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DWA IRRIGATION SCHEMES

This presentation provides an overview of the national water resource infrastructure in South Africa, focusing on irrigation schemes. It highlights the spatial location of assets and the role of Water User Associations in operating and maintaining these schemes. The presentation also addresses the challenges faced by irrigation schemes, including the need for major rehabilitation work and inadequate funding.

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DWA IRRIGATION SCHEMES

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  1. DWA IRRIGATION SCHEMES SELECT COM ON ENVIRON AFFAIRS 20 October 2009 By: Lehasa Moloi (Pr.Eng)

  2. Presentation Overview • National Water Resource Infrastructure • Irrigation Schemes 2.1 Southern Cluster (EC,WC) 2.2 Limpopo (Tzaneen) 2.3 Northwest (Hartbeespoort) 2.4 Other Irrigation Schemes 3. Conclusion 2

  3. 1. National Water Resources Infrastructure • The NWRI Branch in DWA develops new water resources infrastructure and operates and maintains existing assets for the storage and supply of raw water. • Existing infrastructure is grouped into four clusters 3

  4. Spatial location of assets 4

  5. 2. Irrigation Schemes • Most irrigation schemes are operated and maintained by Water User Associations (WUAs)/Irrigation Boards • DWA provides capital for major refurbishment or rehabilitation as the schemes are still owned by the Department • DWA operated schemes are for multi–users: domestic/industrial and irrigation • Irrigation water released from dams into rivers 5

  6. 2.1 Southern Cluster (EC, WC) 6

  7. 2.2 LIMPOPO (Tzaneen) 7

  8. 2.3 North West (Hartbeespoort) 8

  9. 2.4 Other Irrigation schemes • Skoonspruit and Mooirivier irrigation schemes - Potch • Koppies Irrigation scheme – dysfunctional • Schemes operated by WUAs: Vaalharts, Orange Riet, Sand Vet, LORWUA, Sundays River Valley, etc 9

  10. 3. Conclusion • Most irrigation schemes have reached end of their useful lives • Major rehabilitation work required • Water tariffs not adequate to fund capital rehabilitation of schemes • Water losses from canals 10

  11. Thank you 11

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