Our Coast, Our Journey

Published on Friday, 11 June 2021 at 9:39:00 AM

Coastal Hazard Risk Management & Adaptation Plan

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Our coastline is highly valued. It provides us with places and spaces to live, do business, be active and enjoy. However, the coastline is not static – it is constantly changing through storm events, predicted sea level rise and the changes that people make to the coastline.

These coastline changes are now becoming much more noticeable and happening more rapidly. For this reason, local governments throughout Western Australia have been undertaking studies to understand the impacts of these coastal processes, particularly where people live.

The Shire is no exception to this. We are trying to understand how our coastline will be impacted by the coastal processes of ‘erosion’ and ‘inundation’.

Coastal Hazard Risk Management Adaptation Plan (CHRMAP) for Lancelin, Ledge Point and Seabird was undertaken in 2019 and an Inundation Study for Lancelin, Ledge Point, Seabird and Guilderton in 2020. However, there are some pieces of the puzzle missing so the Shire is now working to fill those gaps so we have a comprehensive and integrated understanding of how our coastline will be impacted in the future and how we can plan for and manage these changes in the four coastal town sites.  

Coastal care and management are the responsibility of all of us who value and use the coast.  Throughout the process, we will be working closely with the community and key stakeholders to develop the recommendations to manage our coastline into the future.

If you are interested in being kept up to date on the project, please visit https://getinvolved.mysocialpinpoint.com.au/shire-of-gingin-chrmap.

Frequently Asked Questions

Why is the Shire doing this project?

The coastline is constantly changing from storm events, sea level rise and the changes that people make to the coastline (buildings, hard coastal structures and dune/beach changes). As the coastline begins to change, it can impact the infrastructure (for example footpaths, roads, houses, beach access, services etc) in the ‘coastal zone’ and how the coast can be used.

This project will help the shire to understand ‘coastal hazards’ and ‘risks’ that may impact the coastline in the future and what the options are for managing those.

Why are we doing more coastal planning when we have already done a CHRMAP and Inundation Study?

In 2019 cardno prepared a chrmap for lancelin, ledge point and seabird that examined erosion risks and adaptation options. In 2020 baird prepared an Inundation Study for Lancelin, Ledge Point, Seabird and Guilderton.

However, there are some pieces of the puzzle missing so the shire is now working to fill those gaps. This includes risk assessment and adaptation options for Guilderton and an assessment of what else has changed across the four coastal towns. This will give us a comprehensive and integrated understanding of how our coastline will be impacted in the future and how we can plan for and manage these changes in the four coastal town sites.

In addition, CHRMAPs contain a significant amount of technical information which can be difficult to understand. As a result, we will be producing a summary document that provides this information in an easy-to-read document using simple language.

What is a CHRMAP?

A CHRMAP is the study prepared to communicate information about future coastal planning. It includes a technical assessment to understand the coastal processes and social assessment to understand the community values and financial and environmental implications.

The State Government’s Coastal Hazard Risk Management and Adaptation Planning Guidelines (July 2019) provide guidance for decision makers to develop and implement effective chrmaps. 

The key components of a CHRMAP are:

  • Understanding the local environment and community values
  • Assessing how the environment, infrastructure and can cope with the impact of climate change
  • Identifying the risks (likelihood of an event occurring and the consequences of that event occurring)
  • Analysing the findings and evaluating the management options
  • Identifying the adaptation options
  • Identifying funding options, monitoring and review of frameworks

The CHRMAP will estimate where the coastline will be located in the short, medium and long-term future.

By understanding where the coastline will be in the future, it allows us to understand what infrastructure may be impacted by coastal processes and investigate which options for managing these impacts might be appropriate in particular areas.

What options are there for managing coastal risks?

There are four main adaptation options (adjustments that can be made) for managing coastal risk.

  • Avoid – not allowing new development in areas identified to be affected by coastal hazards.
  • Planned or managed retreat – relocating or removing things which may be at intolerable risk of damage from coastal hazards.
  • Accommodate – design measures and/or management strategies that make the risks from coastal hazards more acceptable.
  • Protect – works that will preserve the foreshore reserve, public access, public safety and significant property and infrastructure.

Different options are appropriate for different locations taking into consideration the type of coastline, community values, environmental impacts and cost implications.

How will the CHRMAP impact my property?

The updated CHRMAP will identify the areas that are at risk of being impacted by coastal hazards and when they are likely to occur. The CHRMAP will make recommendations on the appropriate adaptation options for different areas.

The impact on your individual property depends on where it is located as the hazards and risks vary throughout the coastline.

During stage 5 of the project, you will be able to view the documentation and understand if and how your property may be impacted.

How long will the project take?

The project will be undertaken in six stages, identified in the ‘project timeframes’ section.

It is anticipated that the project will be complete in early 2022. Any changes to the timeframes will be updated on this page.

How can I find out what all the terminology means?

CHRMAPs do contain a lot of technical terms which can be difficult to understand. Some of the common terms we will use throughout this project can be viewed here or by viewing State Planning Policy 2.6 - Coastal Planning.

How can I get involved in the project?

There are a number of ways you can get involved.

  • Fill in the community survey to confirm what you value about the coast.
  • Click here to view our web map and drop pins to tell us about the places you go and the things you value along the coast. 

There will also be other opportunities to provide feedback at later stages of the project so keep an eye out on the website or register to be kept up to date.

We will work with you to ensure your concerns and aspirations are reflected in the documents developed and will incorporate your advice and recommendations into the decision to the maximum extent possible. We will also provide feedback on how public input has influenced the decision.

Can I register my interest to be kept up to date?

You can register your interest in being kept up to date with the project via the consultant's website in the 'subscribe me for updates' section. 






March 2021 - June 2021


Background review of information by Consultants in collaboration with the Shire. 

July - September 2021

Community Consultation

Engage in a variety of ways to provide your feedback including: 

  • Online from 11 June - 9 August 2021. Complete the community values survey, mapping exercise and register for a workshop. Visit https://getinvolved.mysocialpinpoint.com.au/shire-of-gingin-chrmap
  • In Person from 31 July 2021, 1-4.30pm. Attend the Community Workshop at the Guilderton Community Hall for the Lower Coastal Region. 
  • In Person from 1 Aug 2021, 1-4.30pm. Attend the Community Workshop at the Lancelin Sporting Complex for the Upper Coastal Region. 
March - September 2021

Guilderton Assessment

Undertake technical assessment for the Guilderton town site. 

November 2021

CHRMAP Preparation 

The consultants will prepare the updated CHRMAP for Lancelin, Ledge Point, Seabird and Guilderton.

In Progress
November - December 2021

Public Advertising

Opportunity for the community to review and comment on the draft CHRMAP. 

January 2022


Council review and approval of CHRMAP. 


Contact Karen Okely on (08) 9575 5125 / Karen.Okely@gingin.wa.gov.au  

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