Dataset
NSW Department of Climate Change, Energy, the Environment and Water
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Hydrogeological Landscapes (HGL) of the Australian Capital Territory 2017 (Third Edition)

This dataset supersedes all earlier versions of 'Hydrogeological Landscapes (HGL) of the Australian Capital Territory'. It incorporates HGL boundary and management area edits based on updated soil landscape mapping for the ACT.

The focus of this dataset is the Australian Capital Territory. It contains digital spatial data developed to assist in land management decision making in the ACT. The dataset contains hazard ratings for land salinity, stream salt load and stream EC as well as overall salinity hazard for each HGL unit. Information about landscape functions and appropriate salinity management strategies are also listed. Hyperlinks to full management descriptions for each HGL unit are provided. The Hydrogeological Landscape (HGL) concept provides a structure for understanding how differences in salinity are expressed across the landscape. A HGL spatially differentiates areas with similar salt stores and pathways for salt mobilisation. The process of delineating a HGL relies on the integration of a number of causative factors: geology, soils, slope, regolith thickness, and climate; an understanding of the different modes of salinity development; and the impacts of salinity within landscapes (land salinity, salt load and salt concentration in streams due to salt contributions from base flow and runoff ). Information sources such as soil landscape maps, site characterisation, salinity occurrence maps, hydrogeological data, surface water and groundwater data are incorporated into standardised unit descriptions.

Spatial resolution for this product is 1:50 000.

Data and Resources

Metadata Summary What is metadata?

Field Value
Language English
Alternative Title ACT_HGL_2017
Edition Third
Purpose This dataset was generated for the ACT Environment and Planning Directorate as a component of the ACT Hydrogeological Landscapes (HGL) Framework project. The focus of this project was to assess impacts of climate change on wetlands and on land degradation issues related to salinity and erosion in the ACT.
Frequency of change Irregular
Keywords WATER-Salinity,GEOSCIENCES-Geology,GEOSCIENCES-Hydrogeology,GEOSCIENCES-Geomorphology,HAZARDS,SOIL,LAND-Use
Metadata Date 2017-05-22
Date of Asset Creation 2017-05-19
Date of Asset Revision 2020-11-05
Date of Asset Publication 2017-05-22
License Creative Commons Attribution 4.0
Equivalent Scale 50000
Vector representation
Record 1
Object type
Complex
Object count
Geospatial Topic Geoscientific information
NSW Place Name Australian Capital Territory
Extent

Dataset extent
Temporal Coverage From 2017-01-04 - 2017-05-22
Datum GDA94 / MGAZone 55
Legal Disclaimer Read
Attribution NSW Department of Climate Change, Energy, the Environment and Water asserts the right to be attributed as author of the original material in the following manner: "© State Government of NSW and NSW Department of Climate Change, Energy, the Environment and Water 2017"