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

2. WMA 17: Olifants/Doorn - Rainfall and Evaporation

3. WMA 17: Olifants/Doorn - Base Map

4. WMA 17: Olifants/Doorn - Land Use

5. WMA 17: Olifants/Doorn - Sectoral Water Requirements (2000)

6. Sectoral contributions to the economy (1997) Contribution Agriculture Mining Manufacturing Electricity Construction Trade Transport Finance Government Other Community 0 % 20 % 50 % 40 % 30 % 10 % National Olifants/Doorn WMA

7. WMA 17: Olifants/Doorn - Water Availability (2000)

8. WMA 17: Olifants/Doorn - Water Reconciliation (2000)

9. WMA 17: Olifants/Doorn - Population scenarios

10. WMA 17: Olifants/Doorn - Water Reconciliation (future)

11. WMA 17: Olifants/Doorn - Groundwater Groundwater is an important component of the water resources in the Olifants/Doring WMA Groundwater is often the main or only source of water Groundwater is already highly utilised in the WMA In most areas little potential for further development Some localised over-exploitation of groundwater Significant quantities of water believed to be abstractable from the deep Table Mountain Group aquifer Particularly important that groundwater table at abstraction along the coast needs to be carefully managed to prevent intrusion of seawater

12. WMA 17: Olifants/Doorn - Water quality In the natural state water is of high quality Surface runoff from drier parts is typical of high salinity As result of mixing of waters from Groot, Doring and Olifants Rivers, a unique salinity regime exists Irrigation return flows adds to the salinity levels Quality of groundwater varies greatly over the WMA At several locations water is too mineralised for any direct use and desalination is required In general, groundwater of good quality - becomes highly mineralised (brackish to saline) in the drier regions

13. WMA 17: Olifants/Doorn - Key issues Already full utilisation of available resources Shortages experienced in the Olifants sub-area - will be exacerbated by the implementation of the Reserve Over-exploitation of groundwater in Sandveld sub-area Potential with respect to the further development of surface resources Possible exploitation of Table Mountain Group aquifers An unique salinity regime exists in the Olifants/Doring River system as result of the mixing of waters from Groot, Doring and Olifants Rivers

14. WMA 17: Olifants/Doorn - Key issues (2) Irrigation return flows adds to the salinity levels in the lower Olifants River Estuary. Ecological importance of the Olifants/Doring river system and of the estuary A need for socio-economic development in the WMA with irrigation probably offering the best opportunity It therefore requires appropriate balance between further water resource development and conservation

15. WMA 17: Olifants/Doorn Water resources under control of the Minister Transfer in of water from Breede WMA to the Olifants/Doring WMA to the Inverdoorn canal for irrigation purposes