Victorian Coastal Cliff Assessment: Instability Areas for 2100 Sea Level Rise

A 2026 update from the Department of Energy, Environment and Climate Action provides modelled spatial layers of coastal cliff instability along the Victorian coastline for a 2100 scenario with 0.8m sea level rise. The dataset includes outputs for both gradual toe erosion and episodic cliff instability events, superseding previous Stage 1 assessments. Application is recommended at statewide or regional scales, not for individual property assessments.

Use Cases

• Modeling long-term coastal retreat based on historical erosion rates and future sea level rise factors.
• Identifying areas prone to episodic cliff instability events influenced by geological structures and material properties.
• Assessing regional-scale risk from marine, weathering, and biological erosion processes described in the technical reports.

Strengths

• Includes multiple spatial layer outputs for modelled erosion scenarios.
• Supported by detailed technical reports (Stage 1 and Stage 2a) from Tonkin & Taylor.
• Provides data for a specific future scenario (2100 with 0.8m sea level rise).

Limitations

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

Provenance

Source

Department of Energy, Environment and Climate Action

Collection Method

Modelled spatial outputs from coastal cliff assessment scenarios.

Time Range

Future scenario for 2100.

Freshness

Last updated 2026-06-15 09:24:31.497695; freshness should be verified.

Geography

Victorian coastline.