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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 51 - 100)
ID Date Status Details
#12783 11 Mar 2019 Approved Notes:

AHD G2 1.56       AHD G6   1.52

Water only at side of road @ OOR flood markers & between GOR & camp ground Camp ground has some areas of visible water at SW end. Track to ocean car park has some deep areas of water in depressions
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
#12757 10 Mar 2019 Approved Notes:

AHD G2 1.52 @ 11:40   G6  1.48 @ 09:55

10 ml rain over night
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 19.40 2.30 5.94 65.5 4.39
4.9m 18.90 29.50 0.04 0.5 45.39
#12756 9 Mar 2019 Approved Notes:

AHD G2  1.51@13:01      G6 1.46 @ 10:00

Bottom turbidity contained many clearly visible small particles
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.8 19.50 2.10 5.94 65.5 4.01
4.8m 9.0 7.1 19.10 29.20 0.04 0.5 45.00
#12752 6 Mar 2019 Approved Notes:

AHD G2 1.49 @ 12:20   G6 1.45 @ 10:10

 
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 19.70 2.80 6.43 71.6 5.14
4.8m 19.30 29.40 0.06 0.7 45.30
#12733 28 Feb 2019 Approved Notes:

AHD G2  1.45 @ 09:30    G6   1.40 @ 07:30     Air temp 33C.

Water cover over most flats up to G5  - No water over any roads
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 22.40 2.20 7.06 83.0 4.11
4.8m 0.00 29.50 0.05 0.5 45.40
#12719 22 Feb 2019 Approved Notes:

AHD G6  1.36 @10:25    G2 1.39/40  @ 12:55
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 19.80 1.30 6.83 75.3 2.54
4.7m 19.20 29.40 0.08 1.1 45.25
#13005 15 Feb 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 4.4 6.7 18.60 1.40 7.09 76.3 2.67
4.5m 4.4 7.0 20.40 30.00 1.76 22.9 46.15
#12677 30 Jan 2019 Approved Notes:

AHD G6 1.02 @ 09:45        G2  1.02  @ 10:51

Large no. of small fish visible in water around G2 bridge
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 23.40 5.80 7.42 90.0 10.23
4.4m 18.90 29.80 4.47 57.0 45.83
#13004 18 Jan 2019 Approved Notes:

IEC Site. Mouth Open.

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 4.9 7.1 22.70 2.30 7.68 90.0 4.26
4.0m 4.9 7.1 17.80 32.30 3.54 44.5 49.46
#12633 10 Jan 2019 Approved Notes:

AHD G6  0.86 @ 10:15

Small ripples from SE travelling to G2 fishing platform. Algae forming on streamside veg near auto monitor
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.8 18.90 3.30 6.53 70.6 6.14
4.0m 9.0 7.6 17.50 30.50 6.05 75.9 46.87
#13003 21 Dec 2018 Approved Notes:

IEC site Mouth Open

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.3 7.0 18.10 0.90 7.69 81.8 1.83
3.6m 10.3 7.2 16.40 33.60 2.22 27.6 51.16
#12576 8 Dec 2018 Approved Notes:

AHD G2 0.56 @ 09:50     G6  0.98 @ 09:40

SE Wind bringing waves to G2 making flow estimate very difficult

After a short duration closure the mouth opened naturally on 06-12-18,             40C. heat on 07-12-18.

Low water level in estuary with sand bar partially exposed & drying algae draped over veg. at E side of estuary. Waves entering shallow over wide area / dense sea mist & air temp about 18C.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 20.50 2.60 6.89 77.1 4.79
3.9m 16.10 31.10 6.35 77.7 47.79
#13002 23 Nov 2018 Approved Notes:

IEC Site. Mouth Open.

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 8.9 7.6 15.40 1.70 9.02 91.5 3.20
4.2m 8.9 8.3 15.50 33.60 8.25 101.4 51.21
#12538 16 Nov 2018 Approved Notes:

AHD 0.58

Large amount of silt settling rapidly  in turbidity / pH  sample
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 13.0 7.1 17.10 3.80 7.28 77.7 6.89
3.8m 13.0 7.8 15.90 33.30 6.81 87.7 50.60
#12528 13 Nov 2018 Approved Notes:

AHD G2 0.34  @ 13:00     G6 1.01 @ 11:17 AHD boards partially obscured with silt
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 17.50 1.00 7.40 77.9 2.03
3.6m 15.80 28.60 6.82 82.0 44.28
#12526 11 Nov 2018 Approved Notes:

