Darwin Harbour report card 2019

Zone 7: Shoal Bay

The 2019 report card overview

Water quality in Shoal Bay was excellent.

All indicators complied with Water Quality Objectives.

Zone 7 Shoal Bay grade wheel

About Shoal Bay

Shoal Bay is a shallow embayment with a number of sandbars along the coastal fringe and entrance to tidal creeks.

Shoal Bay receives sediment and nutrient loads from the Howard River catchment during the wet season.

A number of smaller mangrove-lined tidal creeks flow to Shoal Bay, these include King, Micket and Buffalo Creeks.

The Leanyer-Sanderson Wastewater Treatment Plant discharges to Buffalo Creek which flows into Shoal Bay.

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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.

Zone 7 Shoal Bay turbidity
Zone 7 Shoal Bay dissolved oxygen
Zone 7 Shoal Bay chlorophyll-a
Zone 7 Shoal Bay phosphorusZone 7 Shoal Bay ammoniaZone 7 Shoal Bay nitrogen oxide

Supplementary parameters

Zone 7 Shoal Bay salinity Zone 7 Shoal Bay temperature Zone 7 Shoal Bay pH levels

Last updated: 20 August 2020

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