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G2 Old Coach Road Bridge Princetown

Active Physico-Chemical 20-04-2007 - 21-07-2023

Gellibrand River Estuary

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629 results found (Displaying 1 - 50)
ID Date Status Details
#15672 21 Jul 2023 Approved Notes:

EC unstable at all levels. Rapid surging if water noted at gauge.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 21.0 6.7 9.10 0.30 10.22 93.8 0.43
3.9m 21.0 7.3 9.10 3.70 10.00 91.5 4.75
#15584 16 Jun 2023 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 54.0 6.8 11.10 0.30 9.19 88.6 0.40
4.2m 54.0 7.1 10.80 0.30 9.13 87.3 0.41
#15534 19 May 2023 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 7.0 11.50 0.80 9.88 96.2 1.08
4.0m 10.0 6.9 13.40 22.90 7.00 71.0 28.20
#15490 21 Apr 2023 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 11.0 7.0 14.60 0.70 8.39 87.5 0.95
4.0m 11.0 7.2 16.50 37.80 3.41 37.0 47.50
#15379 24 Mar 2023 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 7.4 17.20 2.10 8.59 95.0 3.01
3.8m 10.0 7.3 18.20 39.20 2.40 27.1 51.00
#15286 10 Feb 2023 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 12.0 7.0 19.70 3.10 7.44 87.2 5.10
3.6m 12.0 7.4 17.00 40.50 5.27 58.0 51.10
#15256 21 Jan 2023 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 11.0 7.4 19.30 2.80 7.49 86.6 4.55
3.7m 11.0 7.6 16.60 39.40 3.10 33.9 49.40
#15182 16 Dec 2022 Approved Notes:

Surface wind making waves
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 21.0 7.1 14.60 1.10 8.97 93.5 1.61
3.5m 21.0 7.7 15.20 39.00 8.04 84.9 47.50
#15143 18 Nov 2022 Approved Notes:

All EC readings failed to stabilize

Raining heavily at this site. L1+Mouth observations abandoned.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 17.0 7.1 14.80 0.20 8.58 89.9 0.30
3.8m 17.0 7.0 14.70 0.20 8.56 89.2 0.34
#15087 21 Oct 2022 Approved
G2_Old_Coach_Rd._Bridge_21st_Oct.2022_.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 30.0 6.8 15.00 0.20 6.39 67.7 0.25
3.7m 30.0 6.7 14.70 0.20 6.42 67.2 0.26
#15026 16 Sep 2022 Approved
G2_Old_Coach_Rd._Bridge_16th_Sept.2022_.pdf.2022_.pdf.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 15.0 7.7 11.40 0.30 9.66 94.1 0.37
3.9m 15.0 6.2 12.10 24.80 9.99 98.3 29.40
#14958 19 Aug 2022 Approved Notes:

No additional weight needed on cables.

Hach not stabilizing for EC across the whole depth profile.

 

Faster flow than usual.

Hach 3 meter used.
G2_Old_Coach_Rd._bridge_19th_aug._2022_.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 50.0 6.8 10.70 0.20 8.44 80.5 0.29
3.9m 50.0 6.8 10.70 0.20 8.33 79.2 0.31
#14909 22 Jul 2022 Approved
G2_22_July_2022_.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 35.0 7.80 10.25 86.3 0.39
3.5m 35.0 7.60 10.18 85.3 0.39
#14695 19 May 2022 Approved Notes:

Sediment floating in bottom sample
G2_19th_May_2022_.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.1 12.50 8.38 81.6 9.82
4.5m 9.0 6.8 15.10 7.79 94.8 49.49
#14632 22 Apr 2022 Approved Notes:

EC erratic
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.4 14.60 6.88 70.4 11.04
4.0m 9.0 7.6 16.40 7.26 91.4 51.36
#14565 18 Mar 2022 Approved Notes:

AHD 0.22 (marker very dirty)

Surface waves due to strong SE wind
Scanned_Document.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.9 19.00 6.68 72.8 2.95
3.4m 9.0 6.7 17.90 6.71 84.2 44.80
#16258 18 Feb 2022 Approved Notes:

EC measurement variable

AHD at finish 0.86
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.4 18.70 8.54 95.4 12.23
4.0m 9.0 7.8 17.10 7.75 97.3 48.41
#14421 17 Dec 2021 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 15.0 7.0 18.60 7.87 84.5 1.24
3.7m 15.0 7.6 15.50 3.59 43.5 47.88
#14363 19 Nov 2021 Approved

