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H1 Site one (Hopkins River Bridge)

Active Physico-Chemical 01-01-2000 - 20-04-2024

Hopkins River Estuary

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161 results found (Displaying 1 - 50)
ID Date Status Details
#16120 20 Apr 2024 Pending Notes:

Also on the team Fiona Spruzen and Emily Horwill for this sampling trip

pH meter couldn't be calibrated so we used pH test strips
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.5 16.20 13.80 9.38 102.1 22.78
3.5m 9.0 7.5 16.30 17.30 5.87 65.1 28.04
#16054 15 Mar 2024 Approved Notes:

Assisted by Harriet

Very old pH strips used for pH samples, as pH metre sensor failed 

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.0 21.00 20.10 6.97 86.5 32.16
4.0m 9.0 8.0 19.70 21.40 1.17 10.6 34.10
#16016 16 Feb 2024 Approved Notes:

Assisted by Fiona, and Emily, Harriette and Teddy.

 

Thanks everyone.  Interesting to see some anoxic water down deep, but quite likely this time of year and given how dry it has been.  

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.0 21.50 17.90 9.49 106.8 28.95
3.8m 9.0 6.9 18.90 33.00 0.22 2.8 50.20
#15983 19 Jan 2024 Approved Notes:

Sampling assisted by Kate's daughter Reese and niece Eve
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.3 20.90 20.90 8.31 104.5 33.36
3.5m 9.0 7.8 17.20 32.10 7.78 97.4 49.06
#15917 15 Dec 2023 Approved
img20231217_15280748.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 11.5 7.9 21.40 20.90 7.63 97.7 33.27
4.0m 11.5 7.6 18.40 28.20 0.31 3.8 43.59
#15873 17 Nov 2023 Approved Notes:

Assisted by Fiona, Emily and Harriette
img20231119_16473274.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.5 19.90 15.10 8.92 106.2 24.82
3.5m 9.0 7.9 16.90 33.60 7.50 93.3 51.30
#15813 20 Oct 2023 Approved Notes:

tide "pouring out" at mouth

 

Great observation & data; very strong salt-wedge and some potential algal activity in the upper water column already!!  Thanks Jarred.
img20231022_12213644.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 13.0 8.3 23.00 9.30 12.43 153.7 15.94
3.5m 13.0 7.8 16.00 31.80 8.37 103.1 48.60
#15751 16 Sep 2023 Approved Notes:

assisted by Fiona, Emily and Harriette

 

Results look great - getting a bit saltier with reduced rainfall and streamflow by the looks!  Fantastic effort Fiona, Emily & Harriette - great that you came along & hopefully we'll see you back next month!  Thanks Jarred
img20230917_09251054.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.3 16.90 17.50 10.98 124.5 28.40
3.5m 9.0 8.3 14.90 32.20 9.05 108.7 49.24
#15712 20 Aug 2023 Approved Notes:

DO could not calibrate today, sites H1,2,3,4.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 18.0 8.4 14.10 4.00 11.86 116.8 9.21
4.2m 18.0 7.8 13.60 33.00 7.54 88.2 50.40
#15710 14 Jul 2023 Approved Notes:

h

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 26.0 7.9 11.20 1.90 10.70 99.1 3.60
3.8m 26.0 6.9 13.10 28.70 4.90 53.5 44.32
#15582 17 Jun 2023 Approved Notes:

Distinct top outward flowing layer, and inward flowing bottom layer, with changeover at approx 2 metres depth.

 

strong NE wind
img20230617_15422773.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 12.5 7.6 11.50 6.30 9.48 91.2
4.3m 12.5 7.6 13.90 32.90 5.81 69.6 50.10
#15543 20 May 2023 Approved
img20230520_16524661.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.0 14.90 27.20 8.05 94.8 43.10
3.5m 9.0 7.9 15.40 37.70 7.84 98.5 56.70
#15461 15 Apr 2023 Approved Notes:

Van Dorn sampler forgotten so pH and turbidity levels not available

- No worries, easy done!  Based on the EC readings it looks like we've got a WQ profile almost entirely of seawater anyway!!  Thanks Jarred.
img20230415_15450534.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 17.10 30.60 7.60 96.4 46.77
3.5m 17.00 37.10 5.79 76.1 55.80
#15352 17 Mar 2023 Approved Notes:

Assisted by Sandro
img20230318_15120838.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.8 20.40 36.80 7.10 97.2 55.40
3.2m 9.0 8.0 18.30 38.00 6.23 82.4 57.00
#15298 17 Feb 2023 Approved Notes:

Assisted by Steve Selman.

 

Great results everyone - amazing salty after an exceptional 8m swell earlier in the month!
img20230220_10055218.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.0 21.00 32.20 7.16 96.4 49.10
3.0m 9.0 8.0 20.20 33.50 5.54 74.2 51.00
#15250 20 Jan 2023 Approved
img20230121_17465508.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 13.0 8.3 20.10 18.60 9.11 112.0 30.04
3.2m 13.0 8.2 17.00 33.40 7.36 92.2 50.80
#15173 14 Dec 2022 Approved Notes:

Jarred - thanks everyone, great results which indicate a changing season!!  Great to see the return of the salt wedge, and although still very seasonally high the turbidity readings are on the way down!
img20221215_11490568.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 35.0 7.8 17.70 2.50 9.29 98.5 4.61
3.5m 35.0 7.8 15.90 32.50 7.03 86.1 49.80
#15141 18 Nov 2022 Approved Notes:

Probe and Van Doorn horizontal in water because of rapid flow, so lower depths not tested or sampled.

