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The City of Cape Town’s Road Infrastructure Management Department in collaboration with the Water and Sanitation Department, has done extensive work to the detention pond adjacent to Plantation Road, on the border of Wallacedene and Belmont Park, to mitigate severe future flooding in the area. The work was undertaken after an unforeseen blockage in the outlet system caused the pond to overflow, leaving several houses flooded in Belmont Park last year.
‘We have ponds like this one across the city and their purpose is to control water flow and make the surrounding areas safe. Last year, when we were informed about the flooding, sandbags were provided to residents as a temporary measure, while officials started working on a more permanent solution. The officials have been working on this pond since the incident. I deliberately chose to be here a day after Cape Town experienced severe floods, to see for myself the fruits of their labour and ensure that the pond is secure and functions optimally,’ said the City’s Mayoral Committee Member for Urban Mobility, Councillor Rob Quintas.
The detention pond adjacent to Plantation Road was constructed about 26 years ago to collect and detain stormwater during a flood situation and to let the water out within the 48 hours after the flood, once it is safe to do so. The pond is designed to accommodate a 1:50 year flood event. A normal blockage will clear itself due to the pressure of the water, however, an unknown and unforeseen blockage in the 300mm diameter outlet resulted in the pond overflowing its embankment on 28 June 2021.
Numerous interventions were undertaken to prevent, as far as possible, a reoccurrence of the situation this winter.
Work done to date includes:
Furthermore, the City intends to:
‘The driving force behind all our activities and interventions is the intention to keep on improving our service delivery, and the safety and wellbeing of residents. The reconstructed pond will significantly reduce run-off and is now able to withstand extreme weather conditions. Belmont Park residents can rest assured that we have done all we can to reduce the risk of flooding in their area.
‘We will continue with our regular maintenance and upgrading, where necessary, to ensure that the heavy rains flow safely. I must also appeal to all to please refrain from dumping litter and objects in our stormwater system. Last year’s incident demonstrated the devastating impact illegal dumping has on surrounding communities,’ said Councillor Quintas.
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