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M2 Fonterra Floating Pontoon

Active Physico-Chemical 17-11-2013 - 13-04-2024

Merri River Estuary

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114 results found (Displaying 1 - 25)
ID Date Status Details
#16111 13 Apr 2024 Pending
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 15.0 7.8 16.70 1.40 6.48 67.5 2.66
1.5m 15.0 8.0 16.70 1.40 5.70 59.5 2.67
#16107 16 Mar 2024 Pending Notes:

Birds present at site

Pacific black duck

Little pied cormarant

Dusky moorhen

Chestnut Teal

Coots
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 15.0 8.1 20.20 1.40 5.50 60.7 2.66
1.7m 15.0 8.1 20.00 1.40 4.32 47.1 2.66
#16009 10 Feb 2024 Approved Notes:

There were two men fishing off the pontoon using rope with big hooks, dragging lots of items from the bottom of the river bed.  

Thanks for the report; very strange, and nothing that i've seen before.  I have seen people searching for old bottles, but not scrap metal.  
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 20.0 8.2 22.00 1.20 6.85 78.5 2.35
1.5m 20.0 8.2 21.90 1.20 5.73 67.0 2.35
#15957 13 Jan 2024 Approved Notes:

purple swamphen, hooded lapwing, pacific black duck, little grobe
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 16.0 8.5 23.10 1.00 9.01 105.6 1.91
1.5m 16.0 8.4 23.20 1.00 8.67 101.9 1.91
#15912 9 Dec 2023 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 22.0 8.1 21.90 1.20 9.87 114.3 2.25
1.5m 22.0 8.1 21.90 1.20 10.12 113.3 2.36
#15836 11 Nov 2023 Approved Notes:

Possible dissolved oxygen issue with YSI meter.  Please check

Thanks guys - D.O. readings are high, but quite likely correct due to algae presence producing excess oxygen.  This is quite typical at this time of year due to extended sunlight and warming summer conditons.  Thanks for noticing the high level though - Jarred.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 12.5 8.3 20.50 1.30 14.44 155.6 2.44
1.5m 12.5 8.2 20.20 1.30 13.98 151.8 2.45
#15795 14 Oct 2023 Approved Notes:

Pacific black ducks, Cormorants (black faced), Large black cormorants (black faced),

Purple swamp hens, Swallows.

 
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 12.0 8.4 16.40 1.40 14.71 150.1 2.76
1.5m 12.0 8.5 16.30 1.40 13.68 141.2 2.72
#15758 9 Sep 2023 Approved Notes:

ph meter failed to calibrate

 

Great results, highly oxygenated and looking good!  Thanks Jarred.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 17.0 11.70 1.30 12.09 113.0 2.57
1.8m 17.0 11.60 1.30 12.00 109.1 2.57
#15696 12 Aug 2023 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 16.0 7.5 12.00 1.10 8.66 81.5 2.20
1.7m 16.0 7.7 11.90 1.10 7.73 72.2 2.23
#15659 15 Jul 2023 Approved Notes:

Pacific black duck, Chestnut teal, Purple swamphens, Moorhen-dusky.

 

Eleanor Cowell and James Cowell samplers.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 18.0 7.6 11.10 0.70 8.42 76.2 1.38
2.4m 18.0 7.6 11.00 0.70 8.35 74.3 1.43
#15581 17 Jun 2023 Approved Notes:

Great Egret, Little Pied Cormorant, Pacific Black Duck, Purple Swamp hens, Moorhens, Chestnut teal.

 

Unable to include other samplers as their names seem to have been deleted from list.

Eleanor Cowell, James Cowell and Jarred Obst
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 13.0 7.9 11.30 1.30 8.70 80.5 2.56
2.0m 13.0 7.8 11.30 1.30 7.60 71.3 2.47
#15522 13 May 2023 Approved Notes:

Egret, Coots, Little pied cormorants.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.8 13.40 1.30 7.26 69.0 2.48
1.7m 9.0 7.8 13.20 1.30 6.27 59.5 2.48
#15459 15 Apr 2023 Approved Notes:

Great results - all very fresh and highly oxygenated which is great to see!
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 18.0 8.0 16.60 1.20 11.86 123.0 2.41
1.5m 18.0 8.2 16.60 1.20 11.53 118.9 2.41
#15344 11 Mar 2023 Approved Notes:

Moorhens, Swallows, Magpie larks, Dusty coots, Little black cormorants.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 8.3 18.30 1.20 14.30 155.1 2.26
1.6m 8.1 18.00 1.20 11.05 118.4 2.27
#15279 11 Feb 2023 Approved Notes:

Pacific black duck, Purple swamp hen, Magpie lark.

