Victorian Coastal Cliff Assessment: Instability Areas Under 1.1m Sea Level Rise

A 2025 update provides spatial layers modelling future coastal cliff instability along the Victorian coastline under a 1.1-meter sea level rise scenario by 2100. The dataset, produced by the Department of Energy, Environment and Climate Action, includes modelled outputs for toe erosion and episodic cliff instability. It is intended for statewide or regional scale assessment, not individual property analysis.

Use Cases

• Modeling future cliff toe retreat based on historical erosion rates and projected sea level rise.
• Assessing areas prone to episodic cliff instability events driven by changes in loading or material properties.
• Planning for regional-scale coastal adaptation strategies based on modelled erosion scenarios.
• Identifying soft cliffs where slope flattening processes are likely to occur due to toe erosion.

Strengths

• Dataset is an update (Stage 2a) that supersedes previous Stage 1 outputs, indicating refinement.
• Explicitly designed for a specific sea level rise scenario (1.1m) projected to 2100.
• Accompanied by detailed technical reports from Tonkin & Taylor (2025) and Stage 1 for guidance.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The product is not suitable for individual property scale assessments, limiting granular use.

Provenance

Source

Department of Energy, Environment and Climate Action

Collection Method

Modelled spatial outputs from erosion scenarios.

Time Range

Projection to year 2100.

Freshness

Last updated 2026-06-15 06:36:19.503796

Geography

Victorian coastline, Australia.