The Sudd is a vast swamp in South Sudan, formed by the White Nile's Baḥr al-Jabal section. The area which the swamp covers is one of the world's largest wetlands and the largest freshwater wetland in the Nile Basin.
Lake No[1] is a lake in South Sudan. It is located just north of the vast swamp of the Sudd, at the confluence of the Bahr al Jabal and Bahr el Ghazal rivers, and marks the transition between the Bahr al Jabal and White Nile proper.