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B1 The Heads

Active Physico-Chemical 09-11-2007 - 20-11-2024

Barwon River Estuary

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238 results found (Displaying 1 - 50)
ID Date Status Details
#16562 20 Nov 2024 Pending Notes:

We did not take deeper profile readings due to very strong outward tidal flow.

The tide was too fast to get bottom sampling also.

 

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.9 16.10 37.70 9.09 90.8 53.80
2.5m 9.0 16.10 37.70 9.00 89.8 53.80
#16548 7 Nov 2024 Pending Notes:

Flow was too fast to take measurements below the surface. 

2.4m reading was taken from water collected for turbidity and pH measurements. 
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.8 16.50 38.00 9.02 92.3 54.30
2.4m 9.0 8.1 16.20 38.40 9.29 94.7 54.90
#16535 16 Oct 2024 Pending Notes:

Fast incoming tide
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 0.0 8.2 15.30 36.70 9.40 93.0 52.40
2.7m 0.0 8.2 15.10 37.30 9.57 94.4 53.30
#16478 3 Oct 2024 Approved Notes:

First 3 EC measurements are estimates as the meter would not lock in a reading
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.0 14.40 30.10 10.01 96.0 43.00
1.9m 9.0 7.8 14.30 32.80 10.03 96.4 46.90
#16464 5 Sep 2024 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 14.5 8.0 13.00 30.20 9.90 93.4 43.10
2.3m 14.5 7.0 12.80 30.80 9.90 93.3 44.00
#16384 21 Aug 2024 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 0.0 7.3 13.00 33.70 9.98 94.4 48.10
2.2m 0.0 8.0 13.00 35.60 9.90 93.6 50.90
#16367 1 Aug 2024 Approved Notes:

Gauge height reading overlooked 
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.2 11.80 11.17 100.5 51.80
2.8m 9.0 7.4 11.90 11.09 100.1 51.90
#16349 17 Jul 2024 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.3 13.00 37.70 10.42 98.5 53.90
2.7m 9.0 8.3 13.00 37.70 10.39 98.2 53.90
#16250 4 Jul 2024 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.5 12.80 37.60 10.51 96.3 53.70
2.8m 9.0 8.0 13.00 37.60 10.46 96.2 53.70
#16211 19 Jun 2024 Approved Notes:

Units for EC seem to be very low. Need to check the Hach as units of measurement may have changed given we had to calibrate the meter.

Admin - agreed! EC measurements removed.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.2 13.20 0.00 10.09 96.1
2.8m 9.0 8.0 13.30 0.00 9.89 94.7
#16272 6 Jun 2024 Approved Notes:

Unable to conduct any measurements due to renovations of the jetty blocking access to the site.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 13.20 0.00 10.09 96.1
2.8m 13.30 0.00 9.89 94.7
#16170 15 May 2024 Approved Notes:

Low tide - rocks exposed - sand washed away.
Boards and edgings being replaced on pier.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 7.9 14.70 36.70 9.62 92.6 52.40
1.5m 10.0 8.2 14.20 36.50 9.49 91.6 52.20
#16147 2 May 2024 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.0 15.00 35.60 9.52 93.2 50.90
1.6m 9.0 7.8 15.00 35.70 9.45 92.4 51.00
#16137 17 Apr 2024 Approved Notes:

PhysChem data only collected for this site on 17/4.

We called off further monitoring due to persistent rain.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.1 16.70 36.90 9.03 92.1 52.70
2.0m 9.0 8.4 16.80 36.80 8.89 91.1 52.60
#16160 4 Apr 2024 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 17.10 37.50 8.94 92.1 53.60
3.0m 9.0 8.0 17.10 37.40 8.74 90.0 53.40
#16074 20 Mar 2024 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 18.40 38.00 9.04 96.0 54.30
2.5m 9.0 8.6 18.30 38.00 9.03 95.7 54.30
#16046 7 Mar 2024 Approved Notes:

New volunteer Jim... was present but his name is not on the database
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.1 20.00 38.00 8.48 92.8 54.30
2.6m 9.0 8.1 19.90 38.00 8.42 92.0 54.30
#16024 21 Feb 2024 Approved Notes:

For some reason, I was unable to calibrate the HACH meter. The option to check standard for LDO101 would not highlight. I turned the meter off numerous times but got the same result. I did check its accuracy by comparing a result of 1413 micro Siemens/cm against the analytical reagent of 1376. Assuming this result was in the ball park, we went ahead with monitoring.
Four fishermen on the jetty - beautiful, still morning.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.8 21.30 37.90 8.66 98.6 54.10
2.7m 9.0 7.9 21.00 37.90 8.77 99.2 54.20
#16010 1 Feb 2024 Approved Notes:

