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G5 Coxon's Bridge

Active Physico-Chemical 21-04-2007 - 16-01-2026

Gellibrand River Estuary

252 results found (Displaying 1 - 25)
Date Status Details
16 Jan 2026 Pending
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 11.0 5.8 18.10 0.20 6.93 73.7 0.24
1.2m 11.0 6.1 18.20 0.20 6.82 72.5 0.24
17 Dec 2025 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 23.0 6.1 17.00 0.20 7.90 82.4 0.23
1.5m 23.0 6.6 16.60 0.20 7.96 81.7 0.23
21 Nov 2025 Pending Notes:

Rose Jackson CCMA came along with spare meter while ours is being serviced

Water sitting on flats

23 Black swans

Aquatic plants growing on top of water sitting on flats


Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 35.0 6.3 13.80 0.20 8.80 85.2 0.26
2.9m 35.0 6.7 13.80 0.20 8.54 82.6 0.26
15 Aug 2025 Pending Notes:

Debbie Ferrari sampler also (to be added pls)

Images to be added by Carol
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 5.6 9.40 0.30 11.59 106.6 0.37
1.6m 10.0 5.9 9.40 0.30 11.60 107.3 0.37
18 Jul 2025 Approved

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 15.0 5.3 9.90 0.30 10.89 101.8 0.39
2.9m 15.0 5.9 9.80 0.30 10.76 100.4 0.38
20 Jun 2025 Approved Notes:

Debra Ferrari - sampler also
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 13.0 5.0 9.00 0.20 11.40 104.0 0.34
1.6m 13.0 5.5 9.00 0.20 11.33 103.4 0.34
16 May 2025 Approved Notes:

Kim Morton - sampler also 
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 5.1 12.30 0.20 8.69 86.0 0.28
2.2m 9.0 5.9 12.10 0.20 8.52 83.9 0.28
11 Apr 2025 Approved Notes:

Kim Morton & Nancy McLean - samplers (to be added to portal officially along with Debbie Ferrari (not present today)

Lots of active birdlife present enjoying the water after some rain has stretched out along the wetlands
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.6 16.00 0.20 8.09 88.7 0.28
2.2m 9.0 7.5 14.90 0.20 7.60 80.0 0.28
4 Apr 2025 Approved Notes:

Debbie Ferrari - sampler also

Fair amount of birdlife - many swans but also herons, egrets, ducks etc 
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Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.2 15.80 0.20 6.76 72.3 0.28
2.2m 9.0 6.5 15.90 0.20 6.51 69.7 0.28
21 Mar 2025 Approved

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.5 16.70 0.20 6.33 69.0 0.29
2.0m 9.0 6.7 16.50 0.20 5.97 64.9 0.29
7 Mar 2025 Approved Notes:

Debbie Ferrari - sampler also

Flooding spreading along flats following barring of river mouth over the prior  weekend

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Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.4 19.00 0.20 6.18 70.8 0.28
1.8m 9.0 6.5 18.40 0.20 5.93 67.2 0.28
11 Feb 2025 Approved Notes:

Debbie Ferrari also sampling

Swans in river. Egrets, herons and other bird life returned

Very slow water flow







Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.5 19.10 0.20 5.66 65.3 0.27
1.6m 9.0 6.6 18.80 0.20 5.57 63.8 0.27
21 Jan 2025 Approved Notes:

Fewer waterbirds than usual especially when wetlands full/flooded
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Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.4 21.00 0.20 4.83 57.9 0.27
2.1m 9.0 6.6 20.80 0.20 4.50 53.7 0.27
20 Dec 2024 Approved Notes:

Water very dark coloured

Debbie Ferrari also sampling
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.6 20.00 0.20 6.56 77.5 0.27
1.5m 9.0 6.8 19.60 0.20 6.46 75.4 0.27
22 Nov 2024 Approved
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Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.5 16.70 0.20 7.80 85.1 0.27
1.4m 9.0 6.6 16.20 0.20 7.77 84.4 0.27
11 Oct 2024 Approved Notes:

Debbie Ferrari also sampler for today
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Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.4 12.50 0.20 9.41 93.6 0.29
1.7m 9.0 6.7 12.50 0.20 9.39 93.3 0.29
13 Sep 2024 Approved Notes:

Nancy Maclean also sampling

 

Large sea eagle spotted

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Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 12.0 6.2 11.70 0.20 10.29 100.5 0.32
2.4m 12.0 6.6 11.70 0.20 10.25 99.9 0.32
16 Aug 2024 Approved
gp1_5
gp1_5
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.4 11.50 0.20 10.01 97.5 0.29
1.5m 9.0 6.7 11.30 0.20 10.01 96.9 0.29
12 Jul 2024 Approved Notes:

Slow to medium flow
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.2 9.60 0.20 11.09 103.2 0.32
1.5m 9.0 6.6 9.50 0.20 11.11 102.8 0.32
21 Jun 2024 Approved Notes:

Kim Morton also attended and sampled
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.2 9.20 0.20 11.20 102.6 0.32
1.4m 9.0 6.5 9.20 0.20 11.13 101.9 0.32
17 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 6.5 12.60 0.20 9.52 95.2 0.32
1.5m 9.0 6.6 12.30 0.20 9.49 94.0 0.32
19 Apr 2024 Approved Notes:

Estuary is closed.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.4 15.00 0.20 8.11 85.2 0.31
2.4m 9.0 7.2 14.10 0.20 8.04 83.2 0.31
15 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 6.6 18.30 0.20 6.35 72.2 0.29
1.5m 9.0 7.0 17.90 0.20 6.28 70.7 0.29
16 Feb 2024 Approved Notes:

Sandi Stannard present

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.6 17.30 0.20 7.31 80.7 0.28
1.4m 9.0 6.9 17.30 0.20 7.15 79.0 0.28
19 Jan 2024 Approved
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Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.1 18.20 0.20 7.20 81.0 0.27
1.8m 9.0 6.4 18.40 0.20 7.10 80.0 0.27
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