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  4. 21-02-2020

G4 Bridge at Rivernook

21 February 2020

Overview Notes Depth Profile Top-Bottom Documents 3 Chart
Observation details

Overview

Estuary Gellibrand River Estuary
Site Bridge at Rivernook
Observation ID #13583
Date and Time Friday 21st February 2020 09:33am
Approved Approved

Notes

At depth of 4.00 m. probe line was vibrating strongly -possibly because of variable currents going both upstream & downstream, also at that depth the scour hole would have had some effect.

 

Photos of between G5&G4 included

Depth Profiling

Depth m Temperature °C Salinity ppt D.O. mg/L D.O. % sat EC mS/cm Notes
0.1m 17.60 0.30 5.87 61.7 0.53 Cold S.E. wind
Previous 18.2 1.0 5.7 60.9 2.0
Median 14.9 0.20 7.08 70.10 0.4
0.5m 17.60 0.30 5.89 61.8 0.54
Previous 18.1 0.1 7.5 80.1 0.3
Median 14.9 0.20 7.55 73.00 0.4
1.0m 17.50 0.30 5.81 60.8 0.58 E.C. erratic (RANGE)
Previous 18.2 1.1 5.6 59.9 2.3
Median 14.9 0.20 7.08 70.00 0.4
1.5m 17.60 0.40 5.76 60.4 0.74 "
Previous 18.1 0.1 7.4 78.0 0.3
Median 14.9 0.20 7.40 71.70 0.4
2.0m 17.50 0.40 5.72 60.2 0.79 "
Previous 17.0 28.9 3.1 38.3 44.5
Median 15.3 0.20 7.03 69.50 0.4
2.5m 17.50 0.50 5.75 60.3 0.97 E.C. very erratic
Previous 18.1 0.1 7.4 78.1 0.3
Median 15.3 0.20 7.40 70.30 0.4
3.0m 18.30 25.30 1.77 22.3 39.51
Previous 17.0 28.9 3.3 41.0 44.6
Median 15.3 0.20 7.07 70.30 0.8
3.5m 18.20 25.40 1.72 21.3 39.68
Previous 18.1 0.1 7.5 79.2 0.3
Median 15.3 0.20 7.48 72.10 0.8
4.0m 17.80 26.20 0.06 0.8 40.88 Probe vibrating
Previous 16.9 28.9 3.4 42.4 44.7
Median 15.3 0.20 7.13 70.60 0.4
4.5m 17.70 26.80 0.06 0.8 41.66 "
Previous 18.1 0.1 7.3 77.6 0.3
Median 15.3 0.20 7.35 71.10 0.4
4.9m 17.60 26.90 0.06 0.7 41.81 "
Previous 15.2 0.1 8.3 82.3 0.3
Median 15.2 0.20 7.13 70.60 0.4

Top-Bottom Sampling

Depth m Turbidity NTU pH
Top 0.1 10 6.8
Previous 0.1 9 6.7
Median 0.1 11 6.7
Bottom 4.9 12 7.2
Previous 4.8 9 7.4
Median 5.1 10 7.1

Other details

Max depth 5.00
Previous 4.94
Median 5.16
Flow estimate Medium

Observation Documents

Link Date File name Description

Download 		23-02-2020 15:12 Ge_20200221_between_G5_amp_G4_U.S._1154.JPG

Download 		23-02-2020 15:12 Ge_20200221_between_G5_amp_G4_D.S._1155.JPG

Preceding Observations

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