019b4bee-6ba6-4ef1-be70-35c0cb0e9304 urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2025-06-23T15:41:42 creation ISO 19115 2016 Secchi Disc data measured during a high rainfall event in Port Jackson, 23 August 2007 019b4bee-6ba6-4ef1-be70-35c0cb0e9304 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. {"type": "Polygon", "coordinates": [[[151.244, -33.87], [151.259, -33.87], [151.259, -33.85], [151.244, -33.85], [151.244, -33.87]]]} 151.244 151.259 -33.87 -33.85 Oceans | Ocean Optics | Secchi Depth Oceans | Water Quality | Toxic Chemicals secchi_depth_of_sea_water 23Aug07_SecchiDisk1.xls documentDigital "23Aug07_SecchiDisk1.xls" reformated 20081106, original file created 20020727 is available on request XLS aodn:water_sampling_port_jackson documentDigital Water Sampling - Port Jackson WMS Unnamed resource documentDigital HTML Unnamed resource documentDigital License Graphic PNG Unnamed resource documentDigital HTML