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  4. 22-09-2017

G2 Old Coach Road Bridge Princetown

22 September 2017

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

Overview

Estuary Gellibrand River Estuary
Site Old Coach Road Bridge Princetown
Observation ID #11464
Date and Time Friday 22nd September 2017 12:20pm
Approved Approved

Notes

AHD 0.8 @ 12:18  Board covered with silt- almost unreadable

Flow affect on probe was checked by attachment to weighted rope at lower depth & found to have correct reading previously

Depth Profiling

Depth m Temperature °C Salinity ppt D.O. mg/L D.O. % sat EC mS/cm Notes
0.1m 12.20 0.10 7.59 71.0 0.27
Previous 10.6 0.1 7.8 70.7 0.4
Median 17.1 2.60 6.87 71.90 5.1
0.5m 12.10 0.10 7.88 72.8 0.27
Previous 9.0 0.2 9.7 84.0 0.4
Median 17.1 2.60 6.78 71.90 5.1
1.0m 11.90 0.10 7.91 73.0 0.27 probe starting to drift
Previous 10.6 0.2 7.8 70.8 0.3
Median 17.8 7.00 6.77 74.20 9.8
1.5m 11.90 0.10 7.93 73.4 0.27 Flow reduced. Probe travelling U/S
Previous 8.9 0.2 9.7 83.6 0.4
Median 17.8 7.00 6.66 74.20 9.8
2.0m 11.90 0.10 7.92 72.9 0.27 "
Previous 10.6 0.2 7.7 69.0 0.3
Median 16.7 28.10 5.92 65.60 43.5
2.5m 11.90 0.10 7.92 73.1 0.27 Flow increased. Probe drift D/S
Previous 8.9 0.2 9.6 83.0 0.4
Median 16.7 28.10 5.76 64.30 43.5
3.0m 11.90 0.10 7.88 73.0 0.27 "
Previous 10.6 0.2 7.3 66.1 0.3
Median 16.7 30.50 3.42 40.00 46.8
3.5m 11.90 0.10 7.92 73.4 0.27 Probe drift strong
Previous 8.9 0.2 9.3 80.4 0.4
Median 17.1 30.60 3.42 40.00 47.0
4.0m 11.90 0.10 7.98 74.0 0.27
Previous 8.8 0.2 7.2 61.6 0.5
Median 17.9 31.20 1.37 17.80 47.8
4.2m 12.00 0.10 7.89 73.4 0.27
Previous 10.3 1.9 6.0 53.8 3.5
Median 17.9 31.20 1.05 13.40 47.8

Top-Bottom Sampling

Depth m Turbidity NTU pH
Top 0.1 20 6.8
Previous 0.1 40 6.8
Median 0.1 10 6.8
Bottom 4.2
Previous 3.9
Median 4.1

Other details

Max depth 4.30
Previous 3.95
Median 4.17
Flow estimate Fast

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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