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  4. 22-10-2017

Ba1 Jetty near mouth

22 October 2017

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

Overview

Estuary Balcombe Creek Estuary
Site Jetty near mouth
Observation ID #12396
Date and Time Sunday 22nd October 2017 09:32am
Approved Approved

Notes

Top - Very brackish. Bottom - sea water

Suspect seawater entered estuary at previous low tide.

1.  seawater wedge has disappeared at the oval site; but remains at the Augusta site where dissolve oxygen is very low

2. Estuary water at jetty is stratified, but top layer very brackish.

3. Overall depth of estuary, measured at jetty (unable to read copy).

Depth Profiling

Depth m Temperature °C Salinity ppt D.O. mg/L D.O. % sat EC mS/cm Notes
0.1m 18.60 14.50 6.98 82.3 23.45
Previous 17.8 28.8 5.7 71.6 44.5
Median 19.1 31.00 5.70 69.60 47.6
0.5m 17.80 28.80 5.70 71.6 44.45
Previous 12.9 32.5 7.9 89.8 49.8
Median 19.1 32.50 5.90 69.60 49.8

Top-Bottom Sampling

Depth m Turbidity NTU pH
Top 0.1 10 7.6
Previous 0.1 10 7.6
Median 0.1 9 7.6
Bottom 0.3 10 8.1
Previous 0.5 10 8.1
Median 0.5 9 7.9

Other details

Max depth 0.36
Previous 0.55
Median 0.50
Flow estimate Slow

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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