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B1 The Heads

Active Physico-Chemical 09-11-2007 - 15-05-2024

Barwon River Estuary

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227 results found (Displaying 26 - 50)
ID Date Status Details
#15330 2 Mar 2023 Approved Notes:

pH meter would not calibrate (Error4 message) - instead we used the pH paper kit.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.0 18.80 37.90 9.50 102.7 54.10
2.5m 9.0 8.0 18.70 37.90 9.46 102.1 54.10
#15317 24 Feb 2023 Pending Notes:

Intro to EstuaryWatch with Fed Uni TAFE students
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.6 21.90 7.38 102.3 51.15
2.3m 9.0 7.4 21.70 7.56 104.9 51.78
#15289 15 Feb 2023 Pending Notes:

NB; There was some discrepancy between the pH on the meter and with Litmus paper: Top Depth 6.7, Litmus 8: Bottom Depth 6.6, Litmus 8.

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 8.0 6.7 19.00 37.70 8.60 93.4 53.90
2.7m 8.0 6.6 19.10 37.70 8.48 92.2 53.80
#15262 2 Feb 2023 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.2 19.30 37.80 9.03 100.7 54.00
2.9m 9.0 8.2 19.30 37.80 8.94 99.5 54.00
#15240 18 Jan 2023 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.0 20.40 38.20 8.93 99.3 54.60
2.5m 9.0 7.2 20.50 38.20 8.75 98.2 54.50
#15213 5 Jan 2023 Approved Notes:

Depth at gauge board was 3m
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.0 17.90 36.80 8.49 92.2 52.50
2.4m 9.0 7.8 17.80 40.50 8.68 91.7 57.80
#15194 21 Dec 2022 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.9 17.40 37.00 9.41 99.4 52.90
2.5m 9.0 8.1 17.20 37.70 9.50 99.3 53.90
#15124 16 Nov 2022 Pending Notes:

The river was very muddy and ebbing very quickly.

The river was in flood.

The EC measurements had to be estimated as the readings on the Hach meter would not stabilise.

Wind direction - S/SW

Beaufort Number - Fresh, 4-5

Sea state - rough to very rough









Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 250.0 6.6 14.60 0.50 5.33 52.8 0.78
2.9m 250.0 6.9 14.50 0.60 5.19 51.4 0.80
#15109 3 Nov 2022 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 70.0 7.0 13.60 7.00 8.01 77.0 10.00
2.9m 70.0 7.3 13.50 11.90 8.19 79.0 17.00
#15091 19 Oct 2022 Approved Notes:

EC readings would not stabilise. We took the average of the range.

While water appears cleaner than four days ago, it was still very brown and murky. There was no apparent debris.

The speed of the water flow made it difficult to get accurate depth readings.

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 70.0 7.8 16.30 0.60 4.12 42.2 0.88
3.4m 70.0 7.4 16.20 0.60 3.97 40.5 0.89
#15065 6 Oct 2022 Approved
B1_6_10_2022.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 13.0 7.9 13.40 32.80 10.53 101.3 46.80
2.5m 13.0 7.7 13.10 37.00 10.69 102.4 52.90
#15036 21 Sep 2022 Pending Notes:

NB: Tom was also sampling.

Hach meter took a long while to stabilise on the EC reading.

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 8.9 7.8 14.00 32.60 9.84 96.0 46.50
2.5m 8.9 7.6 13.40 35.60 10.05 96.9 50.80
#14986 1 Sep 2022 Pending Notes:

Water discoloured - very brown

Water sampled and tested at southern end of jetty due to fast current moving the probe

 
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 14.5 7.7 12.20 19.90 9.11 85.2 28.40
2.7m 14.5 7.7 12.00 19.60 9.11 84.3 28.00
#14979 17 Aug 2022 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.6 11.80 27.90 9.36 86.9 39.90
1.9m 9.0 7.8 11.60 27.70 9.35 86.1 39.60
#14867 7 Jul 2022 Approved Notes:

The probes were swept away from the jetty by the fast-flowing current so monitoring was done the at southern end of jetty
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.7 11.60 36.10 10.20 95.2 51.50
2.7m 9.0 7.9 11.60 36.00 10.29 94.9 51.40
#14675 18 May 2022 Approved Notes:

Tide flooding.

NB. Jess Coxon helped with sampling.

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 8.0 7.6 13.00 36.40 9.64 91.6 52.00
2.1m 8.0 7.9 13.10 36.30 9.53 90.6 51.90
#14652 5 May 2022 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.6 13.80 35.10 8.94 86.7 50.10
2.5m 9.0 7.6 14.10 34.30 8.83 86.1 49.00
#14624 20 Apr 2022 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.9 15.40 37.00 7.98 80.1 52.80
1.8m 9.0 8.0 15.60 36.80 7.90 79.6 52.60
#14584 7 Apr 2022 Approved Notes:

Fast flowing current made it difficult to collect a  'bottom' sample.

Observations done at southern end of jetty
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.8 17.40 37.20 8.19 85.2 53.10
2.5m 9.0 7.8 17.30 37.20 8.21 85.2 53.20
#14546 16 Mar 2022 Approved Notes:

Tide coming in.

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.7 19.80 36.80 8.43 92.8 52.50
2.4m 9.0 7.9 19.60 37.30 8.46 92.6 53.30
#14519 3 Mar 2022 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 14.0 7.7 20.80 35.40 7.85 88.4 50.60
1.9m 14.0 7.9 20.70 35.40 7.86 88.3 50.60
#14479 3 Feb 2022 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.4 18.30 35.50 8.19 87.3 50.70
1.9m 9.0 8.1 18.60 35.30 8.10 86.6 50.50
#14464 19 Jan 2022 Approved Notes:

Samples taken from north end of jetty due to strong easterly wind
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.7 19.50 36.40 8.38 91.3 52.00
1.5m 9.0 8.0 19.60 36.40 8.45 92.2 52.00
#14405 15 Dec 2021 Approved Notes:

The 50cm markers of the depth monitor need adjusting.

Turbidity was les than 9 on top and bottom.

We did not do monitoring at B2 (fisherman jetty) and B5 (Taits Point) as the water appeared very dirty due to sewerage discharge into the river as a result of the Barwon Heads sewer system failure event requiring emergency work by Barwon Water over the past few days. We considered the state of the water to be a potential Health and Safety issue.

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.8 18.20 37.80 9.59 102.5 54.00
2.9m 9.0 8.0 17.80 38.10 9.40 99.5 54.40
#14427 2 Dec 2021 Pending
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.8 18.30 38.20 10.55 113.1 54.50
2.5m 9.0 7.5 18.30 38.10 10.60 113.4 54.40
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