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NATIONAL WATER RESOURCE STRATEGY SOUTH AFRICA’S WATER SITUATION AND STRATEGIES TO BALANCE SUPPLY AND DEMAND OLIFANTS WMA

NATIONAL WATER RESOURCE STRATEGY SOUTH AFRICA’S WATER SITUATION AND STRATEGIES TO BALANCE SUPPLY AND DEMAND OLIFANTS WMA. WMA 4 Olifants - Rainfall and Evaporation. WMA 4 Olifants - Base Map. WMA 4 Olifants - Land Use. WMA 4 Olifants - Sectoral Water Requirements (2000).

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NATIONAL WATER RESOURCE STRATEGY SOUTH AFRICA’S WATER SITUATION AND STRATEGIES TO BALANCE SUPPLY AND DEMAND OLIFANTS WMA

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  1. NATIONAL WATER RESOURCE STRATEGY SOUTH AFRICA’S WATER SITUATION AND STRATEGIES TO BALANCE SUPPLY AND DEMAND OLIFANTS WMA

  2. WMA 4 Olifants - Rainfall and Evaporation

  3. WMA 4 Olifants - Base Map

  4. WMA 4 Olifants - Land Use

  5. WMA 4 Olifants - Sectoral Water Requirements (2000)

  6. Sectoral contributions to the economy (1997) 30 % National Olifants WMA 20 % Contribution 10 % 0 % Other Trade Mining Finance Transport Electricity Agriculture Community Government Construction Manufacturing

  7. WMA 4 Olifants - Water Availability (2000)

  8. WMA 4 Olifants - Water Reconciliation (2000)

  9. WMA 4 Olifants - Population scenarios

  10. WMA 4 Olifants - Water Reconciliation (future)

  11. WMA 4 OlifantsGroundwater • Large quantities of groundwater abstracted for rural water supplies throughout the WMA • Large quantities abstracted for irrigation in the Springbok Flats area • Substantial potential for increased groundwater utilisation on the Nebo Plateau • Dolomitic formationsextend along the Blyde River valley • Strong inter-connectivity between groundwater in the dolomitic aquifers and surface flow - further exploitation expected to directly impact on surface water flows

  12. WMA 4 Olifants Water quality • In the natural state, the quality of surface water is high • Water quality highly impacted upon by coal mining • Water quality problems experienced due to the discharge of mine effluent in the Phalaborwa area • Quality of groundwater naturally of high standard - high iron and fluoride concentrations found in some areas • In the Kwa-Ndebele areagroundwater quality is poor • Concern about the pollution of groundwater with acidic mine leachate in the coal mining areas (Upper Olifants) • Discharge of mine effluent into the Selati River near Phalaborwa poses water quality problems downstream in the Kruger National Park

  13. WMA 4 Olifants Key issues • Full utilisation (and in some areas over-commitment) of water resources as currently developed and available • Substantial deficits will result from the implementation of the ecological component of the Reserve • Strong growth expected in the mining sector along the Bushveld Igneous Complex • Continued urban and industrial growth at Witbank, Middleburg and Phalaborwa • Need for increased transfer of water into the WMA for power generation

  14. WMA 4 Olifants Key issues (2) • Water quality management in the Upper Olifants in particular, as well as related to mining activities elsewhere in the WMA • Ensuring adequate availability of water of appropriate quality with respect to the ecological requirements in the Kruger National Park • Improved measurement and monitoring of irrigation abstractions and return flows • Possible impacts of water resource management in the Olifants WMA on Mozambique and honouring of all obligations with respect to Mozambique

  15. WMA 4 Olifants Water resources under control of the Minister • Transfers into WMA • Transfers out of WMA • Development of dam at Rooipoort • Currently no quantitative agreement with respect to releases to Mozambique • no future water resource development or management options, which could have negative impacts on Mozambique, should be implemented without prior agreement between SA and Mozambique at national level

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