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08 April 2025 | Story Andre Damons | Photo Andre Damons
DrSophie-Biskop_ProfFrancois-Engelbrecht
Dr Sophie Biskop from the Department of Geography at the Schiller University Jena, Germany, and Prof Francois Engelbrecht, a Professor of Climatology at the Global Change Institute (GCI), University of the Witwatersrand, at the Southern African Mountain Conference (SAMC).

The severe El Niño drought of 2015/16, which culminated in the Vaal dam reaching an alarming low water level (~25%), prompted scientists to try and predict whether climate change could bring a drought so severe and long lasting that Gauteng could run out of water. 

Prof Francois Engelbrecht, a Professor of Climatology at the Global Change Institute (GCI), University of the Witwatersrand, is one of the scientists working on this project and says though they cannot predict a Day Zero drought with certainty, he thinks it is possible that Gauteng might run out of water in the 2030s or 2040s.

 “This is the biggest climate change risk South Africa faces”, he said.  

Prof Engelbrecht and Dr Sophie Biskop from the Institute of Geography at the Friedrich Schiller University Jena, Germany, together with other scientists are working on a project involving hydrological modelling to predict and prevent a Day Zero from happening. Dr Biskop presented their research paper titled ‘Projected hydrological futures of South Africa's mega-dam region’ at the second Southern African Mountain Conference (SAMC2025) in March, indicating there is a high risk that the water demand in Gauteng will exceed available water resources within the Integrated Vaal River System (IVRS) under future climate change.

 

Gauteng may be severely compromised

The IVRS, a large, complex water system comprising water resources of different river basins, and several mega-dams within, has been constructed to secure the water supply of the Gauteng province, the economic hub in South Africa. 

According to the researchers, Southern Africa is a water-stress hot spot and is projected to become significantly warmer and likely also drier under global climate change, increasing the risk of devastating hydrological droughts. The IVRS, Dr Biskop told the attendees, is vulnerable to the occurrence of multi-year droughts as experienced between 2012 and in 2016. The alarming low water level of the Vaal dam after a period of drought of 2015/16 provided early warning that water security of Gauteng may be directly and severely compromised in a changing climate. Potential evapotranspiration will increase as a consequence of strong regional warming.

 

Answering questions

“There is consequently a high risk that the water demand in the Gauteng province will exceed available water resources within the IVRS under future climate change. This raises the question if under ongoing climate change the natural hydrological system (without considering water transfers between dam catchments) can maintain dam levels in South Africa’s eastern mega-dam region, and particularly within the Lesotho Highlands,” explained Dr Biskop. 

 “To answer this question, the aim of our study is to quantify future water balance changes of several dams under changing climate conditions using the Jena Adaptable Modelling System (JAMS), a software framework for component-based development of environmental models. For this purpose, we build process-based hydrological models for several dam catchments.”

She said an ensemble of high-resolution regional climate change projections is subsequently used as forcing, to generate future hydrological projections. The analysis of projected changes in hydrological system components (precipitation, evapotranspiration, run-off) provides probabilistic estimates of the occurrence of a regional climate change tipping point - when the natural water supply can no longer achieve the full storage capacity of the mega-dams which supply the Gauteng region.

 

Working to prevent Day Zero 

According to Prof Engelbrecht, they are working with the City of Johannesburg, the National Department of Water and Sanitation and Rand Water on this project. Their hope for this research is to create awareness in order to try and prevent Day Zero from happening. They also hope to assist these role players in building resilience and help them prepare for Day Zero. Their work with the City of Johannesburg also includes helping the city to reduce water wastage and change water users’ behaviour as well as formulating a disaster management plan should Day Zero happen. 

The Southern African Mountain Conference (SAMC) series is unique as it seeks to integrate science, policy and practitioner sectors for sustainable interventions in southern African mountains. SAMC events are conceptualised by the Afromontane Research Unit (ARU) of the University of the Free State (UFS), the African Mountain Research Foundation (AMRF) and Global Mountain Safeguard Research (GLOMOS), a joint initiative between Eurac Research and the UNU Institute for Environment and Human Security. These three organisations form the Primary Partners, with the SAMC series being implemented by The Peaks Foundation (a non-profit company). SAMC2025 is being held under the patronage of UNESCO.

News Archive

UFS study finds initiation does not build character
2015-06-24

Photo: Canva.com

Initiation at schools and school hostels does not build character or loyalty. On the contrary, it is a violation of human dignity and the rights of children.

This is the opinion of researchers from the University of the Free State’s Faculty of Education after an exploratory study of initiation practices in schools.

Although the use of initiation in schools and school hostels is forbidden by the Regulations to Prohibit Initiation Practices in Schools, the study found that this practice is still widely evident in schools. The study also found that, in some cases, teachers and/or principals take part.

In the study, led by Dr Kevin Teise from the Faculty of Education, it was found that physical deeds and even violence and emotional degradation were inflicted under the guise of ‘initiation’.

The study was discussed recently during a panel discussion between the Faculty of Education, the Faculty of Law, and the Institute for Reconciliation and Social Justice.

The ‘initiation activities’ that take place during school hours ranged from carrying senior learners’ bags or doing other favours for them, handing over their food or food money, doing senior learners’ homework, and looking down when they speak to senior learners.

In school hostels, it was found that learners were expected to do humiliating things, and were also subjected to physical demands and even violence. Learners pointed out that they were smeared and beaten, their heads pushed into toilets, they had to bath or shower in cold water, they had to eat strange things, and they were prevented from sleeping.

Dr Teise says initiation practices are a general phenomenon in the schools and school hostels that took part in the investigation. Newcomers were subjected to silly and innocent practices, but also to physically and emotionally degrading, and even dangerous ones, before and after school, and during breaks and sports- and cultural gatherings.

“The study’s findings give every indication that the constitutional principles on which the policy document, Regulations to Prohibit Initiation Practices in Schools, is modelled, are not being put into practice and respected at these schools. Policy documents and school rules are pointless if learners, old pupils, parents, teachers, and the broad community consider initiation an acceptable behaviour that is, ostensibly, an inseparable part of school or hostel tradition and of the maturation and/or team-building processes.”

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