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

2 Presentation Overview 1.National Water Resource Infrastructure 2.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) Scheme NameActivitiesBudget (R 000)Challenges Qamata12 balancing dams, main canal, pipeline Land ownership NcoraRefurb 6 balancing dams, canal, pipeline Land ownership ShilohBalancing dam, pump station Partnership between Trustees, Commercial Farmers, Dept of Agriculture TyefuBulk pipeline5 000 KeiskammahoekPumpstation, valves ZanyokwePumpstation, valves1 000 Fish-SundaysReal time operating syst6 000Training Lower-SundaysBalancing dam, fencing14 000Drowning in canals GamtoosMain conveyance syst High risk TOTAL

7 2.2 LIMPOPO (Tzaneen) Scheme NameActivitiesBudget (R 000) Challenges Nzhelele CanalsReplace concrete pipes Demand exceed supply, Drought Albasini CanalsRelining canal66 000Demand exceed supply Middle Letaba systRehab canal44 000Demand exceed supply TOTAL

8 2.3 North West (Hartbeespoort) Scheme NameActivitiesBudget (R 000) Challenges Hartbeespoort Dam Canal Rehabilitate canal10 000Water losses Roodeplaat dam canals Rehabilitate canal7 000Algae and water grass Buffelspoortdam canals Rehabilitate canal -Informal settlements, vandalism. Water use conversion to industrial Marico Bosveld GWS Rehabilitate canal5 000Cleaning canals TOTAL

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