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G4 Bridge at Rivernook

Active Physico-Chemical 21-04-2007 - 15-03-2024

Gellibrand River Estuary

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171 results found (Displaying 131 - 140)
ID Date Status Details
#12857 19 Apr 2019 Approved Notes:

*eErr reading on meter@ 2.50 m down. Meter turned off, probe rinsed with distilled water & re calibrated, after which the reading at 2.50m was re -taken successfully & monitoring continued

Many fish in large schools observed around bridge - going both upstream & downstream
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.4 14.40 1.50 6.93 68.4 2.80
5.0m 9.0 7.1 16.80 33.70 2.11 27.0 51.30
#13074 17 May 2019 Approved Notes:

Large school of Galaxias near bridge. Phragmities extending into river channel

Silt samples collected for R.M.I.T Pesticide testing


Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 6.7 11.30 0.20 8.06 73.8 0.32
5.0m 10.0 6.6 11.30 0.20 7.72 69.9 0.32
#13163 21 Jun 2019 Pending Notes:

Flood water around G4 has drained.
Gp1_20190621.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 11.0 6.9 8.70 0.20 9.28 79.8 0.38
5.0m 11.0 8.70 0.20 9.33 80.1 0.38
#13295 31 Aug 2019 Pending Notes:

Probe attached to weighted rope still drifting in strong current

Flow increased @ 5.00m down

No turbidity or pH taken @ bottom depth because of  very strong flow

Very little visible water cover on flats downstream G4 & Rivernook, but upstream G4 large areas of water remain. Some water  flowing through part of gap in causeway @ G4
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 23.0 6.9 9.70 0.10 9.39 87.3 0.28
5.3m 23.0 9.60 0.10 10.03 88.2 0.28
#13334 20 Sep 2019 Approved Notes:

Very turbulent currents in all directions. Flats have drained but remain water logged. No water across gap in causeway
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 17.0 6.9 11.20 0.10 9.99 90.7 0.30
5.0m 17.0 6.9 11.10 0.10 10.20 92.7 0.30
#13366 18 Oct 2019 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 17.0 6.9 12.80 0.20 8.33 79.2 0.31
5.2m 17.0 7.1 12.80 0.10 8.46 79.9 0.31
#13427 22 Nov 2019 Approved Notes:

no visible flood water around G4 & immediately upstream
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 15.0 6.6 15.20 0.10 8.28 82.4 0.27
5.0m 15.0 6.6 15.20 0.10 8.29 82.6 0.27
#13462 20 Dec 2019 Approved Notes:

Strong NE wind 4

Extreme Phragmities growth filling in channel
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 17.0 6.6 18.20 0.10 7.61 80.4 0.26
4.5m 17.0 6.5 18.10 0.10 7.35 77.6 0.26
#13513 17 Jan 2020 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.7 18.20 1.10 5.69 60.6 2.07
4.8m 9.0 7.4 16.90 28.90 3.44 42.4 44.68
#13583 21 Feb 2020 Approved Notes:

At depth of 4.00 m. probe line was vibrating strongly -possibly because of variable currents going both upstream & downstream, also at that depth the scour hole would have had some effect.

 

Photos of between G5&G4 included


Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 6.8 17.60 0.30 5.87 61.7 0.53
4.9m 10.0 7.2 17.60 26.90 0.06 0.7 41.81
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