The assessment was based on high, medium, and low emission IPCC scenarios, for the 2030s, 2050s, and 2080s.26 This indicated the associated temperature increases and likely declines in precipitation, as in the maps below. The project impact on gross state domestic product (GSDP) is indicated below. Rivers flowing through this region are vital for the survival and well-being of more than a billion people, most of whom live in the surrounding plains.