Nile it forms a significant river delta. The lake itself is on the border of DR Congo, but the Nile is not a border river at this point. After leaving Lake Albert, the river continues north through Uganda and is known as the Albert Nile. The Nile river flows into South Sudan just south of Nimule, where it is known as the Bahr al Jabal ("Mountain River"). Just south of the town it has the confluence with the Achwa River. The Bahr al Ghazal, itself long, joins the Bahr al Jabal at a small lagoon called Lake No, after which the
Cataracts of the Nile river bed exposed. These distinctive features of the river between Aswan and Khartoum have led to the stretch being often referred to as the Cataract Nile, while the downstream portion is occasionally referred to as the "Egyptian" Nile. The geological distinction between these two portions of the river is considerable. North of Aswan, the river bed is not rocky, but is instead composed of sediment, and far from being a shallow river, it is believed that the bedrock was previously eroded to be several thousand feet deep. This created a vast canyon that is now filled by the sediment, some