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B1 The Heads

Active Physico-Chemical 09-11-2007 - 02-05-2024

Barwon River Estuary

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225 results found (Displaying 101 - 150)
ID Date Status Details
#11721 17 Jan 2018 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.8 19.80 37.00 7.77 85.3 52.80
2.2m 9.0 7.9 19.10 37.20 7.85 85.2 53.20
#11699 4 Jan 2018 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.7 19.60 37.90 7.27 80.4 54.20
2.7m 9.0 7.8 19.30 38.10 7.24 78.8 54.40
#11676 21 Dec 2017 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.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.0 18.60 37.90 8.33 89.3 54.10
1.9m 9.0 7.8 18.50 37.90 8.33 89.2 54.20
#11644 7 Dec 2017 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.8 18.10 36.90 8.90 96.0 52.70
1.9m 9.0 7.8 18.10 37.00 8.94 96.0 52.80
#11593 15 Nov 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 17.80 37.90 9.58 102.4 54.10
2.9m 9.0 7.9 17.40 38.10 9.96 104.8 54.40
#11560 2 Nov 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 15.60 38.20 9.58 96.8 54.60
3.0m 9.0 8.1 15.40 38.20 9.59 96.3 54.60
#11531 18 Oct 2017 Approved Notes:

Turbidity less than 9
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.9 15.50 37.20 9.95 99.9 53.20
2.6m 9.0 7.9 15.20 37.40 10.01 99.9 53.50
#11487 5 Oct 2017 Approved Notes:

Water brownish colour
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.8 14.70 36.30 9.43 94.3 51.90
2.5m 9.0 7.9 14.20 37.10 9.68 95.1 53.00
#11456 20 Sep 2017 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 70.0 7.9 12.40 21.00 9.93 30.00
2.5m 70.0 7.8 12.30 24.00 10.07 94.0 34.30
#11437 7 Sep 2017 Approved Notes:

Following recent heavy rainfall, the EC/salinity were much lower than usual and the turbidity higher.  The water was a brownish colour.

 
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 12.0 7.8 10.30 17.15 10.00 90.2 24.50
2.4m 12.0 8.1 10.60 29.75 10.65 95.9 42.50
#11406 16 Aug 2017 Approved Notes:

Depth measurements possibly inaccurate due to strong current.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.1 12.50 37.73 10.50 100.5 53.90
2.3m 9.0 8.1 12.40 37.66 10.53 100.9 53.80
#11369 3 Aug 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 12.30 37.87 10.48 98.4 54.10
2.7m 9.0 8.2 12.20 37.87 10.48 97.9 54.10
#11346 19 Jul 2017 Approved

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.8 12.50 38.43 10.06 95.4 54.90
2.7m 9.0 8.1 12.30 38.43 10.15 95.4 54.90
#11321 6 Jul 2017 Approved Notes:

Potential new Estuarywatcher Peter Curtis observed and assisted
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.0 13.00 38.50 10.58 100.8 55.00
3.0m 9.0 8.2 12.90 38.57 10.53 100.0 55.10
#11272 21 Jun 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 14.50 38.29 9.99 97.8 54.70
2.8m 9.0 8.2 14.20 38.36 10.19 98.6 54.80
#11227 1 Jun 2017 Approved Notes:

Very low tide.  Tidal height prediction at pt Phillip Heads = 0.35m

Monitored at south end of jetty due to fast current
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.0 11.60 26.50 10.79 97.8 37.80
2.5m 9.0 7.5 11.40 26.50 10.80 97.3 37.90
#11173 17 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 7.6 15.00 34.50 9.58 95.2 49.30
1.8m 9.0 8.0 14.90 34.40 9.65 95.5 49.20
#11135 4 May 2017 Approved Notes:

Water was brown colour. Turbidity clear so probably tannin in the water.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.5 14.80 27.40 9.75 95.8 39.20
2.7m 9.0 7.4 14.50 27.00 9.86 95.7 38.60
#11098 19 Apr 2017 Approved Notes:

PH device would not calibrate. 
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 17.20 35.98 9.44 97.5 51.40
1.8m 9.0 17.00 35.91 9.43 96.9 51.30
#11058 6 Apr 2017 Approved Notes:

Strong outward current meant observations taken at south end of jetty.

Turbulence around the probes at 0.1m prevented the Hach meter readings from stabilising.

