GRA2: Average Groundwater Exploitation Potential
Groundwater Resource Assessment Phase 2, 2005. Average of Groundwater Exploitation Potential for wet and dry conditions. Units are m3/km2/a - grid with 1kmX1km cells
   
GRA2: Utilisable Groundwater Exploitation Potential in dry conditions
Groundwater Resource Assessment Phase 2, 2005. Groundwater available in dry conditions. Units are m3/km2/a - grid with 1kmX1km cells
   
GRA2: Depth to groundwater (mbgl)
Groundwater Resource Assessment Phase 2, 2005. 1x1km waterlevel grid (mbgl)
   
Aquifer type and yield (Groundwater classification and borehole yield)
Amalgamation of 1:500 000 Hydrogeological Map series, giving a country-wide extent of aquifer type (groundwater classification) and expected borehole yield. NGDB data used primarily.
   
Aquifer type and yield (Groundwater classification and borehole yield)
Amalgamation of 1:500 000 Hydrogeological Map series, giving a country-wide extent of aquifer type (groundwater classification) and expected borehole yield. NGDB data used primarily.
   
Recharge to the Groundwater Store and Baseflow
This dataset contains recharge to the groundwater store and baseflow in South Africa (SA). Baseflows, consist of contributions to runoff from the intermediate/groundwater store which had been previously recharged. Reliable assessments of exploitable groundwater resources are essential, particularly for sustainable development in semi-arid areas, which are more heavily dependent on groundwater than the moister areas. In the distribution patterns of mean annual baseflow, high values occur in the eastern and southwestern areas of SA and low values in the centre-west, many more unexpected highs and lows are present.
   
KZNSCP: Freshwater Systematic Conservation Plan (Planning Units)
Freshwater Systematic Conservation Plan 2007. This is the freshwaterplanning unit surface for the 2007 Freshwater Systematic ConservationPlan (FSCP) run by Dr. Nick Riversmore in 2007 using MARXAN. Within theattribute table, the field {status} highlights the status of the planning unitsrelative to their conservation importance.
   
Electrical conductivity of groundwater
Amalgamation of Hydrogeological Map series, giving an interpolated country-wide extent of the Electrical Conductivity of groundwater .
   
Groundwater Vulnerability
Groundwater vulnerability to contamination dateset produced using the DRASTIC method (which considers depth to groundwater, recharge, aquifer media, soil type, topography, impact of the vadose zone, and conductivity. This dataset can be used to give a broad indication of relative vulnerability to non-point source pollution.
   
GRA2: Groundwater Recharge (mm/a)
Groundwater Resource Assessment Phase 2, 2005. Recharge depth (mm/a) 1x1km grid. Recharge figures are based on the chloride mass-balance method. It should be noted that the coverage of chloride measurements in rainfall in South Africa is incomplete, and that the method has inherent errors.
   
GRA2: Depth to groundwater (mamsl)
Groundwater Resource Assessment Phase 2, 2005. 1x1km waterlevel grid (mamsl)
   
Highest Annual Baseflow In 10 Years (mm)
This dataset contains recharge to the groundwater store and baseflow in South Africa (SA). Baseflows, consist of contributions to runoff from the intermediate/groundwater store which had been previously recharged. Reliable assessments of exploitable groundwater resources are essential, particularly for sustainable development in semi-arid areas, which are more heavily dependent on groundwater than the moister areas. In the distribution patterns of mean annual baseflow, high values occur in the eastern and southwestern areas of SA and low values in the centre-west, many more unexpected highs and lows are present.
   
Renosterveld Upland-Lowland gradients