The Central African River is a major river system in the region, consisting of the CONGO, Uele, and Ubangi rivers. The CONGO River is the largest and most powerful river in Africa, with a length of over 4, 700 km. The Uele River is a tributary of the CONGO River, originating in the Central African Republic and flowing through the Democratic Republic of the CONGO. The Ubangi River is a tributary of the CONGO River, originating in the Central African Republic and flowing through the Democratic Republic of the CONGO and the Republic of the CONGO. All three rivers are important sources of water for the people of Central Africa.