
This technical report examines the impacts of urban flooding in New York City following Hurricane Ida, with a focus on building performance and stormwater management. It reviews the causes of urban flooding, the limitations of existing stormwater infrastructure, and the effects of surface water and basement flooding on various building types. The report provides recommendations for upgrading drainage systems, implementing green infrastructure, and increasing public awareness to mitigate future flood risks. It is intended for professionals involved in building design, construction, and urban resilience planning.