Sekuyiminyaka engaphezu kweshumi sihlinzeka ngemithombo yekhwalithi ephezulu yezigayo ezinkulu zensimbi zangaphandle.Isibonelo, izitshalo ezinkulu zensimbi eNingizimu Afrika, eMpumalanga Yurophu, e-Europe Ephakathi, eMpumalanga Ephakathi, e-Iran, eRussia, njll., ziqashelwa ngazwi linye ngamakhasimende.