Residents demand more action against coastal erosion in Mandurah as the city continues to assess risks to northern beaches.
The Coastal Hazard Risk Management and Adaptation Plan (CHRMAP) aims to assess the risks of coastal hazards and identify solutions.
On Monday, residents attended a workshop to give their views on potential solutions.
The workshop addressed the impact of climate change and developments on the coastline.
The draft CHRMAP report showed the potential impacts of erosion along the dunes and foreshore at Halls Head.
There is currently no impact on local roads, but the report suggests these could be affected by 2030.
“Some of this erosion is categorized as intolerable and is on the short term plan as something we need to deal with,” said Heather O’Keefe, senior coastal engineer for GHD.
“Potential adaptation options are continued beach nourishment, dune conservation and revegetation, road elevation, and drainage management.”
While in San Remo flooding was not a problem as it was on higher ground, there was potential for erosion with a resident at the meeting saying “quite often there is a waterfall 10 foot to the beach on Watersun Drive “.
According to the Department of Transportation, the bypassing of the sand occurs every year. Sand is pumped to the south side of the Mandurah Ocean Entrance Channel to continue the natural flow of sand along the coast and maintain the northern beaches.
Mandurah resident Jacob Cumberworth has raised concerns about the current sand bypass mechanism.
“There is no natural recreation of Town Beach,” he said.
“The beaches erode over a six month period, then we pump sand again – it reduces the ability of the sand dunes to regenerate.”
Mr Cumberworth asked if there was an option for a permanent sand bypass.
“We have been advocating with the state government for the past five years for a permanent sand bypass,” said a spokesperson for GHD.
“The infrastructure is there and we have been fighting for several years to get it submerged so you don’t have the machines on the beach.
“The permanent bypass of the sand will greatly improve the current situation, but not completely solve it.”
Some residents applauded in response, however, the spokesperson said other residents did not want the sand to be bypassed all the time due to the presence of machines on the beach.
The CHRMAP report is expected to be made public at the end of March 2022 once ratified by the board.