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  4. 21-01-2018

G2 Old Coach Road Bridge Princetown

21 January 2018

Overview Notes Depth Profile Top-Bottom Documents 1 Chart
Observation details

Overview

Estuary Gellibrand River Estuary
Site Old Coach Road Bridge Princetown
Observation ID #11731
Date and Time Sunday 21st January 2018 09:40am
Approved Approved

Notes

AHD 0.68  @ 09:40

Recent high temperatures (18 &19 th Jan = 38C.) replaced by cool moist foggy conditions

Very large no of waterbirds on N wetlands. Dragonflies around G2 & estuary

Depth Profiling

Depth m Temperature °C Salinity ppt D.O. mg/L D.O. % sat EC mS/cm Notes
0.1m 21.30 2.40 7.97 91.4 4.50 E wind across site 4
Previous 20.4 2.9 7.1 80.1 5.4
Median 16.8 2.20 6.87 71.00 4.2
0.5m 21.20 2.40 8.20 93.8 4.50
Previous 20.3 5.0 7.8 89.2 8.8
Median 16.0 2.10 6.70 70.70 3.9
1.0m 21.10 2.40 8.13 92.4 4.96
Previous 19.8 25.6 6.3 80.6 40.1
Median 18.0 5.40 6.66 71.00 9.3
1.5m 21.10 17.30 6.88 86.5 28.11 D.O. erratic
Previous 19.6 27.9 7.7 98.1 38.3
Median 16.5 5.30 6.66 70.80 8.3
2.0m 20.20 24.00 5.79 73.5 37.86
Previous 18.5 32.2 3.6 46.0 49.1
Median 16.6 26.20 5.76 64.30 40.7
2.5m 19.00 31.00 2.37 30.5 47.48
Previous 18.2 33.5 6.6 84.2 50.9
Median 16.6 25.50 5.76 64.30 39.9
3.0m 18.70 31.90 1.33 17.1 48.70
Previous 18.0 33.2 1.7 22.2 50.6
Median 16.7 30.10 3.27 38.70 46.4
3.5m 18.20 32.80 0.41 5.2 50.00
Previous 17.9 33.9 5.0 64.0 51.5
Median 16.7 30.10 3.38 40.00 46.4
3.9m 18.00 32.90 0.24 3.1 50.10
Previous 15.2 31.6 3.1 37.8 48.4
Median 16.6 29.90 3.27 38.70 46.0

Top-Bottom Sampling

Depth m Turbidity NTU pH
Top 0.1 9 7.2
Previous 0.1 9 7.0
Median 0.1 10 6.8
Bottom 3.9
Previous 4.1
Median 4.1

Other details

Max depth 4.00
Previous 4.02
Median 4.23
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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