Problems with calibration of pH meter (it would not lock on to pH4).  Thus pH indicator strips used instead of pH meter.

Time of low tide: 12:39

 
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.0 17.80 38.10 8.70 96.0 54.40
2.9m 9.0 8.0 17.60 38.20 8.80 98.2 54.50
#10906 14 Mar 2017 Approved Notes:

Top and bottom sampling was less than 9. (I was unable to enter 'less than' or <)

I am not sure which HACH meter was used.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.7 20.90 38.01 7.34 88.1 54.30
1.6m 9.0 7.7 20.60 38.15 7.32 86.9 54.50
#10862 2 Mar 2017 Approved Notes:

Low tide time: 9:33am

Monitoring done at south end of jetty

Water level is below the bottom of the gaugeboard 
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.8 20.60 38.20 7.30 86.3 54.50
2.5m 9.0 7.7 20.60 38.20 7.25 85.7 54.50
#10810 15 Feb 2017 Approved Notes:

Extremely low tide exposed more sand than we had seen previously opposite the jetty. A warning had been issued to boats to avoid trying to get out through the Heads.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.6 18.90 37.70 7.93 86.3 53.90
1.7m 9.0 7.7 18.90 37.70 7.92 85.9 53.80
#10771 2 Feb 2017 Pending Notes:

Swift current.  All readings taken at south end of jetty due to difficulty in using equipment at the usual site (side of jetty)

Turbidity for top and bottom was <9
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.8 19.30 38.10 8.10 88.1 54.40
2.9m 9.0 7.4 19.20 38.10 8.04 87.5 54.40
#10741 18 Jan 2017 Pending Notes:

Strong tidal flow impeded measurements.

Van Dorn could not settle to bottom. Numerous attempts made to trigger release on Van Dorn. Samples collected were not accurate for depth indications.

We neglected to record D.O.Sat.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.8 7.5 19.40 38.01 8.70 54.30
1.8m 9.8 7.8 19.40 37.94 8.69 54.20
#10664 5 Jan 2017 Pending Notes:

Very fast outflowing current - bottom sample not collected
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.3 20.00 37.52 8.33 92.3 53.60
2.5m 9.0 19.80 37.59 8.42 92.5 53.70
#10752 13 Dec 2016 Approved Notes:

Ive forgotten the name of the ph meter and if it was Hach 1 or 2?
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.5 17.30 37.24 8.82 93.2 53.20
2.5m 9.0 7.9 16.90 37.80 8.90 92.9 54.00
#10585 1 Dec 2016 Approved Notes:

Time of nearest low tide: 08:12

Auto calculation for salinity ppt is x 0.8, but it       should be x 0.7
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.5 17.50 36.47 9.45 100.4 52.10
1.9m 9.0 7.7 17.30 36.61 9.47 99.8 52.30
#10564 23 Nov 2016 Approved Notes:

Top-Bottom sampling - turbidity NTU was <10 on both samples. I was unable to enter this data in the table.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.7 16.20 37.90 9.77 100.1 54.20
2.6m 9.0 7.9 16.00 37.90 9.84 99.9 54.20
#10524 3 Nov 2016 Approved Notes:

#1. Fast outward current. "Running tides". Readings taken at south end of jetty.

 

#2. No bottom sample due to swift current.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 11.5 7.9 14.10 33.95 9.71 94.9 48.50
2.9m 11.5 13.80 34.09 9.84 95.2 48.70
#10532 2 Nov 2016 Pending Notes:

Pair of spoonbills on opposite bank

EC stabiliser not working
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 19.0 7.8 14.10 21.77 9.10 89.2 31.10
1.4m 19.0 7.8 13.80 20.58 9.10 88.8 29.40
#10467 11 Oct 2016 Approved Notes:
  • Blue plastic lid blew off with the wind and got swept out to sea.
  • Water moving fast so was unable to take bottom readings.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 45.0 8.0 14.30 20.37 9.90 97.7 29.10
2.3m 45.0 14.00 20.44 10.06 97.9 29.20
#10525 6 Oct 2016 Approved Notes:

Monitored from Sth end of jetty.  Strong outward flow meant tha the weighted rope and the Hach leads were not vertical, but on an angle.  So depth measure are not precise.

Bottom sample could not be collected due to strong flow.  Van Doorn not suitable under these conditions.

