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  4. 21-12-2017

B1 The Heads

21 December 2017

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

Overview

Estuary Barwon River Estuary
Site The Heads
Observation ID #11676
Date and Time Thursday 21st December 2017 09:30am
Approved Approved

Notes

After the initial sampling a white viscous scum appeared on the water surface. We took a second surface sample and the turbidity reading had increased dramatically to 24 NTU.

Water Levels and Tides

Low tide time 09:00

Depth Profiling

Depth m Temperature °C Salinity ppt D.O. mg/L D.O. % sat EC mS/cm Notes
0.1m 18.60 37.90 8.33 89.3 54.10
Previous 18.1 36.9 8.9 96.1 52.7
Median 15.3 37.70 9.74 96.60 53.8
0.5m 18.90 37.90 8.26 89.3 54.10
Previous 17.5 37.9 9.8 103.3 54.2
Median 15.3 37.87 9.77 96.60 54.1
1.0m 18.60 37.90 8.33 89.3 54.10
Previous 18.1 37.0 8.9 96.0 52.8
Median 15.3 37.70 9.66 96.00 53.8
1.5m 18.60 37.90 8.33 89.2 54.20
Previous 17.4 38.0 9.9 104.0 54.3
Median 15.3 37.87 9.86 95.80 54.1
1.9m 18.50 37.90 8.33 89.2 54.20
Previous 15.4 38.2 9.6 96.9 54.6
Median 14.9 37.70 9.66 95.80 53.8

Top-Bottom Sampling

Depth m Turbidity NTU pH
Top 0.1 9 8.0
Previous 0.1 9 7.8
Median 0.1 9 7.8
Bottom 1.9 9 7.8
Previous 1.9 9 7.8
Median 2.6 9 7.9

Other details

Max depth 2.00
Previous 2.00
Median 2.70
Flow estimate Fast
Low tide time 09:00am

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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