Latest Submission

Consultancy Call for Application: Strengthening Groundwater Governance and Data Collection and Reporting

UNESCO is currently implementing the third phase of the project “Governance of Groundwater Resources in Transboundary Aquifers” (GGRETA-3). In the Read more

Job Opportunities : Integrated Transboundary River Basin Management for the Sustainable Development of the Limpopo River Basin

The Global Water Partnership Southern Africa (GWPSA) is pleased to invite candidates to submit their applications for the positions of Read more

2020-2021 Orange-Senqu Surface Water Quantity Synoptic Analysis

Welcome to the first surface water quantity report of the Orange-Senqu River Commission (ORASECOM), for the hydrological year 2020-2021. For Read more

Khakea-Bray Transboundary Dolomite Aquifer Recharge Assessment

Documentation and Data: A read-only folder structure of all reports, data, and models related to the STAS can be accessed Read more

South Africa



Of all water demand on the Orange–Senqu system in 2010, about 93% came from South Africa, of which 70% was from the irrigation sector. Historically and currently, the Orange–Senqu and its tributary Vaal system has provided the source of water, minerals and energy on which economic development has been based.

Water supply required to meet demands of the Witwatersrand economic hub and those of large-scale irrigation schemes further downstream has been assured through the construction of numerous dams and a series of transfer schemes, mostly on the upper Orange–Senqu and Vaal river systems. It is consequently regarded as the most developed river system in southern Africa.