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  4. 05-09-2009

G6 Great Ocean Road Bridge at Lower Gellibrand

5 September 2009

Overview Notes Depth Profile Top-Bottom Documents 0 Chart
Observation details

Overview

Estuary Gellibrand River Estuary
Site Great Ocean Road Bridge at Lower Gellibrand
Observation ID #2462
Date and Time Saturday 5th September 2009 12:55pm
Approved Approved

Notes

1.AHD.- 3.43 at 09:50
2.Water very dark brown with grass, black wood blossom and twigs floating on surface
3.Max depth aprox. only as weights were insufficient to stop drift. Fow is very fast

Depth Profiling

Depth m Temperature °C Salinity ppt D.O. mg/L D.O. % sat EC mS/cm Notes
0.1m 10.80 0.10 6.50 58.8
Previous 10.9 0.1 10.6 95.5
Median 13.5 0.10 7.61 71.80
0.5m 10.80 0.10 6.44 58.3 Probe drifting
Previous 10.4 0.2 8.0 71.3
Median 13.6 0.10 7.61 71.80
1.0m 10.80 0.10 6.42 58.0
Previous 10.8 0.1 10.7 96.9
Median 13.4 0.10 7.75 71.80
1.5m 10.80 0.10 6.40 57.7
Previous 10.4 0.2 8.0 71.8
Median 13.6 0.10 7.75 71.80
2.0m 10.80 0.10 6.40 57.9 Probe drifting up to 5m.
Previous 10.4 0.2 8.0 71.8
Median 13.2 0.10 7.65 72.10
2.5m not taken because of very strong flow
Previous 10.2 0.1 9.2 82.0
Median 13.4 0.10 7.65 72.70
3.0m Too much drift toward snags
Previous 10.4 0.2 8.0 71.8
Median 9.7 0.20 8.73 75.50

Top-Bottom Sampling

Depth m Turbidity NTU pH
Top 0.1 30
Previous 0.1 40
Median 0.1 20
Bottom 2.5 30
Previous 2.5 50
Median 2.5 30

Other details

Max depth 4.55
Previous 5.00
Median 2.40
Flow estimate Fast

Observation Documents

No documents found for this observation

Preceding Observations

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