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e r 2 - Umgeni Water

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| <strong>Water</strong> ResourcesChapterChapter 7.<strong>Water</strong>Resources7.1<strong>Water</strong>r Availabilityy<strong>Umgeni</strong><strong>Water</strong>sources water primarily fromten impoundments on three major water resourcee systemsnamely,the MgeniSystemm (Mooi andMgenirivers), the North Coasst System(Mdloti River) andthee Southh Coastt System(Nungwane, Mzimmayi and Mzintorivers). Twofurtherr impoundmentsaree owned and managedby <strong>Umgeni</strong> <strong>Water</strong>,which are no longer usedd for water supply purposes. Table 7.1 shows the t capacitiesof these resorources.Table 7.1: Capacity of WateWer Resource SystemssSystemMgeniCatchmentMooiMgeniImpoundmentMearnsWeirMidmar DamMgeniAlbertFallss DamMgeniNagle DammMgeniInandaDammMlaziShongweni Dam Msunduzi, MgeniHenleyDam Total forCentral SystemNorthCoastMdlotiHazelmeree DamTotal forNorthCoast SysttemmSouthCoastNungwane,LovuMzimayiNungwanee DamE J Smith DammMzintoUmzinto DamTotal forSouthCoast SysttemmOtherIxopo, MkommaziIxopo DammTotal for<strong>Umgeni</strong> <strong>Water</strong> Systems# notutilisedforwater suppplyOwnerDWADWADWAUWWDWAUWWUWWDWAUWWUguu DMUguu DMUWWManagerUWUWUWUWUWUWUWUWUWUWUWUWGross CapaCacityy (million m 3 )5.1235.4290.124.6251.63.81.5812.117.917.92.20.90.43.50.6834.17.1.11Mgeni SystemThe MgeniSystemm comprises of fourdams on theMgeniRiver,namelyy MidmarDam, Albert FallsFs Dam,NagleDamandInandaDam.It is augmented by the Mooi-Mgeni TranTnsfer Schemee (Phase 1) whichwh consistsof thee MearnsWeironthe Mooi River,, the MearnsPumpingStation witha maximumtransfer capacityy off 3.22 cubicmetres persecondanda raww water transferpipeline thatt discharges intoo the MpoMfana Stream,whichh flowsinto theLionsRiver and theninto the MgeniRiver upstream of Midmarr Dam.The system currently hasa yield(att a 99 % levelofassurance)of 334. .5 millioon cubic metrmres perannumm att Inandaa Dam.7.1.2NorthCoastSystemThe NorthCoast Systemm comprises the Hazelmeree Damon thee Mdloti River, whichh serves ass a dual-purposedam,providing water for bothh potable and a irrigationrequirements. Thedamm has a yield(at a 988 % level of assurance)of19.0millioncubicmetres per annumavailable fortreatmentt and potablee usage, providedd the reserveallocationisnotimposed.SinceJuly 2007<strong>Umgeni</strong><strong>Water</strong>has alsobeen abstractingg water fromm the MvoMti River ass partofmanaging the Mvoti<strong>Water</strong>Worksandd the supply of bulkpotable water too thee townof KwaDukuza on behalf of theiLembeDistrict Municipality.7.1.3SouthCoast SystemThe SouthCoast Systemm comprises a number of interlinkedoperational entities. <strong>Water</strong> resources for this area areobtained fromthe NunngwaneDamonn the Nungwanee Riverr (a tributaryto thee Lovuu River)), theMzintoo andEJ Smithdamsonn the MzinMnto andd Mzimayiriversrespectively,, and a sand abstraction systemon theMtwalumeRiver. This systemm issubstantiallyy augmentedby thee Mgeni systemvia thee Southh Coastt AugmentationPipelineand the SouthCoastPipeline.<strong>Umgeni</strong> <strong>Water</strong> Five-YearBusinessPlan | 2011/20122 too 2015/201629Page 2

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