Saltwater Intrusion Vulnerability Assessments published to SEED

We’re pleased to announce the release of the Saltwater Intrusion Vulnerability Assessment datasets on the SEED Open Data Portal.

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We’re pleased to announce the release of the Saltwater Intrusion Vulnerability Assessment datasets on the SEED Open Data Portal.

These datasets provide hydrodynamic modelling outputs for seven NSW estuaries — Shoalhaven, Manning, Hastings, Macleay, Clarence, Tweed and Richmond. The models, developed in collaboration between DCCEEW and UNSW Water Research Laboratory (WRL), investigate changes in salinity dynamics under projected sea level rise and possible changes to catchment hydrology.

More details:

  • Estuaries modelled: (i) Shoalhaven, (ii) Manning, (iii) Hastings, (iv) Macleay, (v) Clarence, (vi) Tweed, (vii) Richmond
  • Scenarios: Present day, +0.20 m sea level, +0.55 m sea level
  • Additional tests: Hydrological sensitivity scenarios for Richmond and Shoalhaven
  • Package contents:
    • WRL technical report (PDF)
    • Metadata Statement (PDF)
    • Hydrodynamic model run files (ZIP)
    • Salinity model output data (ZIP)

Why it matters:
Saltwater intrusion is a critical issue for estuary health, freshwater availability, and community resilience under climate change. These datasets support evidence-based planning by showing how estuarine salinity may change in response to sea level rise and hydrological shifts.

Explore the datasets on SEED:

We invite you to contribute to this forum!
We’d love to hear your thoughts on how these resources could support your work or research. Click Reply below to share your feedback, comments, and questions, and help shape better water management strategies for NSW by engaging with this SEED forum and dataset.

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Datasets

Saltwater Intrusion Vulnerability Assessment - Shoalhaven River Estuary

Overview

This asset relates to the Shoalhaven River and consists of the outputs from hydrodynamic modelling undertaken by the University of New South Wales Water Research Laboratory (WRL) to investigate changes in salinity dynamics under sea level rise and possible changes to catchment hydrology. 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. A series of hydrological sensitivity tests were also run to explore system sensitivity to changes in flow and changes in freshwater flushing events. This asset compris...
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This asset relates to the Shoalhaven River and consists of the outputs from hydrodynamic modelling undertaken by the University of New South Wales Water Research Laboratory (WRL) to investigate changes in salinity dynamics under sea level rise and possible changes to catchment hydrology. 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. A series of hydrological sensitivity tests were also run to explore system sensitivity to changes in flow and changes in freshwater flushing events. This asset comprises the full technical report written by WRL, timeseries data for each model scenario run, and all the run files required to re-run the model using RMA software. ----------------------------------- 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](https://water-hub.seed.nsw.gov.au/thread/search) you can join.
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12 Sep 2025
Saltwater Intrusion Vulnerability Assessment - Shoalhaven River Estuary
  • PDF
  • ZIP