flooding may increase by £60-200 million for projected 2-4℃ warming scenarios; enhanced adaptation actions could manage flooding up to a 2ºC scenario but will be insufficient beyond that . Analyses conducted in South Korea suggests that future flood levels could exceed current flood protection design standards by as much as 70% by 2100, considerably increasing urban flood risk . Modelling of urban flood damage in the Kelani River Basin in Sri Lanka showed increased frequency of flooding by 2030 could increase potential urban property damage by up to 10.2% . Urban flood impacts may also exacerbate health burdens , which are compounded by damage to medical facilities , as observed in urban areas of Ghana . In addition, emerging research shows the cascading consequences of hazard events, in this case urban flooding, on other risks to well-being in ways that are particularly severe for the urban poor, including mental ill-health, incidents of domestic violence impacting children and women, chronic diseases and salinity of drinking water ; Section 4.2.4.5; Section 6.2.4.2; Box 7.2; Section 8.4.5.2).
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report