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Ba1 Jetty near mouth

Active Physico-Chemical 09-10-2013 - 10-05-2023

Balcombe Creek Estuary

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68 results found (Displaying 21 - 30)
ID Date Status Details
#11193 18 Feb 2017 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.9 19.40 34.10 6.31 84.0 51.80
0.5m 9.0 8.0 19.10 34.30 6.02 79.8 52.10
#11202 26 Mar 2017 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.9 21.40 11.40 3.86 44.8 19.75
0.5m 9.0 7.4 21.90 29.10 2.24 30.8 44.99
#11205 29 Apr 2017 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.0 15.40 14.80 7.54 82.6 23.89
0.5m 9.0 7.9 16.50 32.60 5.61 69.6 49.81
#11217 28 May 2017 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.3 13.70 21.60 7.61 83.5 34.30
1.0m 9.0 7.7 14.80 33.40 4.23 57.0 50.90
#11497 24 Sep 2017 Approved Notes:

Thunderstorm 8.10am

 

Battery replaced conclusion 10.00am
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 7.1 14.00 10.60 8.55 88.2 17.92
1.0m 10.0 7.1 12.90 33.30 6.49 74.3 50.80
#11559 22 Oct 2017 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 7.6 18.60 14.50 6.98 82.3 23.45
0.6m 10.0 8.1 17.80 28.80 5.70 71.6 44.45
#12396 22 Oct 2017 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 Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 7.6 18.60 14.50 6.98 82.3 23.45
0.5m 10.0 8.1 17.80 28.80 5.70 71.6 44.45
#11653 26 Nov 2017 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 20.0 7.9 21.20 34.70 6.03 83.0 52.50
0.5m 20.0 7.8 21.20 34.70 5.93 81.6 52.60
#11954 28 Jan 2018 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 7.3 27.00 17.00 2.62 39.2 27.70
0.5m 10.0 6.9 27.00 17.10 3.25 45.8 27.96
#12176 25 Feb 2018 Approved Notes:

No stratification (sea water). Lack of stratification possibly due to the creek being very low (not flowing) for 2 months due to lack of rain. High tides and very strong westerlies (sometimes gale force) have probably pushed the seawater back up the estuary. The estuary flowing in reverse with resultant seawater.

All samples of nearly pure sea water.

Lower than usual pH samples. pH meter checked against standard afterwards.

Met with Peter O'Brien on Monday 19th at Augusta bridge site tot discuss last months data. He as going to investigate storm water drains, including current citation oval damage to explain high B.O.D. and EColi count.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 15.0 6.0 20.30 34.60 2.37 38.7 52.40
0.6m 15.0 6.1 20.10 34.80 2.81 38.1 52.70
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