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G4 Bridge at Rivernook

20 March 2026

Observation details

Overview

Estuary Gellibrand River Estuary
Site Bridge at Rivernook
Observation ID #17496
Date and Time Friday 20th March 2026 11:34am
Approved Approved

Notes

Abundant bird life as per Coxons

Depth Profiling

Depth m Temperature °C Salinity ppt D.O. mg/L D.O. % sat EC mS/cm Notes
0.1m 17.70 0.40 4.80 51.0 0.59 EC us/cm
Previous 19.5 0.4 4.5 48.7 0.6
Median 14.3 0.30 8.45 82.70 0.3
0.5m 17.60 0.40 4.78 50.0 0.59
Previous 18.0 1.0 5.1 53.3 1.4
Median 14.2 0.30 8.45 82.70 0.3
1.0m 17.40 0.40 4.71 49.2 0.59
Previous 19.4 0.4 4.3 47.4 0.6
Median 14.2 0.30 8.39 82.80 0.3
1.5m 17.30 0.40 4.74 49.3 0.59
Previous 18.0 1.0 5.0 52.8 1.4
Median 14.2 0.30 8.39 82.80 0.3
2.0m 17.30 0.40 4.71 48.9 0.59
Previous 19.4 0.5 4.4 47.5 0.7
Median 14.2 0.30 8.37 81.50 0.3
2.5m 17.30 0.40 4.68 48.6 0.60 EC ”unstable reading”
Previous 18.9 28.4 3.8 41.0 38.8
Median 14.2 0.30 8.37 81.50 0.3
3.0m 17.70 15.60 0.35 3.7 21.90 EC change to ms/cm reading
Previous 19.0 29.3 0.3 2.8 40.0
Median 14.9 0.50 7.89 80.00 0.4
3.5m 18.40 25.30 0.14 1.4 34.60
Previous 18.6 30.9 0.4 4.4 41.6
Median 14.7 0.50 7.89 80.00 0.4
4.0m 18.40 30.10 0.09 0.9 40.40
Previous 18.3 30.8 0.1 1.1 41.2
Median 15.3 22.80 7.44 79.10 0.4
4.5m 18.20 30.50 0.08 0.9 40.70
Previous 18.5 31.0 0.1 1.6 41.6
Median 15.0 22.80 7.44 79.10 0.4
5.0m 18.00 30.90 0.08 0.8 41.10 unable to measure deeper due to shorter cable lenght
Previous 14.5 0.3 8.6 84.1 0.3
Median 14.4 26.00 7.28 77.30 0.6

Top-Bottom Sampling

Depth m Turbidity NTU pH
Top 0.1 9 7.4
Previous 0.1 10 6.3
Median 0.1 11 6.8
Bottom 6.0 9 6.9
Previous 5.8 9 5.4
Median 5.0 10 6.9

Other details

Max depth 6.07
Previous 5.89
Median 5.15
Flow estimate Pool

Observation Documents

Link Date File name Description

Download 		26-03-2026 13:31 IMG_0974.jpeg gp1_4

Download 		26-03-2026 13:31 IMG_0976.jpeg gp1_4

Download 		26-03-2026 13:31 IMG_0977.jpeg gp1_4

Preceding Observations

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