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  4. 19-07-2019

G2 Old Coach Road Bridge Princetown

19 July 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 #13203
Date and Time Friday 19th July 2019 09:10am
Approved Approved

Notes

AHD G2  0.71         AHD G6 =  Above boards - extensive wide deep flooding from G6 - G4  resulting from heavy rain fall  -115 ml. recorded at G6 for July

Extreme flow - 4 weights on rope were used but some drift downstream still occurred. Large amount of turbidity & much debris in flow

Depth Profiling

Depth m Temperature °C Salinity ppt D.O. mg/L D.O. % sat EC mS/cm Notes
0.1m 10.00 0.20 7.40 55.5 0.33 No wind & extermely fast flow
Previous 9.0 0.6 9.0 78.1 1.2
Median 17.4 1.90 6.77 70.40 3.4
0.5m 10.00 0.20 7.32 65.0 0.38 E.C. extremely erratic at all depths
Previous 12.5 0.9 7.5 70.6 1.7
Median 17.4 1.90 6.72 70.40 3.6
1.0m 10.00 0.20 7.32 64.9 0.36
Previous 9.0 0.9 8.9 77.2 1.6
Median 17.9 4.90 6.39 69.80 8.2
1.5m 10.00 0.20 7.37 65.4 0.33
Previous 13.2 6.6 2.3 23.2 11.6
Median 17.9 4.90 6.19 69.10 8.2
2.0m 10.00 0.20 7.35 65.2 0.31
Previous 9.0 1.9 8.3 71.8 3.6
Median 17.2 20.00 5.17 59.30 32.0
2.5m 10.00 0.20 7.33 65.4 0.37
Previous 15.5 33.4 0.8 9.2 50.8
Median 17.2 20.00 5.11 58.90 32.0
3.0m 10.00 0.20 7.33 65.3 0.34
Previous 12.4 12.4 5.3 56.4 36.6
Median 17.6 27.90 2.50 31.80 43.2
3.5m 10.00 0.20 7.26 64.9 0.35
Previous 15.9 34.2 0.3 4.3 51.9
Median 17.6 27.90 2.22 27.60 43.2
3.9m 10.00 0.20 7.37 65.3 0.39
Previous 16.6 34.1 2.5 31.8 52.2
Median 17.6 27.90 2.50 31.80 43.2

Top-Bottom Sampling

Depth m Turbidity NTU pH
Top 0.1 35 6.5
Previous 0.1 11 6.8
Median 0.1 9 6.9
Bottom 3.9
Previous 3.1 9 7.4
Median 4.5 9 7.2

Other details

Max depth 4.00
Previous 3.19
Median 4.55
Flow estimate Fast

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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