Opolopo awon eja elerindodo naa ti di ravines, eyi ti o le je opolopo tabi ogoroorun ese jin.. 
Sterkphile dam, tí ó wà ní ìta ìlú Harrismith, ní ìpínlẹ̀ ọfẹ, agbègbè ti South Africa, jẹ́ apákan ti Tuge-v-AalA Water Project àti Dradoiberg Puùn Storage scheme, àti pé ó wà lórí Nuwers Nori, Ìgbìmọ̀ ti Ọ̀dọ́ Wilge .. 