AHD G6 1.64 @ 10:54  G2  1.54 @ 10;03

Mouth was actually open during monitoring. Fishermen reported estuary water trickling out at night on 10-11-18 & open am. on 11-11-18.                                  Mouth was perched on 04-11-18, closed on 05-11-18  & opened again on 11-11-18
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.6 16.50 1.00 6.33 65.3 2.02
4.9m 9.0 7.0 14.50 28.80 1.23 14.3 44.53
#12452 19 Oct 2018 Approved Notes:

No weights were used as flow was not as strong as upstream
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 21.0 6.2 15.80 0.80 7.06 71.8 1.58
3.8m 21.0 7.0 13.20 13.20 2.18 24.5 41.06
#12405 21 Sep 2018 Approved Notes:

AHD   G2  0.49 @ 10:23    G6 1.95 @  08:15

Bearer under bridge fractured 31-08-2018 (bridge closed) repair completed to 15 T load limit on 20-09-18
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 12.0 6.9 10.80 0.40 9.27 84.1 0.73
3.8m 12.0 7.0 11.60 15.20 5.71 63.0 24.91
#12340 17 Aug 2018 Approved Notes:

AHD G6 over AHD board  @  07:48      G2 0.65  @ 09:35

Turbidity G6  34 NTUs pH 6.8

Very cold North wind 5

Monitoring difficult because of  very fast flow. Probe attached to rope with 4 weights. The use of weights raised the height of the probe above 10 cm  from the bottom both at G2 & Lt1

The turbidity water sampler was possibly dragged about 5m.downstream in the  very fast flow so bottom readings may not be accurate
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 27.0 7.4 10.00 0.20 7.34 65.1 0.32
3.9m 27.0 6.6 10.10 0.20 6.91 61.3 0.35
#12283 21 Jul 2018 Approved Notes:

AHD 0.95 @ 09:23  ( G2 was 1.36 @ 15:00 on 20-07-18)                                   G6  3.03 @ 08:47

Strong tidal influence over night

Bottom turbidity sample contained many small particles

Flats have drained downstream of G4 but not upstream where deep water cover exists across the flood plain
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 17.0 7.4 8.60 0.90 8.42 72.5 1.79
3.3m 17.0 7.1 8.40 1.80 7.43 64.2 3.12
#12255 14 Jul 2018 Approved Notes:

AHD G6  2.86 @  09:22

AHD G2   rising from 0.88 to 0.96 within a period of 48 secs  @ 11:45

Wind driven waves travelling downstream to G2

Turbidity/ pH not taken

Water has drained from flats downstream of G4 but Rivernook flats & upstream have extensive deep water cover. Water flowing strongly through dip in causeway  at G4
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 8.50 0.20 9.27 79.2 0.45
4.2m 8.30 0.20 9.07 77.3 0.45
#12193 22 Jun 2018 Approved Notes:

AHD G2 0.55   @   09:55   AHD  G6 Water over the top of the AHD board

Very deep water across flats with extremely fast flow from upstream G6 to G4  -  no water cover over flats except small area immediately downstream G4 bridge, this area was draining back into the river channel- there was no water across OOR at flood markers or any other roads or tracks. G5 & G4 not sampled because of flooding.

 
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 20.0 6.1 8.50 0.10 7.46 63.9 0.33
3.9m 20.0 8.60 0.20 7.42 63.5 0.37
#12101 31 May 2018 Pending Notes:

AHD G2   0.91  @ 11:35           0.98  @ 12:35

Freshwater inflow difficult to estimate as waves were going upstream to 1.00m, then with slight downstream movement before returning upstream

Flats upstream to & around G4 have drained but visible water remains around G5 in lower areas. Large areas od water cover occur upstream of Rowans Gully
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.8 11.40 2.80 8.50 79.2 5.22
4.3m 9.0 7.9 14.80 32.00 6.22 75.1 49.02
#12071 18 May 2018 Approved Notes:

AHD G2 rising & falling between 0.58   to   0.62  @  09:55

Flow indicated by probe movement was going both upstream & downstream. (result of  waves entering at mouth
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 2.60 8.02 76.3 4.83
3.9m 9.0 6.8 15.30 31.30 6.33 76.6 47.94
#12048 14 May 2018 Approved Notes:

AHD G2 0.83 @ 15:15

Natural opening occurred late pm. or over night on 13-05-18

Water column very dynamic.Weighted rope used because of fast flow

River bed at G2 site soft with deep very fine black silt. 

