Watertable Depth to Groundwater Model at 100m Resolution

A 100m resolution raster model of watertable depth, containing interval values of <5m, 5-10m, 10-20m, 20-50m, and >50m. The model was compiled by the Department of Energy, Environment and Climate Action as the difference between a Digital Terrain Model and watertable elevation in mAHD. It was last updated on April 27, 2026.

Use Cases

• Modeling groundwater recharge potential based on watertable depth intervals.
• Assessing land suitability for agriculture or construction based on proximity to the watertable.
• Integrating with hydrological models to understand surface water-groundwater interactions.
• Creating regional groundwater risk maps for environmental planning.

Strengths

• Provides a consistent national-scale model at a 100-meter spatial resolution.
• Derived from authoritative base models (Digital Terrain Model and watertable elevation).
• Data is openly licensed under CC-BY-4.0 for broad reuse.

Limitations

• Data is presented as categorical intervals rather than continuous depth measurements.
• The underlying source data and temporal coverage for the base models are not specified.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

Department of Energy, Environment and Climate Action (data_gov_au)

Collection Method

Compiled as the difference between a Digital Terrain Model and a watertable elevation model.

Time Range

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Freshness

Last updated 2026-04 27 18:56:06.434943; freshness should be verified.

Geography

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