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  5. 21-07-2023

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G2 Old Coach Road Bridge Princetown

21 July 2023

Observation details

Overview

Estuary Gellibrand River Estuary
Site Old Coach Road Bridge Princetown
Observation ID #15672
Date and Time Friday 21st July 2023 11:15am
Approved Approved

Notes

EC unstable at all levels. Rapid surging if water noted at gauge.

Depth Profiling

Depth m Temperature °C Salinity ppt D.O. mg/L D.O. % sat EC mS/cm Notes
0.1m 9.10 0.30 10.22 93.8 0.43
Previous 10.8 0.3 9.2 88.0 0.4
Median 14.6 1.20 8.27 85.30 1.8
0.5m 9.00 0.30 10.20 93.2 0.43
Previous 11.1 0.7 9.9 95.7 1.1
Median 14.6 1.20 8.21 84.30 1.8
1.0m 9.00 0.30 10.20 93.1 0.44
Previous 10.8 0.3 9.2 87.7 0.4
Median 14.8 2.40 8.23 85.50 4.8
1.5m 8.90 0.30 10.18 92.9 0.48
Previous 10.7 2.1 9.3 88.6 2.9
Median 14.8 2.40 7.98 84.90 4.8
2.0m 8.90 0.60 10.17 92.8 0.85
Previous 10.8 0.3 9.2 87.6 0.4
Median 15.8 28.90 7.84 84.10 43.2
2.5m 8.90 1.20 10.11 92.3 1.75
Previous 12.2 18.4 9.1 89.6 22.4
Median 15.8 28.90 7.83 80.00 43.2
3.0m 8.90 1.50 10.08 92.0 2.17
Previous 10.8 0.3 9.2 87.3 0.4
Median 15.5 30.20 7.00 78.90 45.8
3.5m 8.90 2.40 10.05 91.7 3.15
Previous 13.3 23.0 7.0 70.3 28.2
Median 15.5 30.20 6.73 70.30 45.8
3.9m 9.10 3.70 10.00 91.5 4.75
Previous 16.5 37.5 3.3 36.1 47.2
Median 16.4 37.50 6.73 78.90 46.4

Top-Bottom Sampling

Depth m Turbidity NTU pH
Top 0.1 21 6.7
Previous 0.1 54 6.8
Median 0.1 12 7.0
Bottom 3.9 25 7.3
Previous 4.2 78 7.1
Median 3.9 21 7.1

Other details

Max depth 4.02
Previous 4.25
Median 4.00
Flow estimate Slow

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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