The longest river in the world, the Nile, flows north towards the Mediterranean Sea and is fed by 2 main tributaries, the White Nile and Blue Nile. Originating at Lake Victoria (Uganda) the White Nile flows to the Sudan where it meets the Blue Nile that starts in Lake Tana and greatly increases the flow. The river drains 10 % of the African continent or an area greater than 3,349,000 km2 (1,293,049 mi2). The remotest headwater stream Ruvyironza which feeds into Lake Victoria is regarded as the ultimate source of the Nile River.
The Nile is an important source of water for many as well as hydropower, indeed 80% of Sudan’s electricity comes from structures on the Blue Nile. Ten countries fall within the drainage basin of the Nile, because of the diverse needs of these countries an effort not to impact on nations downstream, the Nile Basin initiative was launched in 1999.