The City of Joondalup have released a draft plan that would see 17 groynes placed along the beach from Hillarys to Mullaloo.
On May 5, 2023, the City of Joondalup released a document outlining a proposal to protect our coastline from erosion, sea level rise, and inundation. The proposed mechanism involves the installation of 17 groynes along the stretch of our coast between Hillarys Boat Harbour and Ocean Reef Marina, a decision that was determined at a council meeting on May 23, 2023.
While the City argues that this is a cost-effective solution, many in the community believe that this plan will have significant negative impacts on our community and our beloved coastline. This is a significant concern as the proposal focuses solely on this option, without considering the efficacy of all potential mitigation and adaptation options.Groynes, while effective at trapping sand movement, are incapable of protecting against sea level rise and climate change. The proposed groynes would limit direct access to the beaches and the coastline, disrupting the natural sand flows essential for maintaining our beaches. The City’s solution to this problem is to perpetually move sand from the south of each groyne to its north, a costly process currently in place at Hillarys Boat Harbour.
The Draft Coastal Hazard Risk Management and Adaptation Plan is open for comment until 31 July 2023.
For more information on the issues including a Q&A section on groynes take a look at Mullaloo Beach Community Group’s website.
Kallaroo residents are encouraged to make a submission on the City’s website or by emailing
