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  4. 15-12-2017

G4 Bridge at Rivernook

15 December 2017

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

Overview

Estuary Gellibrand River Estuary
Site Bridge at Rivernook
Observation ID #11663
Date and Time Friday 15th December 2017 09:25am
Approved Approved

Notes

Phragmities tall & very prolific encroaching well into river channel. Some falling ito the flow & trapping algal scum & debris

Large no. Army grubs on bridge

Many small fish (3-5 cm long) around streamside veg. some also in main flow

Depth Profiling

Depth m Temperature °C Salinity ppt D.O. mg/L D.O. % sat EC mS/cm Notes
0.1m 19.10 0.10 7.14 77.1 0.27
Previous 18.1 0.1 6.5 68.3 0.3
Median 17.3 0.40 6.47 67.60 0.7
0.5m 19.00 0.10 7.00 75.4 0.28 E.C. erratic
Previous 15.0 0.1 7.4 74.0 0.3
Median 17.3 0.40 6.98 67.60 0.8
1.0m 19.00 0.20 6.99 75.4 0.37 "
Previous 18.1 0.1 6.5 68.1 0.3
Median 17.4 0.40 6.46 67.50 0.8
1.5m 19.00 0.20 6.74 73.3 0.39 "
Previous 15.1 0.1 7.2 72.7 0.3
Median 17.4 0.40 6.90 67.50 0.9
2.0m 19.00 0.20 6.75 73.3 0.36 "
Previous 18.1 0.1 6.6 69.5 0.3
Median 18.1 0.70 6.57 63.40 1.3
2.5m 19.00 0.20 6.68 71.8 0.45 "
Previous 15.1 0.1 7.5 74.4 0.3
Median 18.3 1.00 6.78 63.40 35.3
3.0m 17.40 25.40 4.76 58.0 39.74
Previous 18.1 0.1 6.4 67.8 0.3
Median 18.1 26.80 3.68 46.50 41.9
3.5m 17.10 26.00 4.78 58.6 40.58
Previous 15.1 0.1 7.4 73.2 0.3
Median 18.3 27.00 3.68 46.50 42.8
4.0m 17.10 26.20 4.80 57.5 40.86
Previous 18.1 0.1 6.4 68.1 0.3
Median 18.1 27.30 3.60 45.80 42.4
4.5m 17.00 26.20 4.79 57.6 40.91
Previous 15.1 0.1 7.5 74.6 0.3
Median 16.6 27.30 3.42 39.50 42.4
5.0m 17.30 26.30 4.89 59.4 40.91
Previous 8.8 0.2 7.3 63.4 0.3
Median 16.6 27.80 3.26 43.70 43.1

Top-Bottom Sampling

Depth m Turbidity NTU pH
Top 0.1 10 7.0
Previous 0.1 19 6.8
Median 0.1 9 6.4
Bottom 5.0
Previous 4.6
Median 5.2

Other details

Max depth 5.10
Previous 4.72
Median 5.20
Flow estimate Medium

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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