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 21.0 6.9 13.90 8.32 80.7 0.31
3.5m 21.0 6.8 13.70 8.18 78.9 0.33
#14290 17 Sep 2021 Approved
Gelli_G2_17_09_21.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 13.0 10.60 9.52 85.8 0.61
3.8m 13.0 12.00 4.55 45.6 20.30
#14261 20 Aug 2021 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 16.0 11.00 8.92 81.0 0.34
3.9m 16.0 10.90 8.80 79.8 0.35
#14175 18 Jun 2021 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 12.0 6.2 10.40 8.01 72.0 0.35
3.8m 12.0 6.2 10.30 7.81 69.8 0.39
#14139 21 May 2021 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 14.5 6.7 11.00 8.80 80.1 0.53
3.8m 14.5 6.9 12.40 5.44 54.5 17.20
#14213 14 May 2021 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 13.0 6.8 11.80 1.20 9.59 94.5 1.72
3.9m 13.0 7.9 14.50 41.20 9.37 97.5 49.10
#14068 16 Apr 2021 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 13.80 7.98 79.7 9.65
4.0m 9.0 7.2 16.60 7.42 92.6 49.54
#14034 26 Mar 2021 Approved Notes:

AHD board dirty and impossible to read
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.2 18.30 7.00 75.7 6.26
3.5m 9.0 7.6 17.30 6.73 85.0 48.94
#13890 27 Nov 2020 Approved Notes:

Training session in new YSI meter
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 19.90 6.92 76.8 3.48
4.3m 16.30 4.91 60.1 46.20
#13648 20 Mar 2020 Approved Notes:

AHD G2 1.48 @ 10.10

High levels of Phos. - top sample 0.9     Bottom  sample 0.14                                             
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.9 17.50 1.80 6.43 67.8 3.48
4.5m 9.0 7.0 17.10 29.40 0.30 0.4 45.26
#13612 12 Mar 2020 Approved Notes:

AHD 1.36 @10.01
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 19.90 2.00 7.70 85.8 3.71
4.7m 17.60 29.70 0.09 0.6 45.68
#13584 21 Feb 2020 Approved Notes:

AHD 0.57 @10:10

Reactive phosphorus - bottom reading  0.06

Turbidity (NTU's) - bottom sample contained large amount of dispersed sedimentary particles

2nd data sheet has been included for comparison with Lt1 & further upstream Latrobe creek from GOR bridge because of raised reactive phosphorus reading @ Lt1 on boardwalk bridge
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.2 18.10 3.10 6.14 66.2 5.69
4.0m 9.0 6.9 17.20 30.30 0.05 0.7 46.55
#13510 17 Jan 2020 Approved Notes:

AHD 0.55       AHD @ G6 unreadable

SE wind pushing waves upstream to G2 & Lt1
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 5.90 7.19 77.5 10.28
3.9m 9.0 7.9 16.40 42.00 4.52 56.2 48.88
#13463 20 Dec 2019 Approved Notes:

 AHD G2  0.48

NE wind 4    Air temp 32C
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 14.0 6.2 18.70 1.10 8.18 88.1 2.18
3.9m 14.0 6.5 15.60 32.10 3.63 41.1 49.10
#13428 22 Nov 2019 Approved Notes:

AHD G2 0.46   G6 1.55 @ 08.30

Reactive Phosphorus test  0.06 @ both top & bottom levels
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 15.0 6.7 15.70 0.20 8.33 82.5 0.42
3.9m 15.0 6.8 15.40 0.40 7.20 69.2 0.84
#13367 18 Oct 2019 Approved Notes:

AHD G2  0.48 @ 10:15       0.58 @ 12:35

Turbidity at top <9 but while seeming clear/ pale at bottom depth was 17 NTU's

G2 results strongly influenced by wind & wave action at mouth. Wave height about 5m. entering against a near gale force wind down channel & moving through a large sand build up in lagoon
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.8 13.00 1.90 8.50 80.5 3.45
3.8m 9.0 7.9 13.70 30.20 7.26 84.3 46.53
#13335 20 Sep 2019 Approved Notes:

AHD   G2 about 0.28  board unreadable

pH top  0.60
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 14.0 7.2 11.30 0.20 10.08 92.2 0.34
3.5m 14.0 7.3 11.10 0.20 9.53 86.9 0.36
#13294 31 Aug 2019 Approved Notes:

AHD G6  2.73 @ 08:00

       G2  0.48 @ 11:01

No weights used @ G2 as flow downstream was greatly reduced from that of G5 & G4
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 24.0 6.8 9.40 0.00 9.78 85.6 0.39
3.9m 24.0 6.9 9.40 0.20 9.40 81.5 0.41
#13203 19 Jul 2019 Approved Notes:

AHD G2  0.71         AHD G6 =  Above boards - extensive wide deep flooding from G6 - G4  resulting from heavy rain fall  -115 ml. recorded at G6 for July

Extreme flow - 4 weights on rope were used but some drift downstream still occurred. Large amount of turbidity & much debris in flow
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 35.0 6.5 10.00 0.20 7.40 55.5 0.33
3.9m 35.0 10.00 0.20 7.37 65.3 0.39
#13164 21 Jun 2019 Approved Notes:

