Name the lake in Ethiopia which is the source of the Blue Nile?
Blue Nile its source to its confluence has been variously reported as being between and . This uncertainty over the length might partially result from the fact that the river flows through a series of virtually impenetrable gorges cut in the Ethiopian Highlands to a depth of some —a depth comparable to that of the Grand Canyon of the Colorado River in the United States. According to materials published by the Central Statistical Agency, the Blue Nile has a total length of , of which are inside Ethiopia. The Blue Nile flows generally south from Lake Tana and then west across Ethiopia
Nile joined by the Blue Nile. The White Nile starts in equatorial East Africa, and the Blue Nile begins in Ethiopia. Both branches are on the western flanks of the East African Rift. The source of the Nile is sometimes considered to be Lake Victoria, but the lake has feeder rivers of considerable size. The Kagera River, which flows into Lake Victoria near the Tanzanian town of Bukoba, is the longest feeder, although sources do not agree on which is the longest tributary of the Kagera and hence the most distant source of the Nile itself. It is either the Ruvyironza,