Port Phillip Bay is Victoria’s largest bay, and the area surrounding it is home to 1.3 million Victorians. The Bay supports a variety of recreational and tourism uses, a range of industry including two major ports, and a diverse range of environmental values including Marine Sanctuaries and Wetlands of International Significance.

Climate change can impact on coastal areas in a variety of ways from the flooding of low lying coastal areas, to shoreline changes due to coastal erosion and accretion, to ground water levels. These impacts can cause a range of detrimental impacts on coastal infrastructure and environments, and the communities living along the coast.

The social, economic and environmental importance of the coastline means that these coastal hazards, when they occur, can have an effect beyond those people living and working on the coast. As we increasingly deal with climate change, it is vital that we complete a detailed assessment of climate-change induced coastal hazards for Port Phillip Bay, so we can better understand how to plan for and better manage current and future natural, cultural and economic assets around the Bay.

The Coastal Hazard Assessment will identify likely coastal hazard impacts around Port Phillip Bay through data analysis and modelling of a range of anticipated climate change scenarios.  The data generated through the assessment will be shared with land managers and the community, to help them consider future planning for climate change.


Stage 1: Gap Analysis

Gathering and understanding existing information on coastal inundation, erosion and groundwater change for the Bay and identifying any critical gaps in data required to complete the hazard assessment.

Stage 2: Data Acquisition

Filling any critical data gaps by sourcing further data, or undertaking further research

Stage 3: Coastal Hazard Assessment

Undertaking the hazard assessment by modelling future climate scenarios to define the extent of land around Port Phillip Bay expected to be threatened by inundation, shoreline and groundwater change.

Stage 4: Capacity Building

Integrating all the hazard data into decision support systems for the use of local and state governments, land managers and asset owners to help them make decisions and prepare for the future based on scientifically based information.

The project is being delivered by DELWP in partnership with Melbourne Water, Parks Victoria, the Association of Bayside Municipalities, the 10 local government areas that adjoin Port Phillip Bay, the two Catchment Management Authorities for the Bay, and Traditional Owners.

Key milestones include:

  • Late 2017 – Initial project planning commenced
  • July 2018 – Commenced collection of existing data and understanding data gaps
  • June 2020 – project completed

Dataset/s and maps that will define the extent of land around Port Phillip Bay expected to be impacted by the coastal hazards of inundation, shoreline and groundwater change, as modelled under future climate scenarios.

    Project updates will be published here as they become available.

Four pilot Coastal Hazard Assessments (CHA) have been undertaken in Victoria

Page last updated: 21/12/2018