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  4. 19-04-2019

G4 Bridge at Rivernook

19 April 2019

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

Overview

Estuary Gellibrand River Estuary
Site Bridge at Rivernook
Observation ID #12857
Date and Time Friday 19th April 2019 10:50am
Approved Approved

Notes

*eErr reading on meter@ 2.50 m down. Meter turned off, probe rinsed with distilled water & re calibrated, after which the reading at 2.50m was re -taken successfully & monitoring continued

Many fish in large schools observed around bridge - going both upstream & downstream

Depth Profiling

Depth m Temperature °C Salinity ppt D.O. mg/L D.O. % sat EC mS/cm Notes
0.1m 14.40 1.50 6.93 68.4 2.80
Previous 14.4 1.5 5.5 54.1 2.8
Median 15.3 0.40 6.80 70.10 1.1
0.5m 14.40 1.50 6.97 68.8 2.83 all readings erratic-fish school around probe?
Previous 14.9 0.2 7.1 70.1 0.4
Median 15.3 0.30 6.80 70.10 0.9
1.0m 14.40 1.60 6.94 68.6 2.97 "
Previous 14.4 1.6 5.2 51.7 3.0
Median 15.3 0.40 6.73 70.00 1.1
1.5m 14.40 1.50 6.87 67.9 2.92
Previous 14.9 0.2 7.1 70.0 0.4
Median 15.3 0.30 6.73 70.00 0.9
2.0m 14.50 1.60 6.88 67.9 3.04 All readings very erratic
Previous 16.9 32.5 6.1 61.8 49.6
Median 15.4 0.50 6.81 69.50 3.3
2.5m 16.50 32.30 2.92 36.4 49.23 rErr reading on meter *
Previous 14.9 0.2 7.0 69.5 0.4
Median 15.3 0.50 6.81 69.50 1.0
3.0m 16.60 32.50 2.78 34.6 49.63
Previous 17.2 34.1 5.3 67.7 51.8
Median 15.4 0.50 5.31 66.60 3.2
3.5m 16.70 32.60 2.72 34.1 49.73
Previous 14.9 0.2 7.1 70.3 0.4
Median 15.4 0.50 6.88 66.60 3.2
4.0m 16.80 33.00 2.93 36.7 50.30
Previous 17.2 34.2 5.4 69.0 51.9
Median 16.6 21.00 5.29 53.30 33.5
4.5m 16.80 33.50 2.55 32.1 51.00
Previous 14.9 0.2 7.1 70.6 0.4
Median 16.6 21.00 5.29 53.30 33.5
5.0m 16.80 33.70 2.11 27.0 51.30
Previous 17.2 34.2 5.2 67.2 51.9
Median 17.2 26.30 3.89 44.90 40.9

Top-Bottom Sampling

Depth m Turbidity NTU pH
Top 0.1 9 6.4
Previous 0.1 3 6.7
Median 0.1 14 6.7
Bottom 5.0 9 7.1
Previous 5.7 3 7.1
Median 5.1 9 7.0

Other details

Max depth 5.10
Previous 5.75
Median 5.23
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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