AHD 0.44 @ 11:30  Low tide & reducing flow from upstream with small waves entering at mouth  = no weights were used as probe was not drifting

Phos - 0.045 mg/l
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 11.0 6.8 9.10 0.60 9.02 78.3 1.18
3.5m 11.0 12.40 12.40 5.26 56.4 36.65
#13075 17 May 2019 Approved Notes:

AHD 0.68  @ 11:10

Reactive phosphorus test (top sample)  0.045

Low D.O. below 1.50m down
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.8 12.60 0.90 7.69 72.7 1.68
3.9m 9.0 7.4 15.90 34.20 0.35 4.3 51.90
#12858 19 Apr 2019 Approved Notes:

AHD  G2 0.66
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.8 15.20 3.10 7.09 72.3 5.66
4.0m 9.0 7.3 16.60 34.40 2.38 30.1 52.20
#12844 11 Apr 2019 Approved Notes:

AHD G2 1.19   G6 1.25 @11:45

 
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 15.40 6.70 4.88 50.8
4.5m 15.80 34.80 7.05 88.0
#12819 4 Apr 2019 Approved Notes:

AHD G2 0.50                                                                                                   AHD G6   about 0.68 - estimate only as board is covered with silt

Mouth has very wide entrance with sheer 1.2m.high sides along east side of channel after artificial opening on 28-03-19. Small waves were entering.                At G2 bridge the flow as indicated by probe drift was going upstream
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 16.00 1.30 6.71 68.6 2.49
3.8m 16.60 20.40 0.06 0.7 32.50
#12812 2 Apr 2019 Approved Notes:

AHD G2  0.53 @ 14:00        G6 0.88 (estimate only as board is covered with silt)

Many small fish visible in shallow water & larger ones 5-15 cm. actively swimming around bridge
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 14.90 1.80 3.61 36.3 3.32
3.9m 14.60 11.30 0.03 0.3 19.00
#12805 1 Apr 2019 Approved Notes:

All readings down to 4.00 m were extremely erratic.                                         Flow was extremely strong & probe had to be attached to weighted rope.               

Rope & weights came up covered in black rotting vegetation & black slimy silt

AHD 1.33 @ 13:20    G6   1.52  @ 13:00                                                   GOR   AHD  from G2   1.22@ 15:50

GOR sheet (Latrobe creek - attached for comparison)                              Monitoring was done from downstream side of bridge as the very strong flow took the probe & weighted rope far under the bridge out of sight. Rope, weights & probe covered with black decaying vegetation
G2_20190401_IMG.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 15.20 2.60 2.40 24.4 5.11
4.5m 18.50 28.40 0.04 0.4 43.95
#12800 31 Mar 2019 Approved Notes:

AHD G6    1.68 @11:00     G2  1.68 @ 11:45

GOR sheet attached for comparison
GOR_20190331__0001.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 15.00 1.90 7.06 71.0 3.49
5.0m 18.60 28.40 0.05 0.6 43.94
#12804 28 Mar 2019 Approved Notes:

AHD 1.66 @11:20

Flow reddish with small reddish brown pieces of algae floating on surface of water  (coming from Latrobe creek)  Latrobe creek data was sampled from GOR

Attached data sheet from G.O.R (Latrobe creek)
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 17.00 2.00 4.81 50.5 3.70
5.0m 18.80 28.50 0.04 0.5 44.03
#13006 22 Mar 2019 Approved Notes:

IEC Site. Mouth Closed.

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 3.3 7.0 21.00 1.60 6.63 75.3 3.06
4.8m 3.3 7.7 19.10 29.60 0.43 5.6 45.66
#12773 19 Mar 2019 Approved Notes:

AHD  G2 1.52    G6  1.48   @ 10:30

Water over deck of fishing platform. Small areas of water at side of OOR & OCR with some areas at SW end of camp ground

Measurements were taken from GOR over Latrobe creek (attached as data sheet) showing lower levels of D.O. in wetlands
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 21.10 2.20 6.44 73.4 4.11
4.9m 18.90 29.00 0.00 0.3 44.73
#12766 14 Mar 2019 Approved Notes:

AHD G2 1.46    G6  1.41 

 
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 18.70 1.40 5.62 60.8 2.69
4.8m 19.20 29.90 0.04 0.5 44.68
#12763 13 Mar 2019 Approved Notes:

AHD G2 1.44  G6   1.42@ 13:35

Mouth barred -berm created by very rough seas. Some waves currently overtopping berm & reaching estuary with some salt return but no fresh outflow
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 17.40 1.70 4.76 50.2 3.32
4.8m 19.30 29.00 0.04 0.5 44.75
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