From Australian Oceans Data Network
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Secchi Disc data measured during a high rainfall event in Port Jackson, 21 August 2007

Created 23/06/2025

Updated 23/06/2025

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The Sydney Harbour catchment area includes a number of different river systems which drain into the Port Jackson estuary. During high rainfall events the catchment areas behave differently to deliver contaminants into the Port Jackson estuary. Under conditions of high rainfall contaminants are delivered to areas very quickly as freshwater slides over the top of the denser more saline waters of the estuary. Secchi Disc samples were taken along the Port Jackson estuary over four days to determine the behaviour of the freshwater plume as it travels in a layer of freshwater to be flushed or flocculate out at some point in the estuary.

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Additional Info

Field Value
Title Secchi Disc data measured during a high rainfall event in Port Jackson, 21 August 2007
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/en/dataset/4025214c-2718-4bb5-81bd-b37aff8b37ab
Contact Point
Australian Ocean Data Network
g.birch@usyd.edu.au
Reference Period 21/08/2007 - 21/08/2007
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        151.244,
        -33.87
      ],
      [
        151.259,
        -33.87
      ],
      [
        151.259,
        -33.85
      ],
      [
        151.244,
        -33.85
      ],
      [
        151.244,
        -33.87
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Australian Oceans Data Network

Data Source

This dataset was originally found on Australian Oceans Data Network "Secchi Disc data measured during a high rainfall event in Port Jackson, 21 August 2007". Please visit the source to access the original metadata of the dataset:
https://catalogue.aodn.org.au/geonetwork/srv/eng/csw/dataset/secchi-disc-data-measured-during-a-high-rainfall-event-in-port-jackson-21-august-20071