<prompt> Bhala okuqhubekayo kwalesi sigaba - Ngawo-1980 ukwakhiwa kweDamu laseWivenhoe kwaletha umsebenzi omusha nemindeni endaweni. Ngo-2011, leli dolobha laphinde lathinteka kakhulu yizikhukhula  <response>: , izindlu eziyikhulu namashumi amabili nambili zagcwala amanzi eFernvale nezingamashumi amabili nanhlanu eVernor. Izakhamuzi zachaza nangenqwaba yezinyoka ezikhukhuleni. 