Zone 3: Middle Arm

Water quality in the Middle arm was very good.

Zone 3 - Middle Arm map 2021

About Middle Arm

Middle Arm comprises the Blackmore and Pioneer River estuaries. The zone has extensive mangrove fringes and intertidal mudflats.

The Blackmore River flows into Darwin Harbour over the whole year, with dry season flows from Darwin River Dam and Berry Springs.

Most of the zone's catchment is rural or savannah woodland.

Long term trend

Zone 1 - Elizabeth River estuary long term trend

Data summary

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.

Indicator Plot(s)
Algae (Chlorophyll-a)
Dissolved oxygen
Nutrients (nitrogen and phosphorus)
Water clarity (turbidity)

Supplementary parameters


Last updated: 14 September 2022

Give feedback about this page.

Share this page:

URL copied!