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G2 Old Coach Road Bridge Princetown

20 March 2026

Observation details

Overview

Estuary Gellibrand River Estuary
Site Old Coach Road Bridge Princetown
Observation ID #17498
Date and Time Friday 20th March 2026 10:10am
Approved Approved

Notes

Measured Latrobe Creek and Old Coach Rd bridge first due to artificial opening scheduled for midday

Depth Profiling

Depth m Temperature °C Salinity ppt D.O. mg/L D.O. % sat EC mS/cm Notes
0.1m 19.20 1.40 5.84 63.0 2.06 EC us/cm
Previous 20.7 1.5 5.1 57.6 2.2
Median 14.7 2.10 8.28 85.90 3.0
0.5m 19.20 1.50 5.72 61.7 2.08
Previous 18.5 1.9 8.1 85.7 2.7
Median 14.6 2.10 8.30 86.00 3.0
1.0m 19.10 1.50 5.56 60.0 2.10
Previous 20.6 1.7 6.3 70.1 2.5
Median 15.2 3.90 8.38 89.70 6.9
1.5m 19.10 1.40 4.86 52.4 2.06
Previous 18.0 4.4 9.9 104.2 6.9
Median 14.8 4.40 8.47 90.20 6.9
2.0m 19.20 1.60 5.25 56.7 2.25 EC change to ms/cm
Previous 20.5 12.4 0.4 4.2 18.9
Median 16.0 30.50 8.21 84.80 41.5
2.5m 19.40 2.60 0.64 7.0 4.37 EC “unstable reading”
Previous 19.0 30.5 6.0 64.1 41.5
Median 15.8 31.60 8.36 85.40 41.5
3.0m 19.00 19.80 0.17 1.9 28.10
Previous 19.7 28.7 23.0 2.5 39.9
Median 15.5 34.40 7.22 78.70 47.5
3.5m 18.70 31.90 0.11 1.1 42.90
Previous 15.0 34.4 5.8 63.5 27.0
Median 15.2 34.40 7.22 78.90 47.5

Top-Bottom Sampling

Depth m Turbidity NTU pH
Top 0.1 9 7.0
Previous 0.1 9 6.9
Median 0.1 11 7.1
Bottom 5.0 100 6.2
Previous 4.8 60 6.3
Median 3.9 16 7.1

Other details

Max depth 5.05
Previous 4.90
Median 4.00
Flow estimate Pool

Observation Documents

Link Date File name Description

Preceding Observations

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