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Tony and Gill Robinson, Murrimbidgee River

Tony and Gill Robinson, Murrimbidgee River

Bottle number: 8

About the water

A colour photo of Tony and Gill Robinson. Tony is holding the water sample collected at Gundharwar.
Tony and Gill Robinson

Collected at: Murrumbidgee River, Gundharwar, via Michelago, NSW

The site is a straight stretch of the Murrumbidgee River near the village of Michelago, NSW.

35° 44' 28.5" S, 149° 08' 2.5"

View location on Google map

Collected by: Tony and Gill Robinson

Due to the turbidity events we were interested to assist Waterwatch in finding out the causes and fixing the problem.

Water quality:

Turbidity: 20
pH: 7.75
Nitrates: Nitrate <10mg/L
Nitrite <1 mg/L
Salinity: Electrical conductivity 80µS/cm
Phosphates: 0.01ppm
Dissolved oxygen: 8.4ppm – 92%

Turbidity events are the main issue.

ACT Waterwatch says:

As Tony said, turbidity is the main issue on the Murrumbidgee, otherwise the water quality is lovely.
Murrumbidgee River at Gundharwar, via Michelago, NSW.
Murrumbidgee River at Gundharwar, via Michelago, NSW.

About the site

The site is a straight stretch of the Murrumbidgee River near the village of Michelago, NSW. There has been sheep and cattle grazing in the area since the mid to late 1800s. Across the river there is a bush covered property that used to graze sheep and a sheep bridge, now consisting of two lengths of railway track, is downstream and was used to get stock across the river. Since the establishment of Tantangara Dam the River runs at about 30 per cent of its original level. During some summers it stops flowing.

What's going on:

The main vegetation along the steep sides of the river is native but there has been an invasion of willows on the banks and on islands. We have applied for a CfoC (Caring for our Country)Grant to remove these. The turbidity issue is another major concern. The River used to be clear but in the last ten years the turbidity has increased and after rain events can go up to 200NTU. This is mainly due to soil loss on the tributaries and is an issue that needs to be addressed. Fish now are mainly European Carp but Macquarie Perch are still present and platypus have been seen.

Measuring water quality through the Waterwatch program.