Why emergency measures are being introduced at a popular Mossel Bay beach

Authorities have agreed on emergency measures to address the serious and ongoing coastal erosion threatening Mossel Bay’s Diaz Beach, with temporary sandbags set to be installed to reduce the immediate risk of further collapse.

The Western Cape Government and Mossel Bay Municipality have reached an agreement on interim measures aimed at protecting people, properties and public infrastructure in the affected area.

The Mossel Bay Municipality has proposed installing geotextile sandbags to stabilise the dune and reduce the immediate danger posed by continued erosion.

Emergency measure to reduce the risk at Diaz Beach

According to the Western Cape Department of Environmental Affairs and Development Planning, the temporary intervention is intended to prevent further damage to properties and infrastructure.

It will also help reduce risks to members of the public accessing parts of the area, which authorities have warned remain unsafe.

However, officials have stressed that the sandbags are not a permanent solution to Diaz Beach’s erosion problems.

“The Mossel Bay Municipality and the Western Cape Government are in agreement that a permanent solution for improved coastal management at Diaz Beach needs to be implemented,” department spokesperson Rudolf van Jaarsveldt said.

A Basic Assessment process is currently underway and will help determine the most appropriate long-term solution.

Sandbags could eventually be removed

While the emergency intervention has been approved, environmental authorities have warned that coastal protection measures can affect the natural movement of sand between dunes, beaches and the nearshore environment.

If poorly designed or managed, such measures can contribute to further erosion, beach narrowing and even the loss of parts of the beach as a public amenity.

Environmental Affairs and Development Planning MEC Anton Bredell has decided to abide by a court order allowing the sandbags to be installed as an urgent temporary measure.

The longer-term solution will be determined through the environmental assessment process in the coming months.

This could ultimately include removing the sandbags, while other options, including sand replenishment, may also be considered.

Authorities say the emergency measures are aimed at managing the immediate danger, but the bigger challenge is finding a sustainable solution to protect Diaz Beach in the long term.

The Western Cape Government and Mossel Bay Municipality have committed to working together on both the immediate risks and longer-term interventions needed to improve coastal management in the area.