Observation details

Overview

Estuary Painkalac Creek Estuary
Site Great Ocean Road Bridge at Aireys Inlet
Observation ID #12322
Date and Time Sunday 12th August 2018 14:00pm
Approved Approved

Notes

pH meter broken so used filter paper

Meter was off when we started the monitoring so had to turn the meter on. It took a long time for the oxygen reading to stabilise so that we could calibrate it but eventually we were able to calibrate the oxygen. However, the oxygen readings were all high so results could be suspect unless they are similar to the readings at the other measuring points. The readings at 0.1 were jumping around quite a lot for all parameters but were behaving more normally at the other depths.

Birds identified included Egret x 2, Swans x 2, Coots x 80-100, Packific black ducks x 8, Cockatoos x 4, Raven sp.

Depth of estuary varying by tide - low at low tide and higher at high tide (12:14 pm on the monitoring day)

Water sample at top depth was noticeably discoloured (muddy brown) but clear at the bottom depth

Depth Profiling

Depth m Temperature °C Salinity ppt D.O. mg/L D.O. % sat EC mS/cm Notes
0.1m 11.80 24.20 11.85 120.8 19.95
Previous 10.3 11.9 13.8 134.5 19.9
Median 15.7 14.30 9.28 93.70 23.6
0.5m 11.80 28.70 11.26 124.5 43.48
Previous 10.7 15.2 11.6 115.5 25.1
Median 16.1 15.20 8.61 89.30 25.1
1.0m 11.90 30.50 11.31 127.5 46.39
Previous 12.9 21.6 9.1 96.0 34.0
Median 16.3 21.60 7.37 91.20 34.0
1.5m 11.90 30.40 11.24 126.0 46.95
Previous 12.5 23.2 8.4 91.2 36.7
Median 18.6 23.20 7.22 90.50 36.7
1.9m 12.10 30.20 10.69 120.4 46.60
Previous 12.5 12.9 9.3 94.5 21.7
Median 18.6 19.60 7.22 90.50 31.5

Top-Bottom Sampling

Depth m Turbidity NTU pH
Top 0.1 13 6.5
Previous 0.1 9 7.3
Median 0.1 9 7.4
Bottom 1.9 9 7.0
Previous 2.4 9 7.2
Median 2.1 14 7.5

Other details

Max depth 2.05
Previous 2.50
Median 2.20
Flow estimate N/A

Observation Documents

Link Date File name Description

Preceding Observations

C Estuary is closed to the sea. O Estuary is open to the sea. P Perched
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