 The study examined the potential impact of climate change on the hydrology of the Neando River and Lake Tana catchments in Ethiopia. It used 17 general circulation models, GCMs, to project future climate conditions, and then compared these with historical data from the region. The results showed that the mean runoff and extreme peak flows in the Neando catchment would increase significantly during the 2050s, while the Lake Tana catchments mean volumes and high slash low flows were less clear. The study also found that the GCM uncertainty was more important than the hydrological model uncertainty in explaining the unclear trend seen in the Lake Tana catchment. This article was authored by M. T. Tay, V. Tejica, N. P. O. Dromoy and others.