Skip to content
 
EstuaryWatch Data Portal
Volunteer Login
  1. Find My WaterWay
  2. Estuaries
  3. Gellibrand River Estuary
  4. G4 Bridge at Rivernook
  5. Observations

G4 Bridge at Rivernook

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

Gellibrand River Estuary

197 results found (Displaying 1 - 25)
Date Status Details
16 Jan 2026 Pending Notes:

Unable to measure beyond 4 meters due to lead lenght - to be replaced

gp1_4
gp1_4
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 5.8 18.10 0.90 7.14 75.8 1.26
4.0m 10.0 5.3 18.20 32.50 3.41 36.3 43.20
17 Dec 2025 Approved Notes:

Unable to measure depth below 4m due to shorter length of leeds following service - await longer leeds
gp1_4
gp1_4
gp1_4
gp1_4
gp1_4
gp1_4
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 19.0 6.8 16.60 0.20 7.76 80.0 0.24
4.0m 19.0 6.9 16.10 0.20 7.81 79.3 0.24
21 Nov 2025 Pending Notes:

Rose Jackson CCMA attended with spare meter

Auto Salinity not functioning here - pls check

Ph as per top as we missed on sheet


Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 24.0 6.8 14.40 9.25 91.0 0.27
5.3m 24.0 6.8 14.50 8.58 84.1 0.27
15 Aug 2025 Pending Notes:

Debbie Ferrari to be added pls
gp1_4
gp1_4
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.3 9.50 0.30 11.54 107.1 0.37
4.8m 9.0 6.5 9.50 0.30 11.44 105.9 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 12.0 5.7 9.80 0.30 10.45 97.4 0.39
5.7m 12.0 5.6 9.70 0.30 10.35 96.5 0.39
20 Jun 2025 Approved
gp1_4
gp1_4
gp1_4
gp1_4
gp1_4
gp1_4
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 14.0 6.0 9.00 0.20 11.27 103.3 0.35
4.9m 14.0 6.0 8.90 0.20 11.15 101.9 0.35
16 May 2025 Approved Notes:

Kim Morton - Sampler (to be added)
gp1_4
gp1_4
gp1_4
gp1_4
gp1_4
gp1_4
gp1_4
gp1_4
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.0 12.70 1.00 7.02 70.1 1.38
5.8m 9.0 6.5 17.90 32.20 0.13 1.3 46.00
11 Apr 2025 Approved Notes:

Kim Morton & Nancy McLean - samplers





Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.4 16.00 0.70 6.76 73.1 1.02
5.8m 9.0 6.4 18.10 32.50 0.11 1.2 46.40
4 Apr 2025 Approved Notes:

Debbie Ferrari - sampler also

gp1_4
gp1_4
gp1_4
gp1_4
gp1_4
gp1_4
gp1_4
gp1_4
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.4 16.20 0.70 5.76 62.0 0.98
5.9m 9.0 6.7 18.20 32.50 0.11 1.2 46.40
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 6.4 16.90 1.10 4.29 47.1 1.51
5.0m 9.0 7.0 18.70 34.90 0.13 1.5 46.50
7 Mar 2025 Approved Notes:

Debbie Ferrari - also sampling

Lots of birdlife - ravens, ibis, herons, swans

gp1_4
gp1_4
gp1_4
gp1_4
gp1_4
gp1_4
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 1.00 5.21 60.1 1.44
5.5m 9.0 6.5 18.90 32.70 0.07 0.8 46.70
11 Feb 2025 Approved Notes:

Debbie Ferrari - sampler




Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.5 19.70 1.80 5.34 62.3 2.50
5.2m 9.0 6.3 18.60 32.30 0.96 10.9 46.10
21 Jan 2025 Approved Notes:

Debbie Ferrari also sampling

Wind up so flow looks slow but is most likely pooled

Strong stagnant odour in bottom depth sample




Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.9 22.00 0.40 3.72 45.8 0.62
5.8m 9.0 5.9 17.70 32.60 0.04 0.4 46.60
20 Dec 2024 Approved Notes:

Debbie Ferrari also Sampler
gp1_4
gp1_4
gp1_4
gp1_4
gp1_4
gp1_4
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.0 20.00 1.10 6.12 72.3 1.62
5.2m 9.0 6.7 18.30 32.20 3.71 42.3 46.10
22 Nov 2024 Approved Notes:

Debbie Ferrari & Nancy McLean - samplers also

gp1_4
gp1_4
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.8 17.00 1.20 7.55 83.4 1.67
4.5m 9.0 7.5 16.50 36.80 7.43 81.5 52.50
11 Oct 2024 Approved Notes:

Debbie Ferrari sampler also

 

Slow/medium flow
gp1_4
gp1_4
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 14.0 7.0 12.60 0.20 9.33 92.9 0.29
4.8m 14.0 7.0 12.60 0.20 9.28 92.5 0.29
13 Sep 2024 Approved Notes:

Nancy Maclean & Debbie Ferrari also sampling


Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 11.0 6.6 11.90 0.20 10.31 101.1 0.33
5.0m 11.0 6.8 11.90 0.20 10.30 100.9 0.33
30 Aug 2024 Approved Notes:

Kim Morton also sampling

Monitored following strong ocean storm surge 

Hard to gauge flow due to wind


Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 11.0 6.1 12.00 0.30 9.98 98.3 0.37
5.5m 11.0 6.6 11.80 0.40 10.04 98.2 0.55
16 Aug 2024 Approved

gp1_4
gp1_4
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.7 11.30 0.20 9.90 95.7 0.30
5.0m 9.0 6.9 11.10 0.20 9.92 95.5 0.30
12 Jul 2024 Approved Notes:

Slow to medium
gp1_4
gp1_4
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.7 9.60 0.40 10.95 102.2 0.51
5.0m 9.0 6.1 11.70 26.00 7.17 70.2 37.00
21 Jun 2024 Approved Notes:

Kim Morton also sampler


Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.8 9.40 0.30 11.00 101.8 0.39
5.0m 9.0 7.0 13.50 31.70 4.83 49.1 45.30
17 May 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 6.7 12.40 0.80 9.26 92.0 1.19
5.0m 9.0 7.2 15.50 33.00 6.47 68.6 47.40
22 Apr 2024 Approved Notes:

We monitored in followed up to forced river opening on 19/4 

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 20.0 7.7 13.80 8.54 89.5 0.36
4.8m 20.0 7.9 13.10 8.76 88.6 0.36
19 Apr 2024 Approved
gp1_4
gp1_4
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.2 14.30 0.50 7.51 77.7 0.74
6.0m 9.0 6.5 18.50 32.10 0.07 0.8 42.90
15 Mar 2024 Approved
gp1_4
gp1_4
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.8 18.20 1.40 6.28 71.2 2.00
5.0m 9.0 7.1 19.60 30.70 3.02 35.3 43.90
We acknowledge and respect Victorian Traditional Owners as the original custodians of Victoria’s land and waters, their unique ability to care for Country and deep spiritual connection to it.
We honour Elders past and present whose knowledge and wisdom has ensured the continuation of culture and traditional practices.
Creative Commons CC BY All content, files, data and images provided by the EstuaryWatch Data Portal subject to a Creative Commons Attribution License Data portal by CeRDI