Western Australian Soil Groups Third Highest Probability Raster

Western Australia soils are mapped in raster format with 90-meter pixel resolution. The dataset contains the third most probable soil group per pixel, derived from conventional soil landscape polygon maps created in 2013. It was produced by Karen Holmes of the Department of Primary Industries and Regional Development.

Use Cases

• Analyze spatial uncertainty in soil mapping by comparing the third highest probability Soil Group against the first and second.
• Integrate the SoilGroup_MaxClass3 raster with other environmental layers for land suitability modeling.
• Validate soil prediction models using the 90-meter pixel grid and the probabilistic classification methodology.

Strengths

• Raster data provides continuous spatial coverage at a 90-meter pixel resolution.
• Derived from authoritative soil landscape mapping conducted by a government department.
• Explicitly models classification uncertainty by providing the third most probable soil group.

Limitations

• The underlying soil landscape mapping is from 2013 and may not reflect recent changes.
• Individual class probabilities are not included in this release and require a separate request.
• Limited to Western Australian Soil Groups classification system.

Provenance

Source

Department of Primary Industries and Regional Development, Western Australia.

Collection Method

Derived from conventional soil landscape polygon maps; soil class probability predicted per pixel.

Time Range

Source mapping from 2013.

Freshness

Last updated March 2026, though the source mapping is from 2013.

Geography

Western Australia.