The Mossel Bay Municipality has proposed the installation of geotextile sandbags as an interim emergency measure to stabilise the dune at Diaz Beach and reduce the immediate risk of further collapse.
According to the municipality, the measure is intended to prevent damage to, or the collapse of, properties and infrastructure onto the beach, while also reducing risks to members of the public accessing an area that remains unsafe.
The municipality reminded residents and visitors that Diaz Beach remains closed for safety reasons. This is after a geotechnical assessment found that sections of the existing dune slope are unstable and susceptible to further localised erosion due to the slope geometry and ground conditions.
The municipality further advised that a possible evacuation order may be issued should engineers find it necessary.
“The Municipality has engaged with affected property owners and continues to monitor the dune closely. Urgent measures are being pursued towards the safe reopening of Diaz Beach. The beach will remain closed until it is considered safe. Please do not bypass barriers or enter restricted areas.”
The Western Cape Government says it recognises the serious and ongoing risks posed by coastal erosion at Diaz Beach and the need to protect people, properties and public infrastructure in the affected area.
The municipality and local government say they are in agreement that a permanent solution for improved coastal management at Diaz Beach needs to be implemented. The Basic Assessment process currently underway will reportedly inform the appropriate long-term solution.
“It is important to emphasise that the proposed sandbags are not regarded as the permanent solution to the coastal erosion problem. Coastal protection measures can affect the natural movement of sand between the dune, beach and nearshore environment and, if not appropriately designed and managed, can contribute to erosion, beach narrowing and the loss of the beach as a public amenity.”
Based on the latest information received, Minister Anton Bredell and the Department of Environmental Affairs and Development Planning say he has decided to abide by the court order allowing the sandbags to be installed as an urgent temporary measure.
The permanent solution will be determined through the Basic Assessment process in the coming months and could include the removal of the sandbags. Options such as sand replenishment may also be considered in determining the best practicable environmental option.
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