Darwin Harbour report card 2019

Zone 4: West Arm

The 2019 report card overview

Water quality in the West Arm was excellent.

Zone 4 West Arm grade wheel

About West Arm

West Arm has extensive mangrove habitat, inter-tidal mudflats and large inter-tidal areas that are exposed on spring tides.

The West Arm reporting zone includes a series of large tidal creeks and Woods Inlet.

The western boundary of Darwin Harbour catchment comprises only minor rural development on Cox Peninsula.

West Arm is considered to be relatively undisturbed with stream inflows limited to wet season run-off from a largely intact undisturbed catchment.

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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.

Limited data for West Arm did not permit an assessment for dissolved oxygen and other supplementary data for 2019.

Zone 4 West Arm turbidity
Zone 4 West Arm dissolved oxygen
Zone 4 West Arm chlorophyll-a
Zone 4 West Arm phosphorusZone 4 West Arm ammoniaZone 4 West Arm nitrogen oxide

Supplementary parameters

Zone 4 West Arm salinity Zone 4 West Arm temperature Zone 4 West Arm pH levels

Last updated: 20 August 2020

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