Review and Update of Hydrogeological Map Series and Information Brochure Polokwane Area, South Africa
The significance of groundwater in South Africa has increased over the years. However, there is limited comprehensive and accessible information available about this resource. To bridge this gap, the Department of Water and Sanitation (DWS) initially created a series of twenty-three 1:500,000-scale hydrogeological maps, which included the Polokwane map. These maps were designed to provide planners, decision-makers, and users with synthesized and disseminated groundwater data. Since its completion in 2002, the Polokwane map has not been updated, emphasizing the need for a refreshed and detailed assessment. The Department of Water and Sanitation in South Africa is updating the Hydrogeological Map Series and the Information Brochure of the Polokwane Area. This project is being funded by the Global Environment Facility and the Multi-Donor Trust Fund Cooperation in International Waters in Africa through the World Bank Group. The SADC Groundwater Management Institute is providing technical support for the project.
Why is the Update Essential?
The revision of the Polokwane hydrogeological map is significant for several reasons. Over the past 22 years, significant progress has been made in the spatial distribution of monitoring points and associated groundwater data. The 2002 map, produced at a scale of 1:500,000, may have overlooked crucial details. Consequently, an updated map series will be generated using a more precise 1:250,000 scale, dividing the Polokwane area into four detailed map series. This heightened resolution will advance our comprehension of groundwater dynamics and facilitate more informed decision-making.
Benefits of the Updated Map
The updated hydrogeological map will provide a wealth of new data, including groundwater yield, new yield classes (exceeding 10 litres per second), groundwater uses, average depth to groundwater levels, and rainfall distribution. This comprehensive information will support groundwater allocation, identify monitoring gaps, and facilitate sustainable groundwater management within the Polokwane area.
Addressing Key Challenges
The updated map will address several critical challenges by incorporating the latest data on groundwater occurrences and yields. It will improve groundwater allocations and decision-making processes, ultimately contributing to the sustainable management of this vital resource.
Stakeholder Engagement
The updated hydrogeological map will be a valuable tool for a wide range of stakeholders, including academics, researchers, planners, consultants, and government agencies. It will offer new insights into groundwater occurrence and support various planning and development initiatives.
Community Impact
The updated map will significantly benefit communities in the Polokwane area, many of which rely on groundwater for their daily needs and socio-economic development. The map will also provide crucial information on average groundwater levels, borehole yields, and groundwater quality, empowering communities to make informed water use and planning decisions.
Project Beneficiaries and Partners
The Ministry of Water and Sanitation, responsible for managing South Africa's water resources, is the primary beneficiary of this project. Other beneficiaries include hydrogeological consultants, national and local government departments, municipalities, water boards, academics, property developers, and decision-makers. The project is being implemented in collaboration with VSA Rebotile Metsi Consulting, the appointed consultant to execute the project on behalf of the Department of Water and Sanitation.
Methodology and Future Applications
The methodology used to update the Polokwane hydrogeological map and information brochure will be meticulously documented and archived. This will serve as a blueprint for updating other hydrogeological maps across South Africa, ensuring that state officials are well-equipped to continue this essential work.
The Southern African Development Community Groundwater Management Institute (SADC-GMI) is dedicated to working with its member states to carry out projects that deliver current and thorough information and ensure the sustainable management of groundwater resources. Its efforts help secure water supplies for future generations and provide essential support for community livelihoods in the Polokwane area.