Considering a wider set of projections, the consensus on increased flows becomes stronger at higher GWLs in  the Yukon, Mackenzie, Kemijoki, Amur, Hwang Ho, Yangtze, Mekong, Ganges-Brahmaputra, Nile, Zaire and Parana basins . The consensus on decreased flows becomes stronger for higher GWLs in  the Colorado, Tagus, Helmand, Tigris-Euphrates and Amazon. However, in both cases, some models have projected changes of the opposite sign to the consensus. Moreover, the distribution of projected outcomes becomes notably broader at higher GWLs in  the Mississippi, Yangtze and Amazon. Therefore, even with a strong global climate change signal,
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report