 
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 25.0 7.0 11.90 2.10 6.89 64.5 4.09
4.2m 25.0 7.4 14.50 32.10 3.33 39.7 49.19
#12016 3 May 2018 Approved Notes:

AHD 0.42

Flats down stream G4 have drained leaving white powdery deposit on previously submerged veg. Upstream around around G5 water remains in low areas

Fish being caught from fishing platform @ G2
G2_20180503_0001.pdf

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 13.50 9.30 7.39 75.0 15.80
3.9m 16.90 33.00 7.13 89.8 50.30
#11998 24 Apr 2018 Approved Notes:

AHD 0.12
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 15.60 5.60 5.32 54.9 9.80
3.5m 17.30 33.40 6.13 78.1 50.80
#11996 21 Apr 2018 Pending Notes:

AHD 0.51

Water very dark & dirty
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 14.70 2.90 3.34 33.2 5.32
3.8m 15.10 7.70 0.24 2.4 13.27
#11993 17 Apr 2018 Approved Notes:

AHD G6  1.66 @ 11:05     G2   1.66 @ 11:30
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 14.30 1.50 7.12 70.5 2.98
5.0m 17.80 32.00 0.93 11.8 48.88
#11970 13 Apr 2018 Approved Notes:

G6 AHD 1.48 @ 08:05  G2  1.53  @10:40

CCMA YEOKEL meter used. Turbidity -wide range & erratic

Wind driven waves going downstream. Water very reddish brown colour 
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 15.3 6.7 17.80 3.50 6.34 72.6 6.23
4.8m 15.3 7.2 18.20 33.30 2.81 36.6 50.79
#11952 10 Apr 2018 Approved Notes:

AHD 1.50

N wind sending large ripples downstream
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 19.00 2.40 6.31 68.8 4.39
4.8m 17.80 32.50 1.32 16.9 49.47
#11945 6 Apr 2018 Approved Notes:

AHD G2 1.47     G6 1.42  @  10:39
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.7 18.00 2.80 5.67 67.0 5.21
4.8m 9.0 7.2 17.90 32.40 1.98 25.3 49.47
#11911 23 Mar 2018 Approved Notes:

AHD G6 1.16 @ 10.55    AHD G2 1.19 @ 11:55

Wind driven ripples affecting flow observation

Very large number of small fish  6-12 cm. long around bridge & fishing platform
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 19.70 1.70 8.52 99.5 19.54
4.5m 17.50 33.20 5.19 66.1 50.50
#11894 16 Mar 2018 Approved Notes:

CCMA's YEOKEL meter used for monitoring

AHD G6 0.65 @ 08:00    0.71 @   14:46

AHD G2 0.71 @ 10:25     0.75 @   13:35

NTU's 70 @ 0.50 depth at halocline, rising at top of salt wedge then increasing with depth

Only intermittent waves overtopping berm over a high sand build up at recently opened entrance (20-03-18) . No exchange or out flow from estuary

Flats from G4 & Latrobe creek draining into river channel

 
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 12.2 6.8 18.50 0.40 5.36 58.3 2.70
4.1m 12.2 6.9 18.00 28.80 0.44 5.5 44.59
#11887 14 Mar 2018 Approved Notes:

AHD  G2 0.74  @16:05      -     G6 AHD  0.70  @ 17:10
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 21.00 1.60 4.41 49.7 3.14
4.0m 17.70 27.80 2.13 26.2 43.07
#11881 13 Mar 2018 Approved Notes:

AHD G2  0.57  @ 12:25    -   0.55  @ 13:15   -  G6 0.66  @ 12:01

Large number of small fish around poles of fishing platform G2 also along edge of low track- very active

 
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 18.20 1.30 3.49 37.5 2.49
3.9m 17.60 27.60 4.16 51.3 42.87
#11875 12 Mar 2018 Approved Notes:

AHD G2   0.37 @ 10:55  - dropped to 0.35 @ 14:55 G6  0.40 @ 15:17

Slight current going downstream, but wind driven waves from south going upstream to G2

Oily slick on surface of water in sheltered areas on west bank
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 18.10 1.80 1.79 19.1 3.40
3.5m 18.60 31.30 0.04 0.5 47.94
#11874 11 Mar 2018 Approved Notes:

Post Artificial Opening completed 15:20  on 10-03-2018

AHD    G2  1.26 @  07:30 -  1.26  @ 10:40- G6 1.33 @ 07:15

Strong S/E wind driving waves upstream to G2 . Strong out flow discharging out through a wide entrance.

