Darwin Harbour report card 2019

Zone 1: Elizabeth River estuary

The 2019 report card overview

Water quality in the Elizabeth River estuary was excellent.

Zone 1 Elizabeth River mapZone 1 Elizabeth River grade wheel

About Elizabeth River estuary

The Elizabeth River estuary contains seagrass beds that provide feeding grounds for dugong and turtles.

Large parts of the estuary are still lined with mangroves but industrial development along the foreshore has reduced mangrove cover in recent years.

The estuary receives urban stormwater runoff from the city of Palmerston during the wet season and dispersed discharge from the Palmerston wastewater treatment plant that enters the harbour in Myrmidon Creek.

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 1 Elizabeth River turbidity
Zone 1 Elizabeth River dissolved oxygen
Zone 1 Elizabeth River chlorophylla-1
Zone 1 Elizabeth River phosphorus  Zone 1 Elizabeth River ammonia  Zone 1 Elizabeth River nitrogen oxide

Supplementary parameters

Zone 1 Elizabeth River salinity Zone 1 Elizabeth River temperature Zone 1 Elizabeth River pH levels

Last updated: 07 April 2020

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