Observation details

Overview

Estuary Barwon River Estuary
Site The Heads
Observation ID #16024
Date and Time Wednesday 21st February 2024 09:20am
Approved Approved

Notes

For some reason, I was unable to calibrate the HACH meter. The option to check standard for LDO101 would not highlight. I turned the meter off numerous times but got the same result. I did check its accuracy by comparing a result of 1413 micro Siemens/cm against the analytical reagent of 1376. Assuming this result was in the ball park, we went ahead with monitoring.
Four fishermen on the jetty - beautiful, still morning.

Water Levels and Tides

Low tide time 15:15

Depth Profiling

Depth m Temperature °C Salinity ppt D.O. mg/L D.O. % sat EC mS/cm Notes
0.1m 21.30 37.90 8.66 98.6 54.10
Previous 19.4 37.2 8.1 88.0 53.2
Median 15.1 37.30 9.98 99.70 53.3
0.5m 21.10 37.90 8.71 98.6 54.10
Previous 17.2 37.9 9.6 99.7 54.2
Median 14.6 37.40 9.98 99.70 53.3
1.0m 21.10 37.90 8.73 98.7 54.20
Previous 19.5 37.1 8.1 88.2 53.0
Median 15.2 37.40 10.00 99.50 53.4
1.5m 21.00 37.90 8.76 98.9 54.20
Previous 17.2 37.9 9.6 99.6 54.2
Median 15.0 37.40 10.00 99.50 53.4
2.0m 21.00 37.90 8.76 99.0 54.20
Previous 17.2 37.9 9.6 99.5 54.2
Median 15.3 37.40 10.30 99.50 53.4
2.5m 21.00 37.90 8.77 99.1 54.20
Previous 18.7 37.2 9.3 99.5 53.2
Median 15.2 37.40 10.30 99.50 53.2
2.7m 21.00 37.90 8.77 99.2 54.20
Previous 14.5 37.6 9.3 92.6 53.7
Median 15.2 37.40 10.34 100.60 53.4

Top-Bottom Sampling

Depth m Turbidity NTU pH
Top 0.1 9 7.8
Previous 0.1 9 8.4
Median 0.1 9 8.0
Bottom 2.7 9 7.9
Previous 1.4 9 8.2
Median 2.3 9 8.1

Other details

Max depth 2.80
Previous 1.50
Median 2.40
Flow estimate Slow
Low tide time 15:15pm

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
Creative Commons CC BY
All content, files, data and images provided by the EstuaryWatch Data Portal and Gallery are subject to a Creative Commons Attribution License

Content is made available to be used in any way, and should always attribute EstuaryWatch and www.estuarywatch.org.au