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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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628 results found (Displaying 31 - 40)
ID Date Status Details
#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
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