<P> The course of the Nile in Sudan is distinctive . It flows over six groups of cataracts, from the sixth at Sabaloka just north of Khartoum northward to Abu Hamed . Due to the tectonic uplift of the Nubian Swell, the river is then diverted to flow for over 300 km south - west following the structure of the Central African Shear Zone embracing the Bayuda Desert . At Al Dabbah it resumes its northward course towards the first Cataract at Aswan forming the' S' - shaped Great Bend of the Nile already mentioned by Eratosthenes . </P> <P> In the north of Sudan the river enters Lake Nasser (known in Sudan as Lake Nubia), the larger part of which is in Egypt . </P> <P> Below the Aswan High Dam, at the northern limit of Lake Nasser, the Nile resumes its historic course . </P> <P> North of Cairo, the Nile splits into two branches (or distributaries) that feed the Mediterranean: the Rosetta Branch to the west and the Damietta to the east, forming the Nile Delta . </P>

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