Since 2009, Portsea Front Beach has experienced severe beach erosion as a result of ongoing swell waves.
Over the last five years, DELWP has completed a number of research studies of Portsea Front Beach and has also undertaken short term measures to protect Portsea foreshore with new and upgraded coastal infrastructure.
In late 2013, DELWP commissioned a Wave Modelling and Monitoring Investigation. The investigation, which is a technical document undertaken by Worley Parsons, is now complete and can be accessed below:
Worley Parsons Report [PDF File - 3.1 MB]
Report Appendices A-B [PDF File - 6.9 MB]
Report Appendices C-E [PDF File - 8.4 MB]
The wave investigation used a range of data and computer models to help describe the wave processes that are impacting Portsea Front Beach.
This involved placing monitoring instruments at selected locations on the seabed off-shore from Portsea to measure currents, waves and tides and accurately model the wave climate. The consultant also reviewed existing documents and data on erosion.
Over the last twelve months DELWP, has also been meeting with a local stakeholder reference group. This local input, along with the Wave Modelling and Monitoring Investigation data, will be used to inform a detailed independent analysis of options to address the erosion.
The analysis will be completed by September 2016 and will include several community consultation sessions.
DELWP will continue to work closely with the local community as the options are assessed in order to achieve the best possible outcome.
The Portsea Front
Beach Options Analysis commenced in March 2016, and (this study) is using the data collected and computer models developed in the Portsea Wave Modelling and Monitoring Investigation (2016) to analyse six potential options for the future management of the Portsea Front Beach. The
"Options Analysis" is being undertaken by the same consultant – "Advisian" as the previous "Wave Investigation".
The six options being considered are
- Shaping the seabed with dredging
- A breakwater seaward of the Portsea Pier
- A groyne (s)
- Replacing the sandbag wall with a rock wall
- Beach restoration or renourishment
- Removing and not replacing the sandbag seawall.
In May 2016 the DELWP held a community drop in session at Portsea to provide the local community with the opportunity to see the six options presented, and to discuss the options with the consultant engineer.
The information presented at the drop in session in May can be accessed below.
Portsea - Option 1
[PDF File - 301.8 KB]
Portsea - Option 2
[PDF File - 311.4 KB]
Portsea - Option 3
[PDF File - 361.6 KB]
Portsea - Option 4-6 [PDF File - 443.4 KB]
As the Options Analysis proceeds there will be a further opportunity for community input and discussion with the date likely to be in November. The date and time for this community drop in session for this will be advertised in local media and made known to those people who are registered with DELWP
to receive updates. The Options Analysis is scheduled for completion in November 2016.
For further information on the progress of the Portsea Options Analysis, or if you wish to have your email address added to our contact list please contact Jill Garvey, Senior Project Officer Coastal Programs on 03 9210 9402 or email@example.com.