Port Phillip Bay Coastal Hazard Assessment: Inundation Extent for 1.4m Sea Level Rise

Multiple spatial layers model storm tide inundation, erosion, and groundwater hazards for Port Phillip Bay under various sea level rise scenarios. The dataset includes 10 storm tide inundation layers for a 1% Annual Exceedance Probability event across 5 SLR scenarios, with and without rainfall, and 6 erosion and 6 groundwater hazard layers. The Department of Energy, Environment and Climate Action published this assessment, with technical reports from CSIRO (2022), Water Technology (2023), and Kennedy (2022).

Use Cases

• Assess regional-scale flood risk based on modelled storm tide inundation extents for 1% AEP events.
• Model future coastal erosion hazards based on projected sea level rise scenarios up to 1.4 meters.
• Evaluate shallow groundwater rise as a climate hazard based on depth rasters for various SLR scenarios.
• Compare combined hazard impacts (inundation with rainfall) against baseline inundation-only scenarios.

Strengths

• Provides hazard extents for three distinct coastal processes: inundation, erosion, and groundwater.
• Includes multiple sea level rise scenarios (e.g., 0m, 0.5m, 0.8m, 1.1m, 1.4m) for forward-looking analysis.
• Storm tide layers incorporate modelled 95th, 50th, and 5th percentiles to represent uncertainty.
• Supported by detailed technical reports from recognized institutions like CSIRO.

Limitations

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

Provenance

Source

Department of Energy, Environment and Climate Action

Collection Method

Modelled outputs from coastal hazard assessments conducted by CSIRO, Water Technology, and Kennedy.

Freshness

Last updated 2026-06-15 04:12:29.134182; freshness should be verified.

Geography

Port Phillip Bay, Australia