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Each drainage basin is separated topographically from adjacent basins by a geographical barrier such as a ridge, hill or mountain, which is known as a water divide. Other terms that are used to describe a drainage basin are catchment, catchment area, catchment basin, drainage area, river basin, water basin and watershed.
Water Management Areas (WMAs) are parts of South Africa that are managed by Catchment Management Agencies (CMAs). A CMA is established in terms of the National Water Act of 1998. (As of December 2020 only two CMAs have been established). The list should be complete, and in accordance with the definitions of the Department of Water Affairs ...
Grey areas are endorheic basins that do not drain to the ocean. The list of drainage basins by area identifies basins (also known as "catchments" or, in North American usage, "watersheds"), sorted by area, which drain to oceans , mediterranean seas , rivers, lakes and other water bodies.
The Water Boards in South Africa (see list below), together indirectly served more than 24 million people in 90 municipalities in 2005, or about half the population of South Africa. The three largest Water Boards - Rand Water in Gauteng Province, Umgeni Water in KwaZulu Natal Province and Overberg Water – indirectly serve 10 million, 4 ...
Watershed delineation is the process of identifying the boundary of a watershed, also referred to as a catchment, drainage basin, or river basin. It is an important step in many areas of environmental science, engineering, and management, for example to study flooding, aquatic habitat, or water pollution.
Inkomati WMA, or Inkomati Water Management Area (coded: 5), [1] in South Africa is situated in the north-eastern part of South Africa in the Mpumalanga Province, with a small area in the Limpopo Province. It borders on Mozambique in the east and on Swaziland in the south-east.
The Olifants River (Afrikaans: Olifantsrivier) is a river in the northwestern area of the Western Cape Province of South Africa. The upper and main catchment area of the Olifants river is around Ceres and the Cederberg mountains. The Clanwilliam and Bulshoek dams are located on the river and provide water for the towns and farms along the ...
In many cases, the district municipalities are the water services authorities. However, the national government can assign responsibility for service provision to local municipalities. Overall, there are 169 water services authorities in South Africa, including water boards, district municipalities, local municipalities and municipal companies.