Sand build up on Ocean Grove side of estuary
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.4 19.40 37.30 8.04 89.9 53.30
1.5m 9.0 8.2 19.50 37.10 8.05 88.2 53.00
#15929 20 Dec 2023 Approved

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.0 17.10 37.90 9.60 99.4 54.20
2.0m 9.0 8.2 17.20 37.90 9.59 99.5 54.20
#15933 7 Dec 2023 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.1 18.60 37.30 9.30 99.9 53.30
3.3m 9.0 8.3 18.70 37.20 9.27 99.5 53.20
#15882 15 Nov 2023 Approved Notes:

We were not able to calibrate the Ph as tube of test liquid was empty. Consequently,  we used Ph strips from the kit.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.8 16.20 37.90 8.75 89.9 54.10
1.9m 9.0 7.9 16.00 37.90 8.73 89.0 54.10
#15886 2 Nov 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 14.50 37.30 9.38 91.8 53.30
1.5m 9.0 8.3 14.50 37.40 9.36 91.4 53.40
#15760 20 Sep 2023 Approved Notes:

Very windy.

Choppy seas.

Only one observation completed on this day as the weather turned nasty.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.9 14.50 37.70 9.34 92.7 53.80
2.0m 9.0 8.1 14.50 37.60 9.32 92.6 53.70
#15739 7 Sep 2023 Approved Notes:

Observations were taken at South end of jetty.

Strong current caused weights and probevto drift
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.2 12.90 37.30 10.28 98.8 53.30
2.5m 9.0 8.2 12.80 37.40 10.30 98.4 53.40
#15716 16 Aug 2023 Approved Notes:

Maintenance crew on pier.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.1 12.20 36.40 10.95 101.3 52.00
2.5m 9.0 7.9 12.60 36.90 10.72 100.6 52.70
#15687 3 Aug 2023 Approved Notes:

EC reading did not stabilise at depths 0.1m -1.5m, so estimated.

EC reading stabilised at depth 2.0m
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 30.0 7.9 12.00 21.00 10.73 98.7 30.00
2.0m 30.0 8.7 12.20 30.70 10.45 96.7 43.80
#15668 19 Jul 2023 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 27.0 8.0 10.30 24.70 10.76 95.3 35.30
2.2m 27.0 8.2 10.50 24.90 10.48 93.3 35.60
#15619 6 Jul 2023 Approved Notes:

No data sheets - made do based off memory. 
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 17.0 8.2 11.50 24.10 10.74 99.5 34.40
1.7m 17.0 8.1 11.50 24.00 10.72 99.3 34.30
#15675 21 Jun 2023 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 25.0 8.2 8.70 17.70 12.08 103.4 25.30
1.8m 25.0 8.3 8.70 17.60 12.01 102.7 25.20
#15592 1 Jun 2023 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.6 14.60 37.90 10.62 104.7 54.20
3.0m 9.0 7.6 14.50 37.90 10.57 104.2 54.20
#15526 17 May 2023 Approved Notes:

Very choppy sea. Wind from the south.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.7 15.00 38.00 10.62 104.4 54.30
2.9m 9.0 7.8 15.20 37.90 10.47 103.3 54.20
#15507 4 May 2023 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.5 14.50 36.20 10.90 100.6 51.70
2.5m 9.0 8.6 15.30 37.20 10.34 103.0 53.10
#15469 19 Apr 2023 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 7.6 16.70 37.50 9.95 102.2 53.60
1.8m 9.0 7.8 16.70 37.60 10.00 102.8 53.70
#15391 6 Apr 2023 Approved Notes:

Turbidity less than 9
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.2 17.50 36.00 9.09 95.8 51.40
2.5m 9.0 8.0 17.50 36.20 9.10 96.0 51.70
#15362 15 Mar 2023 Approved Notes:

Very strong outgoing tide, so consequently hard to measure depths.

pH measured using litmus paper as meter couldn't be calibrated.

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.0 19.10 37.50 7.78 84.9 53.60
2.7m 9.0 8.0 19.00 37.40 7.64 83.1 53.50
#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 Approved 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 Approved 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 8.0 19.00 37.70 8.60 93.4 53.90
2.7m 8.0 8.0 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 Approved 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 Approved 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 Approved 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
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