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Strategy For Each Water Demand Centre

Strategy For Each Water Demand Centre. The Crocodile River Catchment. Nelspruit. Areas Included: Mataffin Agricultural College Matumi Golf Course. Water Balance For Nelspruit Without Interventions . Nelspruit Domestic Water Use. Currently: 468 litres per capita per day

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Strategy For Each Water Demand Centre

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  1. Strategy For Each Water Demand Centre

  2. The Crocodile River Catchment

  3. Nelspruit Areas Included: • Mataffin • Agricultural College • Matumi Golf Course

  4. Water Balance For Nelspruit Without Interventions

  5. Nelspruit Domestic Water Use Currently: 468 litres per capita per day Far above the norm! More reasonable use: 250 litres/c/d + 30% losses = 325 litres/c/d This is approximately 30% less than current domestic use!

  6. Water Balance For Nelspruit with 250 litres/c/d for domestic use Current Reasonable Norm

  7. Intervention Options For Nelspruit

  8. Water Balance For Nelspruit With Interventions – No Dam IAPs Removal Resource

  9. Water Balance For Nelspruit With Interventions & Boschjeskop Dam Boschjeskop Dam IAPs Removal Resource

  10. Water Balance For Nelspruit With Interventions & Boschjeskop Dam Boschjeskop Dam IAPs Removal Resource

  11. Conclusions For Nelspruit • Low growth water demand scenario can be fully satisfied over the entire planning horizon without a dam • 15% WC/WDM saving for Nelspruit is very conservative. Current use is 468 litres/capita/day. Nelspruit should be able to save 30% • With 30% WC/WDM saving, the high growth water demand scenario can be satisfied almost over the entire planning horizon • Boschjeskop Dam or alternative dam will be more than adequate but should be postponed as far in future as possible

  12. Urgent Actions Required • Development of the WC/WDM plan and implementation strategy • The current IAP removal programme should be checked and if necessary, the focus areas should be changed and the programme accelerated. • Borehole siting for southern area of Nelspruit

  13. Towards Final Strategy – Further Information Required • Extent of IAP infestation upstream of Kwena Dam. • Extent of unlawful irrigation water use in Crocodile River Catchment. (Validation and Verification process of ICMA) • Area of fallow irrigation lands with water entitlements with no or limited risks of farm workers losing jobs which can possibly be earmarked for water trading.

  14. White River Areas Included: • White River Country Estate • Rocky Drift • Phumulani

  15. Water Balance For White River Without Interventions

  16. White RiverDomestic Water Use Currently: 574litres per capita per day Far above the norm! More reasonable use: 250 litres/c/d + 30% losses = 325 litres/c/d This is approximately 43% less than current domestic use!

  17. Water Balance For White River With 250 l/c/d For Domestic Use Interventions Current Reasonable Norm

  18. Intervention Options For White River

  19. Water Balance For White River With 25% WC/WDM Savings

  20. Conclusions For White River • Water requirements can be met with the available water resources throughout the entire planning period • WC/WDM should be implemented despite the availability of sufficient water to this area as the water is required elsewhere • No further interventions required for White River

  21. Urgent Actions Required • The tariff structure of White River needs to be revised. There should be a sliding scale tariff – the more water a user uses the higher the tariff becomes. Currently it is just the opposite in White River.

  22. Towards Final Strategy – Further Information Required • Different literature sources give different population figures and water demands. A physical house count has been done for this study. Consensus must be sought on what the population for this area should be.

  23. Karino - Plaston Corridor Areas Included: • Areas in Nsikazi South ( e.g. Tekwane North, Mamelodi and Emoyeni) • Plaston • Karino Town

  24. Water Balance For Karino - Plaston Without Interventions

  25. Karino-PlastonDomestic Water Use Currently: 814litres per capita per day Far above the norm! More reasonable use: 250 litres/c/d + 30% losses = 325 litres/c/d This is approximately 60% less than current domestic use!