 

Jarred - great results as well.  Looks like a freshwater bloom happening up at Fonterra as well, with D.O.s very high!!
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 8.4 22.40 1.00 15.43 178.5 2.00
1.5m 10.0 8.5 22.40 1.00 12.60 138.6 2.00
#15222 14 Jan 2023 Approved Notes:

Pacific black ducks

 

D.O. data not recorded calibration failed
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 14.0 8.6 24.70 1.10 2.14
1.0m 14.0 8.7 24.30 1.10 2.14
#15166 10 Dec 2022 Approved Notes:

Dusky Moorhen, Reed Warblers, Pacific Black Ducks.

 

Jarred - thanks everyone.  Interesting to see the DO's in the upper water levels are on the rise - most likely being driven by warmer surface water driving algae growth, typical of the summer season.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 30.0 8.2 19.80 0.80 11.36 126.0 1.57
1.5m 30.0 7.9 18.90 0.80 8.15 89.0 1.54
#15070 8 Oct 2022 Approved Notes:

Thanks again Gary & Rachel.  Very fresh and turbid profile!  

As flagged Gary, we're currently looking at artificial opening at the Cutting so this information, particularly a consistent D.O. profile at or above 5mg/L, is really important to support such decision.  

Regards Jarred. 
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 17.0 7.7 15.60 0.20 5.30 53.5 1.34
2.0m 17.0 7.7 14.90 0.70 4.88 49.4 1.33
#15009 10 Sep 2022 Approved Notes:

Water level high.  Stairs were cut off.  Had to enter pontoon on ramp.

Water was brown and murky.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 12.5 7.1 13.90 0.70 6.65 65.0 1.32
2.0m 12.5 7.3 12.90 0.70 5.66 54.2 1.34
#14939 13 Aug 2022 Approved Notes:

Pacific black ducks, Dusky moorhens, Swallows.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 8.1 11.30 1.60 8.48 79.3 3.00
1.5m 10.0 8.1 11.10 1.60 7.69 69.9 2.98
#14875 9 Jul 2022 Approved Notes:

Egret, Pacific black duck (2)

Great readings everyone - very consistent and dominated by winter freshwater following recent wet weather.  Thanks Jarred.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.6 10.70 1.80 9.75 89.1 3.42
1.5m 9.0 7.7 10.70 1.80 8.91 81.5 3.42
#14738 11 Jun 2022 Approved Notes:

Australian grebes, Moorhens, Little pied cormorant, White ibis.

 

Great data also.  Like the lower estuary site, June rainfall has increased streamflow and created a highly oxygenated freshwater profile.  Temps are dropping too!!  Great work, thanks.  Jarred O.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.7 10.50 1.30 11.01 99.1 2.49
1.7m 9.0 7.8 10.40 1.30 9.32 83.3 2.53
#14666 14 May 2022 Approved Notes:

Dusky moorhen, Pacific black duck, Chestnut teal, Little pied cormorant., 

 

Hi everyone, great data set once again & looks like some late season algal blooms have been persisting - shown by the high DO readings.  Typical of the Merri however, as Nitrate and Phosphurus levels are generally elevated in the catchment.  Thanks.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 19.0 8.3 14.80 1.30 14.78 146.4 2.59
1.5m 19.0 8.3 14.70 1.30 14.79 145.0 2.59
#14590 9 Apr 2022 Approved Notes:

Little pied cormorant, Moorhen, Pacific black duck.

 

Thanks again guys, really good results.  Some interesting D.O. readings (high), but quite expected due to on-going dry and warm weather.  Basically indicates some additional oxygen producing activity occurring, which most likely is algal growth/bloom.  Thanks Jarred.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 13.0 8.6 18.70 1.30 16.20 174.0 2.50
1.5m 13.0 8.6 18.30 1.30 13.50 140.3 2.51
#14577 27 Mar 2022 Approved Notes:

This observation carried out by Karen Wales and students from SWTAFE.

DO % sat not recorded.

Phosphorus 0.1
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 8.2 20.20 1.20 11.08 2.41
1.5m 10.0 8.2 19.70 1.20 9.56 2.40
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