Groynes Along Our Beaches


The City of Joondalup have released a draft plan that would see 17 groynes placed along the beach from Hillarys to Mullaloo.

Our Aims

  • MBCG feel that Mullaloo Beach should remain a natural beach. We believe that soft-option mitigation efforts are far more sustainable and preferrable to the community.

Our Objectives

  • To have the Joondalup Council reject the draft plan and make the City administration engage in a proper CHRMAP process outlined by State Planning Policy.

UPDATE: On the 12th of December, 2023, the City of Joondalup passed an alternate ammedment by Cr. Daniel Kingston calling for the Draft CHRMAP to be redone, and that a community reference group to be established. After much debate, the alternate motion was passed.

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, we at the Mullaloo Beach Community Group Inc. believe that this plan will have significant negative impacts on our community and our beloved coastline.

The City’s draft plan is currently out for public consultation.

Limitations of Groynes

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.

This is a significant concern as the proposal focuses solely on this option, without considering the efficacy of all potential mitigation and adaptation options.

The Need for Proper Consultation and Evaluation of All Options

The approach the City has taken to produce this draft plan bypasses the community and all stakeholders, avoiding proper consultation that would likely delay time-sensitive next steps of developing a business case in order to seeking grant funding for the project.

The proper CHRMAP process is meant to involve the community at each step, not just the end. This is intended to ensure that the community doesn’t lose the amenity of the natural areas, and that key stakeholders’ wishes are respected.

The City’s Real Objective and the D.A.D. Principle

The northern end of the proposed groynes appear designed to protect the erosion hotspot of Pinnaroo Point, coincidentally where the City has in 2022 approved the construction of a $4M development that ratepayers will be financially responsible mitigation efforts.

It appears that the City’s objective is to secure State and Federal funding to build and maintain these hard structures, even if it means affecting our beach lifestyle. They seem to be adhering to a planning principle called D.A.D. – Decide-Advise-Defend. They have made their decision, are now advising us of it, and are prepared to minimise any attempts at valid public scrutiny.

Our Plan to Stop the Groynes Along Our Coast

Our plan is to encourage people to fill out the consultation response, and reenforce our position by gathering public objections into a consolidated, vocal effort through activities such as a petition to the City.

It is important you express your own opinions from your own personal point of view on the matter so an example of important points your response could include are:

I, 100 % reject the Draft Plan in its entirety as it completely fails to comply with:
a) the community’s preferred options as clearly identified by the Coastal Values Survey 2018, and,
b) the required State Policy (SPP2.6) and the two sets of required Guidelines

The City of Joondalup MUST obtain a second full engineering report from another engineering firm before proceeding.

Other comments you can add could cover:

  • The proposed plan has not provided any alternatives to groynes which is in direct conflict with the 2018 community feedback which was to retain open sandy beaches and use more soft controls
  • The beach will be too hard for surf club to patrol
  • groynes cause rips and hazards to beach users 
  • reduction in property price, most of us live here for the beach
  • Kitesurfing, windsurfing, wind foiling won’t be possible, will ruin Watersport tourism and local businesses that use our beaches 
  • impact on environment 
  • COJ last remaining surf spot will be gone forever
  • Won’t be able to walk the long stretch of uninterrupted beach 
  • Whale migration, humpbacks use beaches and Dunes as points of Refrence during migration each year
  • impact to the dunes and beaches during construction 
  • very expensive compared to other soft options
  • would prefer to see private assets relocated 

Our goal is to force the City to adhere to the proper CHRMAP process, including thorough public consultation, and weighing all options to proceed with the most effective, and cost-effective option(s).


You can find a series of helpful questions and answers on Groynes Along Our Beaches below.

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