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M1 Stanley Street

Active Physico-Chemical 27-10-2013 - 13-04-2024

Merri River Estuary

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114 results found (Displaying 11 - 20)
ID Date Status Details
#15579 17 Jun 2023 Approved Notes:

Little Pied Cormorant, Chestnut Teal (lots), Coots (lots), Pacific gull, Moorhen, Aust. Grebe, White Faced Heron, Great Egret.

Lots of plant debris on surface of river.

 

Other Samplers; 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 10.0 6.8 10.70 1.30 7.50 68.9 3.60
2.7m 10.0 6.8 13.30 29.70 8.12 93.2 45.82
#15521 13 May 2023 Approved Notes:

Pacific ducks, Pied cormorants, White faced herons, Waterhen.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.7 13.50 1.50 5.37 52.7 2.79
2.0m 9.0 7.5 15.90 26.70 0.17 2.0 41.57
#15458 15 Apr 2023 Approved Notes:

Thanks everyone!  Results remain really interesting and fantastic photopoints capturing the current mouth condition.  Interestingly, there's been enough flow to keep the mouth open, but not enough to completely flush the lower depths which still contain some older salty water.  It will be very interesting to see if tomorrow's results have improved the lower depths given we've had a fantastic month of autumn rainfall which has resulted in the first sign of freshwater inflows into our estuaries.  Regards Jarred.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.3 16.60 3.90 7.77 80.4 7.04
2.0m 9.0 7.3 17.40 27.90 2.15 26.1 43.26
#15343 11 Mar 2023 Approved Notes:

Pacific black duck, Chestnut teal, Moorhens with chicks.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.7 17.90 2.40 6.40 68.5 4.38
2.0m 9.0 6.6 18.10 30.40 0.18 2.3 46.76
#15278 11 Feb 2023 Approved Notes:

We returned to Edwards Bridge for this session.

Pacific black duck, Chestnut teal.

 

Jarred - thanks everyone for your monitoring.  Results are very interesting, particularly the low D.O, but I believe your values are true and have picked up on an algal bloom.  This is quite common in this part of the estuary, and i've since seen some very high and very low readings over each diurnal (daily) cycle as the algal produces oxygen during sunlight, and then consumes it during darkness!  
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.8 20.30 5.10 3.65 42.0 9.01
1.9m 9.0 7.0 18.70 33.90 3.85 56.0 51.50
#15221 14 Jan 2023 Approved Notes:

As noted above D.O. failed to calibrate.

 

White faced Heron, Moorhens

 

J.Obst - sorry to hear about the meter; i'll look into this for you.  Other readings show a very distinct salt-wedge which reflects the recent dry weather and summer flow reduction.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.1 21.60 2.60 4.79
1.4m 9.0 7.4 19.30 30.60 47.07
#15165 10 Dec 2022 Approved Notes:

Dusky Moorhen, Swallows, Mudlarks, Raven.

 

Jarred - Great readings with an extremely distince saltwedge present - the season is changing!!  
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 15.0 7.9 17.80 1.00 4.51 45.0 2.20
1.4m 15.0 7.7 16.70 25.60 5.55 63.8 39.97
#15069 8 Oct 2022 Approved Notes:

Thanks Gary & Rachel.  Very well mixed freshwater dominated profile at present.  Interestingly, D.O.s are slightly on the low side, but this is something we've seen during previous years in Sept/Oct.  Cheers Jarred.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 12.0 7.0 14.40 1.20 4.65 45.0 2.34
1.5m 12.0 7.5 14.30 1.20 4.39 43.7 2.40
#15008 10 Sep 2022 Approved Notes:

Lots of ozola mat floating around pontoon.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 6.3 13.10 1.00 5.85 55.5 2.01
2.0m 9.0 6.9 13.00 1.00 5.51 52.7 2.01
#14938 13 Aug 2022 Approved Notes:

Spoonbill, Chestnut teal, Pacific black duck.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.5 11.30 1.80 7.31 66.8 3.43
1.9m 9.0 7.1 13.40 31.50 9.85 113.2 48.36
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