Zone 6: Outer Harbour

Water quality in the Outer Harbour was very good.

All indicators complied with Water Quality Objectives.

Zone 6 - Outer Harbour wheel 2020

About the Outer Harbour

The Outer Harbour is a well-mixed system open to coastal exchange.

It receives urban stormwater from Darwin’s northern suburbs and effluent from the Ludmilla Wastewater Treatment Plant is discharged to this part of the Harbour at the East Point outfall.

Seagrass beds occur off Casuarina Coastal Reserve where dugongs can be spotted regularly.

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The distribution of the data for all parameters is shown here as box and whisker plots.

For report card grades the median of the data (solid line in the box) is compared to the Water Quality Objective (dotted line) for each parameter.

IndicatorPlot
Zone 6 - Outer Harbour turbidity 2020
Zone 6 - Outer Harbour dissolved Oxygen 2020
Zone 6 - Outer Harbour Chlorophyll-a 2020
Zone 6 Outer Harbour phosphorusZone 6 - Outer Harbour ammonia 2020Zone 6 - Outer Harbour NOx 2020

Supplementary parameters

Zone 6 - Outer Harbour salinity 2020 Zone 6 - Outer Harbour temperature 2020 Zone 6 - Outer Harbour pH 2020


Last updated: 12 October 2021

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