ACT Hydrogeological Landscape Units with Salinity Hazard Ratings

Hydrogeological Landscape (HGL) units for the Australian Capital Territory delineate areas with similar salt stores and pathways. The dataset contains hazard ratings for land salinity, stream salt load, stream EC, and overall salinity hazard for each unit, along with management strategies. Rob Muller, Wayne Cook, Allan Nicholson, and Alie Cowood contributed to this dataset, which was last updated on April 4, 2026.

Use Cases

• Assessing land salinity hazard for agricultural planning based on hazard ratings.
• Evaluating stream salt load impacts on water quality based on stream EC and salt load hazard ratings.
• Selecting appropriate salinity management strategies based on listed landscape functions and management descriptions.
• Understanding regional hydrogeological processes based on integrated causative factors like geology, soils, slope, and climate.

Strengths

• Captured at a 1:25,000 scale, suitable for paddock-scale assessment.
• Integrates multiple information sources including soil landscape maps, hydrogeological data, and salinity occurrence maps.
• Provides hyperlinks to full management descriptions for each HGL unit.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The ACT Government disclaimer states the map may not be free from error.

Provenance

Source

ACT Government Geospatial Data Catalogue (ACTmapi)

Collection Method

Integration of causative factors (geology, soils, slope, regolith thickness, climate) and multiple data sources.

Freshness

Last updated 2026-04-04 03:01:33.070505; freshness should be verified.

Geography

Australian Capital Territory (ACT)