Creek Flood Likelihood Zones For Brisbane City Council

Brisbane City Council's dataset, created in June 2013, maps the likelihood of creek flooding within its local government area. It classifies areas into four flood likelihood categories: High, Medium, Low, and Very Low, based on Annual Exceedance Probability (AEP) models.

Use Cases

• Train a geospatial model to classify flood likelihood zones (High, Medium, Low, Very Low) based on AEP and ARI values.
• Analyze the spatial distribution of High likelihood areas derived from 5% AEP (20-year ARI) flood inundation extents.
• Compare flood risk extents between different AEP levels (1% AEP, 0.2% AEP, 0.05% AEP) for urban planning.
• Integrate creek flood likelihood layers with property data to assess localized hazard exposure.

Strengths

• Provides four distinct, model-derived flood likelihood categories (High, Medium, Low, Very Low).
• Based on defined probabilistic flood models using Annual Exceedance Probability (AEP) and Average Recurrence Interval (ARI) metrics.
• Spatially covers the entire Brisbane City Council local government area.

Limitations

• Core flood modeling data is from 2012-2013, potentially not reflecting recent climate or land-use changes.
• Dataset format is HTML, limiting direct machine-readability and programmatic analysis without extraction.
• No quantitative row or feature count is provided, obscuring the dataset's granularity and scale.

Provenance

Source

Brisbane City Council (data.brisbane.qld.gov.au)

Collection Method

Modeling from flood inundation extents and the Citywide Flood Awareness Mapping study (Worley Parsons, 2012).

Time Range

Model data created June 2013.

Freshness

Metadata indicates a last update in March 2026, but the underlying flood model data originates from 2012-2013.

Geography

Brisbane City Council local government area, Queensland, Australia.