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The Caledon River, or Mohokare in Sesotho, is located in south-east Africa, rising in the Drakensberg Mountains in Lesotho. It then flows south-west, marking the border with South Africa before entering South Africa's Free State province. It then flows West before meeting the Orange River near Bethulie in southern Free State.

The Tugela River (also known as Thukela) is the largest river in KwaZulu-Natal Province, South Africa. The river originates in the Drakensberg Mountains, Mont-aux-Sources, (itself the source of tributaries of two other major South African rivers, the Orange River and the Vaal River) and plunges 947 metres down the Tugela Falls.

Afrikaans/Dutch: Oranjerivier), Gariep River, Groote River or Senqu River is the longest river in South Africa. It rises in the Drakensberg mountains in Lesotho, flowing westwards through South Africa to the Atlantic Ocean. The river forms part of the international borders between South Africa and Namibia and between South Africa and Lesotho, as well as several provincial borders within South Africa. Although the river does not pass through any major cities, it plays an important role in the South African economy by providing water for irrigation, as well as hydroelectric power. The river was named by Robert Jacob Gordon after the Dutch Royal House.

The Orange rises in the Drakensberg mountains along the border between South Africa and Lesotho, about 193 km (120 miles) west of the Indian Ocean and at an altitude of over 3000 m. While in Lesotho, the river is known as the Senqu and parts of it freeze in winter, because of the altitude there.

The Limpopo River rises in central southern Africa, and flows generally eastwards to the Indian Ocean. It is around 1,750 kilometres (1,087 mi) long, with a drainage basin 415,000 square kilometres (160,200 sq mi) in size. Its mean annual discharge is 174.288 m³/s (6,155 cu ft/s) at its mouth. The Limpopo is the second largest river in Africa that drains to the Indian Ocean, after the Zambezi River.

The Limpopo river flows in a great arc, first zigzagging north and then northeast, then turning east and finally southeast. Then it serves as a border for about 640 kilometres (398 mi), separating South Africa to the southeast from Botswana to the northwest and Zimbabwe to the north. There are several rapids as the river falls off Southern Africa's inland escarpment.