristics, urbanization trends, and adaptations within cities across the globe. Across the reviewed studies, a recurring pattern indicates that damage from flooding escalates with population density, but they are significantly reduced where all-encompassing protection infrastructure is present; the addition of green infrastructure and proactive adaptation measures - especially those guided by effective policy - further enhances resilience to flooding. Taken together, the literature consistently highlights population exposure and infrastructure capacity as leading determinants of loss outcomes. This review underscores implications for urban planning, policymaking, and disaster mitigation by emphasizing the need not only to evaluate hazard exposure, but also to adapt the physical urban environment - through infrastructure upgrades and equitable planning - for greater sustainability and resilience. The approach presented in this narrative review synthesizes existing literature to point to opportunities to better combine infrastructure, demographic, and spatial data for enhanced disaster preparedness.