 
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 150.0 6.7 12.50 5.11 8.69 81.9 7.30
3.0m 150.0 12.40 3.73 8.62 80.9 5.33
#10668 19 Sep 2016 Approved Notes:

Time of low tide - 7.11am

 

Monitor flow end of pier

Heavy/fast flow of water
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 90.0 6.9 12.60 0.75 6.89 65.3 1.07
2.4m 90.0 7.1 12.40 0.75 6.85 64.5 1.07
#10607 1 Sep 2016 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.2 13.10 35.98 10.37 99.3 51.40
2.5m 9.0 7.2 12.80 37.80 10.66 100.8 54.00
#10642 15 Aug 2016 Approved Notes:

Kate and Green Army

 

 
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.2 13.70 21.42 12.59 120.2 30.60
2.0m 9.0 8.0 13.30 21.77 12.87 122.0 31.10
#10534 4 Aug 2016 Approved Notes:

EC readings are estimates. Meter value not stable.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 36.0 7.2 11.10 6.51 9.57 86.5 9.30
2.0m 36.0 7.4 10.70 9.52 9.77 87.0 13.60
#10601 8 Jul 2016 Approved Notes:

Bottom sample collected at the south end of jetty. Van Doorn would not function at side of jetty due to swift current.

Low EC/salinity following rainy week.

 
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.4 12.00 29.12 9.51 88.7 41.60
1.5m 9.0 7.6 11.70 29.05 9.60 88.6 41.50
#10344 2 Jun 2016 Approved Notes:

EC checked, but calibration not required
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.4 14.40 38.85 10.13 98.4 55.50
2.7m 9.0 8.4 14.40 38.85 10.07 97.7 55.50
#10290 5 May 2016 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.1 16.80 36.89 9.60 99.8 52.70
2.7m 9.0 8.0 16.50 37.03 9.68 99.6 52.90
#10237 7 Apr 2016 Approved Notes: Salinity checked, but calibration not required
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.6 16.80 38.08 9.85 101.1 54.40
2.0m 9.0 7.8 16.85 38.01 9.77 100.4 54.30
#10180 3 Mar 2016 Approved Notes:

EC checked, but calibration not required.
Monitoring done at southern end of jetty due to swift current sweeping probe again jetty pylons at the side.
Hach batteries replaced prior to monitoring.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.5 20.80 38.22 7.79 87.1 54.60
2.4m 9.0 7.5 20.70 38.15 7.74 86.4 54.50
#10126 4 Feb 2016 Approved Notes: Salinity checked but calibration not required.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.8 19.50 37.94 8.94 97.6 54.20
2.4m 9.0 7.8 19.30 38.01 8.93 97.1 54.30
#10049 7 Jan 2016 Approved Notes: EC checked, but calibration not required.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.7 18.95 38.08 8.99 97.6 54.40
2.5m 9.0 7.7 18.50 38.15 9.11 97.2 54.50
#9972 3 Dec 2015 Approved Notes: Very strong outflowing current. Monitored at southern end of jetty.
Abundant seaweed and seagrass.
Checked salinity, but calibration not required.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.0 16.25 38.08 9.30 94.3 54.40
3.0m 9.0 7.9 16.00 38.08 9.31 93.5 54.40
#10068 9 Nov 2015 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.5 7.7 18.50 37.52 9.77 106.0 53.60
2.4m 10.5 7.8 17.45 37.87 10.42 109.6 54.10
#9934 6 Nov 2015 Approved Notes: Conductivity checked, but calibration not required
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.8 16.25 38.01 9.48 98.0 54.30
2.5m 9.0 7.6 15.95 38.01 9.60 98.4 54.30
#9864 1 Oct 2015 Approved Notes: Bottom sample collected from southern end of jetty, as bad door was taken against jetty pylons at the side due to the strong outward current.
Salinity checked but calibration not required.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.0 13.90 38.43 10.93 105.7 54.90
1.6m 9.0 8.2 13.75 38.36 10.99 105.6 54.80
#10086 12 Sep 2015 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.2 13.10 37.59 10.81 103.0 53.70
2.5m 9.0 8.1 12.80 37.87 11.01 103.7 54.10
#9825 3 Sep 2015 Approved Notes: Bottom sample collected from southern end of jetty because the van Doorn device did not function at the side of the jetty due to the strong outward current.
Salinity checked, but calibration not required.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.6 12.45 37.38 10.12 96.0 53.40
1.4m 9.0 7.7 12.20 37.38 10.23 96.0 53.40
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