Strong current movement in water column made monitoring difficult. Water colour very dark (turbidity not measured)
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 19.80 1.50 0.83 9.1 3.33
4.5m 18.30 31.80 0.03 0.3 48.55
#11873 10 Mar 2018 Approved Notes:

Pre Artificial Opening

AHD G2 1.50  @10:00    G6  1.45 @  09:05
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 20.70 1.10 5.93 66.6 2.23
5.0m 18.10 32.10 0.03 0.4 49.04
#11860 5 Mar 2018 Approved Notes:

AHD G2 1.47 @11:55   G6 1.42   @ 08:05

Deck of fishing platform completely under water

Large schools of small fish around bridge & auto monitor  intake, also in pools & water on side of OOR at flood markers
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 20.00 1.40 6.44 71.5 2.67
4.8m 18.20 31.90 0.04 0.5 48.83
#11836 28 Feb 2018 Approved Notes:

AHD 1.42 @ 08:15

27-02-2018  (late pm.) Water only over low track & low area on top track- none over OCR& camp ground. Some water at side of road on OOR at flood markers where a huge no. very small fish were observed in pool. Flats flooded D/S G4 & water in drains U/S. Water just starting to enter flats (water logging) immediately around this area.

Drilling for core samples started in preparation for new bridge over Gellibrand (G2 site) on 26th. /27th.& 28 th Feb.also at start of OCR from GOR & also W of campground boundary
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.6 20.70 1.40 6.55 73.6 2.78
4.8m 9.0 6.9 18.30 32.00 0.05 0.8 49.07
#11827 21 Feb 2018 Approved Notes:

AHD G6 1.30 @ 11:10  G2 1.33  @  11:30

Very humid conditions Air temp 24C.

Water up to base of fishing platform deck

 
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.9 21.20 1.60 7.79 88.5 3.03
4.7m 9.0 7.0 18.40 32.30 0.04 0.5 49.23
#11855 16 Feb 2018 Approved Notes:
  • This monitoring was conducted as part of the Index of Estuary Condition.
  • The CCMA YeoKal was used.  It can measure turbidity below 9 NTU.

 
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 2.8 7.3 19.00 2.80 7.89 85.9 5.21
4.7m 2.8 7.2 18.70 33.60 0.64 8.4 51.09
#11777 9 Feb 2018 Approved Notes:

Fine black particles throughout bottom turbidity sample -top sample very clear
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.0 22.50 1.50 6.26 73.0 2.82
4.5m 9.0 7.1 18.30 32.50 0.05 0.6 49.59
#11762 2 Feb 2018 Approved Notes:

AHD G2  1.11 @ 11:56     G6   1.08  @ 11
:27

Flow estimate  difficult because of wind driven waves.

Mouth still barred -more sand sea side of berm & sand very high at east end of beach. Estuary front wider but low track not yet completely covered all way. No water over any roads or other tracks.

New sample equip for pH & turbidity used. Chart used for NTU's. Water sample from 10 cm  above bottom contained small specks of black sediment & very small pieces of algae
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.2 19.80 1.90 7.99 88.5 3.52
4.5m 9.0 7.2 18.20 32.60 0.06 0.8 49.67
#11804 29 Jan 2018 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 5.7 7.1 26.60 2.60 6.25 79.0 4.92
4.3m 5.7 7.2 18.60 33.90 1.18 15.6 51.64
#11731 21 Jan 2018 Approved Notes:

AHD 0.68  @ 09:40

Recent high temperatures (18 &19 th Jan = 38C.) replaced by cool moist foggy conditions

Very large no of waterbirds on N wetlands. Dragonflies around G2 & estuary
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.2 21.30 2.40 7.97 91.4 4.50
3.9m 9.0 18.00 32.90 0.24 3.1 50.10
#11709 7 Jan 2018 Approved Notes:

AHD G2  0.62 @  09:40                                                                                      G6   0.68  @13:15

Salt wedge at 2.50m from top @  G4    D.O. levels low below 2.50m    

no salt at G5 
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.0 20.40 2.90 7.31 82.3 5.42
4.0m 9.0 18.00 33.20 1.73 22.2 50.60
#11681 27 Dec 2017 Approved Notes:

Monitoring very difficult because of large no. people diving off bridge, swimming & boating around probe area

AHD G2  0.53
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 11.0 7.0 20.40 4.90 8.10 90.4 8.82
3.6m 11.0 17.90 33.90 4.95 64.0 51.50
#11599 17 Nov 2017 Approved Notes:

AHD G2 0.33@ 09:52

Freshwater inflow between slow & pool but going both US & DS
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 13.0 19.20 1.10 6.49 70.8 2.06
3.7m 13.0 15.20 31.60 3.13 37.8 48.43
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