Brisbane Citywide Overland Flow Flood Study Models

Brisbane City Council provides a Citywide Creek and Overland Flow Path Mapping Flood Study comprising 27 individual sub-models covering the entire council area. The study includes results data for flood height, depth, and hazard for eight different storm event recurrence intervals. It was produced by GHD in April 2017 to inform flood risk management policy.

Use Cases

• Identify the relevant 27 sub-models for a specific location using the detailed map to localize flood analysis.
• Analyze flood height, depth, and hazard results across the 2 to 2000-year Average Recurrence Interval storm events for risk assessment.
• Compare flood hazard (depth x velocity) outputs between different sub-models to understand spatial variations in flood risk.
• Use the sub-model delineation methodology from the report to extend or validate localized flood modeling efforts.

Strengths

• Covers the entire Brisbane City Council area through 27 individual sub-models.
• Provides results for eight specific storm event frequencies (2, 5, 10, 20, 50, 100, 500, 2000-year ARI).
• Includes three key flood metrics: height, depth, and hazard (depth x velocity) for each model and event.

Limitations

• Core results data files for sub-models are not fully available in this listing and must be added gradually or requested.
• The underlying study and models are from 2017 and may not reflect recent changes in land use or climate patterns.
• Primary data is presented via reports and maps (HTML, PDF), not in a structured, machine-readable tabular format.

Provenance

Source

Brisbane City Council, produced by consultancy GHD.

Collection Method

Technical flood modeling study delineated into 27 sub-models.

Time Range

Study report dated April 2017.

Freshness

Metadata updated March 2026, but the core flood study report is from April 2017.

Geography

Brisbane City Council area, Queensland, Australia.