Course
The river rises near Amsterdam, Mpumalanga, South Africa, and flows easterly through Eswatini, where it enters the Lebombo Mountains. The 13 km gorge forms the boundary between Eswatini and South Africa. For approximately twenty kilometres, it forms the border between South Africa (province of KwaZulu-Natal) and Mozambique. There, in the Ndumo Game Reserve, it absorbs its largest tributary, the Pongola River. It then meanders through the Mozambican coastal plain and empties into southern Maputo Bay, some 85 kilometres downstream. In Eswatini, the river is called the Great Usutu or Lusutfu and flows through the towns of Bhunya, Luyengo, Siphofaneni, and Big Bend, Swaziland, Big Bend. The town of Big Bend is near a point in which the river meanders abruptly. The Great Usutu is the largest river in Eswatini, it is the site of Eswatini's lowest point (21 m above sea level), and is known for whitewater rafting. No large towns have been able to form along its banks because of deep narrow valleys and dense forests. It is, however, home to some golf courses, hotels, and nature reserves.Tributaries
From the origin to its mouth, in order, tributaries are the: Seganagana River, Seganagana, Bonnie Brook River, Bonnie Brook, Mpuluzi River, Mpuluzi, Buhlungu River, Buhlungu, Umvenvane River, Umvenvane, Lusushwana River, Lusushwana, Sidvokodvo River, Sidvokodvo, Mkhondvo, Mhlamani River, Mhlamani, Mzimneni River, Mzimneni, Mzimphofu River, Mzimphofu, Mhlathuzane River, Mhlathuzane, Mtsindzekwa River, Mtsindzekwa, Nyetane River, Nyetane, Funuane River, Funuane, and the Pongola Rivers.Dams on this river
* Westoe Dam * Lubovane DamSee also
* List of rivers of South AfricaReferences
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