003 Crocodile West

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NATIONAL WATER RESOURCE STRATEGY SOUTH AFRICA’S WATER SITUATION AND STRATEGIES TO BALANCE SUPPLY AND DEMAND CROCODILE (WEST) AND MARICO WMA

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WMA 3: Crocodile (West) and Marico - Rainfall and Evaporation

Slide3: 

WMA 3: Crocodile (West) and Marico - Base Map

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WMA 3: Crocodile (West) and Marico - Land Use

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WMA 3: Crocodile (West) and Marico - Sectoral Water Requirements (2000)

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

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WMA 3: Crocodile (West) and Marico - Water Availability (2000)

Slide8: 

WMA 3: Crocodile (West) and Marico - Water Reconciliation (2000)

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WMA 3: Crocodile (West) and Marico - Population scenarios

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WMA 3: Crocodile (West) and Marico - Water Reconciliation (future)

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WMA 3: Crocodile (West) and Marico Groundwater Large dolomitic aquifers along most of the southern part of the WMA from Pretoria to Mafikeng Large quantities of water are abstracted from these aquifers, mainly for urban and irrigation use Sandy aquifers along the lower Crocodile River Over-exploitation of groundwater is experienced in the vicinity of Mafikeng Some aquifers are shared by South Africa and Botswana

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WMA 3: Crocodile (West) and Marico Water quality In the natural state: quality of surface water in the WMA generally good Large quantities of effluent discharged into the rivers have a major impact on the water quality The Jukskei River is probably the river most affected by urbanisation and industrial activity in the country Severe eutrophication problems at dams Groundwater quality generally of a very high standard high fluoride and iron concentrations in the east Where feasible, special management techniques to improve water quality to appropriate standards

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WMA 3: Crocodile (West) and Marico Key issues Already full utilisation of local water Continued strong growth in the Pretoria-Johannesburg and Platinum Belt region with accompanying increase in water requirements Optimal balance required between re-use of return flows and transfer of water Management of water quality in the Crocodile River catchment impacted by growing urbanisation and return flows

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WMA 3: Crocodile (West) and Marico Key issues (2) Current over-commitment of water resources in Upper Molopo sub-area together with provision for future growth at Mafikeng Impacts of implementation of the ecological Reserve on water balances in the Elands, Marico and Upper Molopo River catchments Quantity and quality of streamflow reaching the Limpopo River - may be relevant to the management of the Limpopo River jointly with other basin countries

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WMA 3: Crocodile (West) and Marico Water resources under control of the Minister Transfer of water between WMAs to neighbouring countries Surplus return flows to be reserved for re-use developments in other areas augmenting supplies in neighbouring WMAs Quantity and quality of water discharged to the Limpopo River