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  4. 04-04-2019

G2 Old Coach Road Bridge Princetown

4 April 2019

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

Overview

Estuary Gellibrand River Estuary
Site Old Coach Road Bridge Princetown
Observation ID #12819
Date and Time Thursday 4th April 2019 14:30pm
Approved Approved

Notes

AHD G2 0.50                                                                                                   AHD G6   about 0.68 - estimate only as board is covered with silt

Mouth has very wide entrance with sheer 1.2m.high sides along east side of channel after artificial opening on 28-03-19. Small waves were entering.                At G2 bridge the flow as indicated by probe drift was going upstream

Depth Profiling

Depth m Temperature °C Salinity ppt D.O. mg/L D.O. % sat EC mS/cm Notes
0.1m 16.00 1.30 6.71 68.6 2.49 wind S 4 =small waves US to G4
Previous 14.7 1.9 3.5 34.7 3.6
Median 17.1 2.20 6.72 70.40 4.2
0.5m 15.30 1.30 6.35 64.3 2.48
Previous 15.2 2.8 2.3 23.6 5.2
Median 17.4 2.30 6.78 70.40 4.2
1.0m 14.50 1.30 6.18 61.5 2.47 E.C.erratic
Previous 14.2 4.9 0.2 2.4 8.2
Median 17.9 5.40 6.72 69.10 9.4
1.5m 14.10 2.00 5.48 53.2 3.62 " D.O. very erratic
Previous 15.2 3.3 2.2 22.8 6.0
Median 17.9 5.80 6.87 69.80 10.3
2.0m 14.80 6.40 0.08 0.9 10.93 E.C. erratic
Previous 14.3 5.4 0.0 0.3 9.6
Median 17.2 20.20 5.84 63.70 32.2
2.5m 16.00 15.70 1.54 17.1 25.53 "
Previous 17.2 20.0 2.6 30.2 31.7
Median 17.3 21.00 5.88 64.20 33.5
3.0m 16.20 17.10 1.08 12.1 27.63 "
Previous 14.6 11.3 0.0 0.3 19.0
Median 17.6 28.20 3.92 48.20 43.5
3.5m 16.60 20.10 0.06 0.7 32.05 "
Previous 18.1 26.2 0.1 0.6 40.9
Median 17.6 28.20 4.04 49.70 43.7
3.8m 16.60 20.40 0.06 0.7 32.50
Previous 17.6 24.4 3.8 45.9 38.3
Median 17.6 28.20 4.04 49.70 43.7

Top-Bottom Sampling

Depth m Turbidity NTU pH
Top 0.1
Previous 0.1 3 7.0
Median 0.1 9 7.0
Bottom 3.8
Previous 3.9 2 7.7
Median 4.4 9 7.2

Other details

Max depth 3.90
Previous 3.96
Median 4.47
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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