Niger River Niger River The Niger River (; , ) is the principal river of West Africa, extending about . Its drainage basin is in area. Its source is in the Guinea Highlands in southeastern Guinea. It runs in a crescent through Mali, Niger, on the border with Benin and then through Nigeria, discharging through a massive delta, known as the Niger Delta or the Oil Rivers, into the Gulf of Guinea in the Atlantic Ocean. The Niger is the third-longest river in Africa, exceeded only by the Nile and the Congo River (also known as the Zaïre River). Its main tributary
White Nile built. A ferry connects the roads between Adjumani and Moyo, and navigation of the river is otherwise done by small boat or canoe. From the point at which the river enters South Sudan from Uganda the river goes under the name of "Mountain Nile". From Lake No in South Sudan the river becomes the "White Nile" in its strictest sense, and so continues northwards into Sudan where it ends at its confluence with the Blue Nile. From Nimule in South Sudan, close to the border with Uganda, the river becomes known as the "Mountain Nile" or "Baḥr al-Jabal" (also "Baḥr