Port Phillip Bay Coastal Hazard Assessment - Erosion Extent - 2070 - 0.5m Sea Level Rise (

A 2026 spatial dataset from the Department of Energy, Environment and Climate Action models coastal erosion extents around Port Phillip Bay, Australia. It includes multiple hazard layers for storm tide inundation, erosion, and groundwater under various sea-level rise scenarios. The data is intended for regional-scale planning and is supported by technical reports from CSIRO and Water Technology.

Use Cases

• Model regional-scale coastal erosion risk based on projected sea-level rise scenarios.
• Assess storm tide inundation hazard for the 1% Annual Exceedance Probability event.
• Map areas with shallow groundwater hazard (within 0-2m of the surface) under different climate futures.
• Inform land-use and coastal management planning using modelled 95th, 50th, and 5th percentile hazard extents.

Strengths

• Includes multiple hazard types (erosion, inundation, groundwater) across a range of sea-level rise scenarios (0m to 1.4m).
• Data is accompanied by detailed technical reports from CSIRO (2022) and Water Technology (2023).
• Spatial layers are provided in multiple common GIS formats (SHP, TAB, GDB, DXF).

Limitations

• The product is explicitly stated as not suitable for individual property-scale assessments.
• Row count and column-level documentation are unknown, requiring manual inspection after download.
• Data may reflect modelling assumptions and geographic bias specific to Port Phillip Bay.

Provenance

Source

Department of Energy, Environment and Climate Action

Collection Method

Modelled spatial outputs from coastal hazard scenarios.

Time Range

Scenarios project to years 2010, 2040, 2070, and 2100.

Freshness

Last updated 2026-06-15.

Geography

Port Phillip Bay, Australia.