  26. Water Balance For Karino - Plaston Without Interventions Current trend Reasonable norm

  27. Intervention Options For Karino - Plaston

  28. Water Balance For Karino – Plaston With Interventions IAPs Removal System Operating Rules Primkop Surplus White River Resource

  29. Conclusions For Karino - Plaston • The growth in water demand is very steep • The current water use in Karino-Plaston Corridor is far above the norm • A water balance can be achieved with only the surplus from White River

  30. Urgent Actions Required • Correct and stabilise water supply abstraction and distribution system. • Develop a WC/WDM plan and implementation strategy for the area. The effect of implementation will only be observed once the water supply system is stable. • Initiate a WC/WDM awareness launch asap. • Develop system operating rules for PrimkopDam.

  31. Towards Final Strategy – Further Information Required • Confirm White River town water demand and ascertain that the White River surplus will be available.

  32. Nsikazi South Areas Included: • Gutshwa • Kabokweni • Dwaleni • Clau-Clau • Zwelisha • Msogwaba • Spelanyane • Luphisi • Entokozweni • Kanyamazane • Tekwane South • Mpakeni

  33. Water Balance For Nsikazi South Without Interventions

  34. Karino-PlastonDomestic Water Use Currently: 263litres per capita per day Too high! More reasonable use: 120litres/c/d + 30% losses = 156litres/c/d This is approximately 41% less than current domestic use!

  35. Water Balance For Nsikazi South With 120 litres/c/d For Domestic Use Interventions Current trend Accepted Norm

  36. Intervention Options For NsikaziSouth

  37. Water Balance For Nsikazi South With Interventions Surplus from Nelspruit Including surplus from Boschjeskop Dam IAP Removals Groundwater Surplus from K-P Resource

  38. Conclusions For Nsikazi South • WC/WDM should be implemented but the effect will only be observed once the water supply and distribution system has been stabilised. • MLM is currently over-abstracting from the Crocodile River for Nsikazi South. This could have a detrimental effect on the aquatic environment or downstream users. • MLM will have to reduce their abstraction to the allowed licence value of 18.3 million mᶟ/a or source additional water through temporary trading. • This may result in water restrictions for the demand centre for the next 7-8 years. • Once Boschjeskop Dam ( or any other dam option) comes into operation, Nsikazi South will have adequate water.

  39. Urgent Actions Required • Correct and stabilise water supply abstraction and distribution system • Develop a WC/WDM plan and implementation strategy for the areaand initiate a WC/WDM awareness launch asap. • The current IAP removal programme should be checked and if necessary, the focus areas should be changed and the programme accelerated. • Groundwater can be developed to contribute to overcome the short term water shortages

  40. Towards Final Strategy – Further Information Required • Area of fallow irrigation lands with water entitlements with no or limited risks of farm workers losing jobs which can possibly be earmarked for water trading. • The preferred dam option needs to be selectedand implementation considered by means of a feasibility study

  41. Matsulu

  42. Water Balance For Matsulu – Without Any Interventions

  43. MatsuluDomestic Water Use Currently: 353litres per capita per day Too high! More reasonable use: 120litres/c/d + 30% losses = 156litres/c/d This is approximately 56% less than current domestic use!

  44. Water Balance For Matsulu With 120 litres/c/d For Domestic Use Current trend Accepted Norm Resource

  45. Intervention Options For Matsulu

  46. Water Balance For Matsulu – With WC/WDM, GW & Irrigation entitlements Surplus from Nsikazi South Water Trading (Temporary) Groundwater Resource

  47. Conclusions For Matsulu • MLM is currently over abstracting from the Crocodile River. • WC/WDM and groundwater development will make a difference but will not achieve the required water balance. • MLM will have to look at water trading on a temporary basis • If the dam option is opted for, Matsulu will also share in this benefit but then the water balance is reached much later. • Water restrictions might have to be implemented during the first number of years if MLM fails with water trading

  48. Urgent Actions Required • WC/WDM need to be implemented. A WC/WDM plan needs to be developed and implemented as a matter of urgency. 25% saving should be the target as Matsulu residents currently receive too much water. • Borehole siting should be done with latest technology (e.g. radon gas emanation)

  49. Towards Final Strategy – Further Information Required • Area of fallow irrigation lands with water entitlements with no or limited risks of farm workers losing jobs which can possibly be earmarked for water trading. • Rainwater harvesting potential.

  50. The Sabie River Catchment

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