Nelson Mandela Bay dam levels dropping faster in lockdown – South Africa As the number of confirmed Covid-19 cases increase in Nelson Mandela Bay, the dam levels continue to decrease â sitting at a combined level of 23.77% on Monday. Three days before the forced lockdown on March 26, the combined level of the cityâs four major storage dams was 25.05%. Infrastructure and engineering political head Andile Lungisa said the city was facing two disasters, with the consequences of both dire for the city, reports HeraldLIVE. (LINK). Nelson Mandela Bay dam levels dropping faster in lockdown – South AfricaHIWI042020-04-11T15:40:59+02:00