ACT Hydrogeological Landscapes with Salinity Hazard Ratings

Hydrogeological Landscape (HGL) units for the Australian Capital Territory differentiate areas with similar salt stores and pathways. The dataset contains hazard ratings for land salinity, stream salt load, and stream EC, mapped at a 1:25,000 scale. It was developed by NSW OEH, NSW DPI, and UC contributors for ACT land management.

Use Cases

• Assess paddock-scale land salinity hazard based on integrated causative factors like geology, soils, and slope.
• Identify appropriate salinity management strategies based on landscape function descriptions linked to each HGL unit.
• Model stream salt load and electrical conductivity (EC) contributions from base flow and runoff.
• Integrate soil landscape maps and hydrogeological data for regional salinity risk mapping.

Strengths

• Captured at a detailed 1:25,000 scale suitable for paddock-scale assessment.
• Integrates multiple information sources including soil maps, site characterisation, and salinity occurrence maps.
• Provides hyperlinks to full management descriptions for each Hydrogeological Landscape 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 03:01:26.507348; freshness should be verified.

Geography

Australian Capital Territory (ACT)