Balcombe Creek Estuary

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30 results found (Displaying 1 - 25)
ID Date Status Details
#13633 19 Jan 2020 Pending Notes:

YSI 2030 multi meter is malfunctioning, no DO or salinity results this month.

Have written to Melbourne Water requesting a replacement meter.  

 

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 7.5 22.50
3.0m 10.0 7.4 22.60
#13629 15 Dec 2019 Pending
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 18.60 1.70 3.30
2.5m 10.0 21.50 33.00 50.20
#13626 17 Nov 2019 Pending
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 7.5 14.10 2.90 5.40
2.0m 10.0 7.4 16.90 30.80 47.10
#13622 20 Oct 2019 Pending Notes:

experiencing issues with the meter so no dissolved oxygen readings this month.

Also had problems with the pH meter.

 

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 12.10 0.90 1.75
2.5m 10.0 17.00 31.90 48.70
#13616 29 Sep 2019 Pending
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 15.0 6.5 12.50 12.00 33.70 340.2 8.10
2.5m 15.0 6.6 13.60 28.10 17.10 212.4 18.10
#13316 25 Aug 2019 Pending Notes:

Drain dribbling

bubbles (detergent?) in turbidity tube

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 15.0 6.6 10.10 0.70 31.80 206.0 1.40
2.5m 15.0 6.5 10.60 27.70 24.40 263.0 43.20
#13291 28 Jul 2019 Pending Notes:

Steady flow with drain

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 7.4 9.30 0.90 27.90 244.1 1.83
2.0m 10.0 7.0 11.60 31.00 17.20 192.0 47.80
#13287 23 Jun 2019 Pending
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 7.5 7.80 0.90 23.70 198.0 1.73
1.0m 10.0 7.3 7.80 0.90 18.36 155.8 1.79
#13281 26 May 2019 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 11.60 0.70 0.00 0.0 1.48
2.5m 10.0 17.40 34.40 9.96 0.0 52.20
#12897 28 Apr 2019 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 14.60 22.60 10.90 0.0 35.60
3.0m 10.0 7.0 18.80 36.40 7.00 93.9 54.80
#12791 23 Mar 2019 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 20.0 6.9 21.30 35.60 0.00 0.0 53.90
2.0m 20.0 6.9 20.30 35.40 5.80 79.8 53.50
#13277 24 Feb 2019 Approved Notes:

Bottom slightly H2S

Small fish school, very still

Thin slimy layer

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 15.0 7.1 21.80 34.90 0.00 0.0 52.80
2.8m 15.0 7.2 21.80 36.20 10.70 0.0 54.50
#12675 27 Jan 2019 Approved Notes:

Turbidity measured with turbidity tube <10 at top and <15 at bottom

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 7.3 24.30 22.00 3.35 47.5 34.95
1.5m 10.0 7.2 28.60 34.80 0.95 14.8 52.90
#12417 23 Sep 2018 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 7.9 11.70 3.90 0.00 0.0 6.95
0.5m 10.0 7.4 15.20 30.90 0.00 0.0 47.48
#12394 26 Aug 2018 Pending
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 5.5 7.80 1.60 48.10 409.3 3.01
0.5m 10.0 5.3 10.30 29.80 32.50 352.1 46.10
#12390 22 Jul 2018 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 9.0 9.00 1.00 8.94 77.9 1.84
2.5m 10.0 8.1 12.40 33.40 0.15 1.8 51.00
#12224 27 Jun 2018 Approved Notes:

I have had another look at the dissolved oxygen DO results for 27/6 as we were concerned about the very high readings. I went back to Augusta Street bridge the next day and took another reading which was considerably lower. Unfortunately I didn’t retest the other sites. I now believe that the meter was incorrectly calibrated so I think we should include a note to that effect on the data sheets. On re-reading the calibration data I didn’t allow enough time for the DO reading to stabilise.
I will allow more time for future calibrations. Jan Jones

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 7.6 9.00 1.70 25.80 226.2 3.19
0.5m 10.0 7.4 11.60 33.70 11.34 128.9 51.40
#12166 27 May 2018 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 7.1 10.90 1.20 7.52 67.6 2.35
1.0m 10.0 7.0 17.50 35.60 0.24 3.1 53.70
#12169 22 Apr 2018 Approved Notes:

H2S smell at bottom

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 40.0 7.9 17.20 12.40 13.97 158.0 20.80
3.0m 40.0 6.7 19.10 37.10 0.00 0.0 55.80
#12173 24 Mar 2018 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 8.5 18.20 36.40 3.84 49.6 55.00
2.0m 10.0 8.3 18.20 37.30 2.75 37.1 56.10
#12178 25 Feb 2018 Approved Notes:

Very low dissolved oxygen.

High turbidity in bottom sample.

Hydrogen sulfide smell in bottom sample.

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 20.0 5.9 22.60 33.10 1.20 15.5 50.40
2.0m 20.0 6.9 21.10 34.40 0.80 1.1 52.20
#12181 28 Jan 2018 Approved Notes:

In the bottom 1 m of seawater at august St bridge hydrogen sulfide gas clearly detected. Indication of rotting vegetation, supported by very low and zero DO levels. This could indicate aftermath of high level nutrients (eg sewage spill), which needs to be investigated.

John Inchley rang Shire Health Officer, Peter O'Brien to inform him of data and he said they would investigate further (reported Mon, 29 Jan).

Jan Jones to investigate the use of drone to photograph estuary (and creek) with Balcombe Grammar.

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 20.0 7.7 26.50 0.50 9.26 116.8 0.90
2.0m 20.0 6.9 23.40 29.60 0.00 0.0 45.62
#12139 26 Nov 2017 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 0.0 7.5 20.70 7.50 1.97 22.8 12.20
2.0m 0.0 7.5 22.00 30.40 0.43 5.9 46.70
#11590 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 8.3 14.20 0.80 5.72 56.8 1.61
1.5m 10.0 7.5 18.10 27.90 0.30 3.8 43.20
#11499 24 Sep 2017 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 15.0 7.6 14.10 1.10 7.13 69.8 2.13
2.0m 15.0 7.5 14.90 30.30 4.36 51.9 46.65
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