SSP3 . Global direct damages from fluvial floods are projected to rise to €1250 billion yr-1 under a 3ºC global warming level and SSP5 socioeconomic scenario . A model-based study of selected water-related sectors like fluvial and coastal flooding, agricultural productivity of major crops, hydroelectric power generation, and thermal power generation provides much conservative estimates of GDP loss . The study shows that without adaptation, loss of global GDP could be 0.094% under RCP8.5 and SSP5 and 0.013% under RCP2.6 and SSP1 scenarios in 2090 , with regional values for Africa , Asia , Australasia , North America  and South and Central America  . So, while there is general agreement about negative impacts on GDP due to water-related risks in the future, the magnitude of GDP loss estimates varies substantially and depends on various model assumptions . Updating costs while improving the modelling of uncertainties is essential for evidence-based decision-making .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report