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Saltwater Intrusion Vulnerability Assessment

Created 15/08/2025

Updated 12/11/2025

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Under the Water Group’s Saltwater Intrusion Vulnerability Assessment project, Water Research Laboratory (WRL), University of New South Wales, were commissioned to develop hydrodynamic models for a series of river estuaries in NSW and to use these to model changes in estuarine salinity dynamics under sea level rise and possible changes to catchment hydrology.
The Tweed, Richmond, Clarence, Macleay, Hastings, Manning and Shoalhaven River estuaries were modelled under this project. For each estuary, three different sea level scenarios were modelled, a present-day sea level, a sea level increase of 0.20 m and an increase of 0.55 m. For the Richmond and Shoalhaven River estuaries, a series of hydrological sensitivity tests were also run to explore system sensitivity to changes in flow which may occur in future due to climate change. For each of the seven River estuaries, the hydrodynamic models, modelling outputs and reports produced by WRL summarising methods and findings are available to download from the Related Datasets section below.

Note: If you would like to ask a question, make any suggestions, or tell us how you are using this dataset, please visit the NSW Water Hub which has an online forum you can join.

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Additional Info

Field Value
Title Saltwater Intrusion Vulnerability Assessment
Language English
Licence Creative Commons Attribution 3.0 Australia
Landing Page https://data.gov.au/data/en/dataset/2be408db-6d9a-4cff-845e-5be10867b5df
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 01/01/1900 - 31/12/2020
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        149,
        -37.7
      ],
      [
        149,
        -28
      ],
      [
        154,
        -28
      ],
      [
        154,
        -37.7
      ],
      [
        149,
        -37.7
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal DataNSW

Data Source

This dataset was originally found on DataNSW "Saltwater Intrusion Vulnerability Assessment". Please visit the source to access the original metadata of the dataset:
https://data.nsw.gov.au/data/dataset/nsw-saltwater-intrusion-vulnerability-assessment