Water politics in the Nile Basin share the river – Egypt, Sudan, Ethiopia, Uganda, Kenya, Tanzania, Burundi, Rwanda and the Democratic Republic of Congo with Eritrea as an observer. During the colonial period, Britain effectively controlled the Nile through its military presence in Africa. Since Sudanese independence, Sudan has renegotiated with Egypt over the use of the Nile waters. The 1959 agreement between Sudan and Egypt allocated the entire average annual flow of the Nile to be shared among the Sudan and Egypt at 18.5 and 55.5 billion cubic meters respectively, but ignored the rights to water of the remaining eight Nile countries. Ethiopia contributes 80%
White Nile base of Mount Kikizi. The Kagera River, which flows into Lake Victoria near the Tanzanian town of Bukoba, is the longest feeder river for Lake Victoria, although sources do not agree on which is the longest tributary of the Kagera, and hence the most distant source of the Nile itself. The source of the Nile can be considered to be either the Ruvyironza, which emerges in Bururi Province, Burundi, near Bukirasaz or the Nyabarongo, which flows from Nyungwe Forest in Rwanda. These two feeder rivers meet near Rusumo Falls on the border between Rwanda an Tanzania. These waterfalls are known