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Estuary Drainage Catchments

Created 24/06/2025

Updated 24/06/2025

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Estuary Drainage Catchment is the hydrological boundary of the catchment draining to each estuary in NSW. There are two spatial layers - a line feature class (EstuaryDrainageCatchmentBdy) to record the source of the catchment boundaries linework and a polygon feature class (EstuaryDrainageCatchment) to record the surface area of the catchments. Both these layers are based on the digitising of catchments for the NSW Stressed Rivers Assessments conducted for the water sharing plan process. The 1:25,000 topographic map series and coastline layers from the Land and Property Management Authority were the primary datasets, modified by on-screen re-digitising of the true hydrological boundary adjacent to the estuary mouth and coastline. Stressed Rivers boundaries were modified further up-catchment when obvious errors were detected. Land draining directly to the sea has been labelled as 'nil estuary'. These layers provided the initial linework for developing the Estuary Tidal Limits datasets.

Files and APIs

Additional Info

Field Value
Title Estuary Drainage Catchments
Language English
Licence Creative Commons Attribution 3.0 Australia
Landing Page https://data.gov.au/data/dataset/0a8ec3cb-f6f0-4eae-b981-243ba0d442c8
Remote Last Updated 27/02/2024
Contact Point
Reference Period 12/04/2007 - 24/04/2008
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        153.621636,
        -37.468817
      ],
      [
        153.621636,
        -28.169266
      ],
      [
        149.872924,
        -28.169266
      ],
      [
        149.872924,
        -37.468817
      ],
      [
        153.621636,
        -37.468817
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal DataNSW

Data Source

This dataset was originally found on DataNSW "Estuary Drainage Catchments". Please visit the source to access the original metadata of the dataset:
https://data.nsw.gov.au/data/dataset/nsw-estuary-drainage-catchmentseafb7