Observation details

Overview

Estuary Gellibrand River Estuary
Site Old Coach Road Bridge Princetown
Observation ID #2408
Date and Time Saturday 29th August 2009 13:38pm
Approved Approved

Notes

1.Water very dark brown. Swirling around bridge with different currents clearly visiable
2. Probe drifing up to 2m sometimes, then not at all.
3. Bottom turbidity reading not taken as bracket/ bottle came off the pole and was left at the bottom of the river.

Depth Profiling

Depth m Temperature °C Salinity ppt D.O. mg/L D.O. % sat EC mS/cm Notes
0.1m 11.30 0.20 9.61 89.8 extremely difficult to get average readings
Previous 10.8 0.6 7.7 69.6
Median 16.0 3.50 6.58 70.10
0.5m 11.20 0.20 9.90 90.7 Sometimes probe drifting, other times not at all
Previous 10.1 0.2 8.9 78.9
Median 16.2 3.60 6.58 70.40
1.0m 11.20 0.10 9.91 91.4 2nd profile entered
Previous 10.7 0.8 7.4 67.1
Median 16.9 14.90 6.26 68.40
1.5m 11.10 0.20 9.98 91.3
Previous 10.0 0.2 8.7 77.3
Median 17.2 15.70 6.26 69.50
2.0m 11.10 0.20 9.93 90.7
Previous 11.3 19.1 5.9 63.7
Median 16.8 28.90 5.42 64.70
2.5m 11.10 0.20 9.89 89.9
Previous 10.0 0.2 8.5 75.6
Median 17.1 29.40 5.42 66.00
3.0m 11.10 0.20 9.85 89.1
Previous 12.8 29.7 5.5 62.0
Median 16.8 31.20 4.58 50.20
3.5m 11.20 0.20 9.80 90.3
Previous 10.0 0.2 8.3 75.0
Median 16.8 31.30 4.58 50.20

Top-Bottom Sampling

Depth m Turbidity NTU pH
Top 0.1 40
Previous 0.1 30
Median 0.1 15
Bottom
Previous 3.6 40
Median 3.4 20

Other details

Max depth 3.78
Previous 3.59
Median 3.50
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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