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Hydrogeological Landscapes of the Central West Local Land Services Region: Nov 2020 (First Edition)

Created 24/06/2025

Updated 12/11/2025

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This dataset supersedes much of the area covered by previous CW CMA and Western CW catchment HGL assessments. It is bounded by the Central West LLS regional boundary rather than the old CW CMA boundary. For CW CMA areas that fall outside the CW LLS boundary, please refer to the Residual Hydrogeological Landscapes of the Central West CMA Catchment: Nov 2020 dataset. The Hydrogeological Landscape (HGL) concept provides a structure for the understanding of how salinity manifests itself in the landscape and how differences in salinity are expressed across the landscape. A HGL spatially defines areas of similar salt stores and pathways for salt mobilisation. The process of HGL determination relies on the integration of a number of factors: geology, soils, slope, regolith depth, and climate; an understanding of the differences in salinity development; and the impacts (land salinity/salt load/water electrical conductivity) in landscapes. Information sources such as soils maps, site characterisation, salinity site mapping, hydrogeological conditions and surface and groundwater data are combined to develop standard templates for each HGL. The focus of this dataset is the Central West LLS region. It comprises introductory information on HGLs; HGL unit descriptions; digital maps and spatial data. Spatial resolution for this product is 1:250 000.

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Additional Info

Field Value
Title Hydrogeological Landscapes of the Central West Local Land Services Region: Nov 2020 (First Edition)
Language English
Licence Creative Commons Attribution 3.0 Australia
Landing Page https://data.gov.au/data/dataset/3b2bb466-3404-4878-bb1e-ebfe49738bf4
Remote Last Updated 23/10/2025
Contact Point
NSW Department of Climate Change, Energy, the Environment and Water
?datansw@customerservice.nsw.gov.au
Reference Period 01/01/2018 - 30/11/2020
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        146,
        -34.15
      ],
      [
        146,
        -30.25
      ],
      [
        150.2,
        -30.25
      ],
      [
        150.2,
        -34.15
      ],
      [
        146,
        -34.15
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal DataNSW

Data Source

This dataset was originally found on DataNSW "Hydrogeological Landscapes of the Central West Local Land Services Region: Nov 2020 (First Edition)". Please visit the source to access the original metadata of the dataset:
https://data.nsw.gov.au/data/dataset/nsw-hydrogeological-landscapes-of-the-central-west-local-land-services-area-nov-2020-first-edit