 

Thanks Brad & Dina, and yes no worries regarding the flow and challenges sampling at depth.  Very well mixed profile so this alleviates any issues.  Very high turbidity remains!  Thanks Jarred.
img20221119_17532899.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 57.0 7.6 17.30 0.60 9.34 98.2 1.21
3.0m 57.0 17.20 0.60 9.35 98.2 1.21
#15072 14 Oct 2022 Approved Notes:

River flowing very quickly; all samples taken with ropes at significant angulation due to flow.

High level floods upstream

High tide 20.00

 

Great work everyone & appreciate you making the correct call to not sampling H2 due to flooding risks.  Perfect timing regarding the flood peak on the Hopkins estuary (3am the following morning at 1.82m AHD), with a highly turbid, fresh and well mixed profile.  Amazing mouth scouring/widening too!!
img20221015_12253361.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 65.0 8.5 14.70 0.80 8.86 87.6 1.60
5.0m 65.0 8.5 14.80 1.90 8.37 83.7 3.14
#15018 17 Sep 2022 Approved Notes:

Bottom pH is <9. Med- Fast flowing out to sea.

Mouth photos attached here. 

 

Thanks Brad.  Very interesting to see quite a lot of tidal/ocean influence still pushing up the estuary, however this may disappear soon!  Great D.O. profile throughout.




Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 8.3 12.80 8.50 8.70 87.3 15.00
3.5m 10.0 8.6 13.30 32.30 3.40 20.0 49.46
#14962 20 Aug 2022 Approved Notes:

Assisted by Grant and Jarrod

 

Great results everyone; strong salt wedge down low as expected and highly oxygenated and turbid freshwater in the top water column.  J.Obst.
img20220821_15075491.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 13.0 8.6 12.10 2.00 10.58 98.6 3.65
3.5m 13.0 8.0 13.20 31.70 3.00 34.3 48.63
#14887 16 Jul 2022 Approved
img20220716_16570787.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.4 11.10 9.50 10.87 105.5 16.16
3.5m 9.0 8.4 13.40 32.00 7.36 85.9 49.01
#14753 18 Jun 2022 Approved Notes:

Assisted by Matisse

 

Great data everyone.  Distinct salt wedge due to recent swells/tides and only moderate flow to date. Excellent DO throughout which is great.  J.Obst.
img20220620_12592729.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 8.4 12.10 3.10 11.21 104.9 5.62
3.5m 10.0 7.9 13.70 29.90 7.19 82.4 46.04
#14704 21 May 2022 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.8 13.40 6.90 10.53 103.4 12.09
3.3m 9.0 7.9 15.30 30.50 5.52 65.0 46.95
#14667 23 Apr 2022 Approved Notes:

Great data set as well, showing highly oxygenated profile and distinct halocline present.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 8.3 15.90 8.20 9.67 101.0 14.12
3.5m 10.0 7.8 16.10 29.10 6.05 72.0 44.91
#14547 18 Mar 2022 Approved Notes:

Artificial opening of mouth 10 days ago but mouth now closed

Choppy wind from the South
img20220320_15533372.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.8 22.30 12.90 7.43 90.4 21.60
3.5m 9.0 7.6 20.70 16.50 3.36 40.1 27.04
#14507 18 Feb 2022 Approved Notes:

J.Obst - great work on the sampling guys!  Water quality looks good, particularly D.O., which shows a highly oxygenated system.  As you would have noticed, the mouth remains closed and we (CMA) are currently considering the need for an Artificial Opening.  This data contributes to the decision process, so it's very important!  Thanks Jarred
img20220221_14201876.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 14.0 7.9 21.80 17.10 6.95 86.8 27.77
4.3m 14.0 7.7 20.40 21.60 3.73 46.2 34.32
#14456 21 Jan 2022 Approved
img20220122_12152294.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 11.8 8.1 24.30 21.10 8.11 108.5 33.66
3.8m 11.8 8.0 19.20 31.30 3.61 46.7 47.86
#14392 10 Dec 2021 Approved Notes:

Assisted by Miles
img20211211_11273535.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 11.5 8.2 18.40 12.30 9.68 110.4 18.91
3.3m 11.5 8.1 16.60 33.70 6.91 86.5 51.20
#14374 19 Nov 2021 Approved Notes:

Assisted by visitor Lynn.

Excellent results which have picked up potential bloom conditions in the upper water column, expressed in high DO levels. - J.Obst.
img20211124_10462559.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 26.5 8.4 19.40 9.30 11.55 133.4 15.77
3.0m 26.5 8.2 15.10 34.20 7.35 89.5 51.90
#14318 16 Oct 2021 Approved
img20211016_15010251.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 11.3 7.8 14.00 9.50 9.81 101.2 16.22
3.7m 11.3 7.6 14.80 31.50 5.15 61.7 48.23
#14284 18 Sep 2021 Approved Notes:

Very windy
img20210918_16382015.pdf
img20210918_16494460.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 24.0 7.9 13.90 28.30 8.94 103.0 43.78
3.5m 24.0 8.2 13.60 33.90 8.57 101.6 51.60
#14194 10 Jul 2021 Approved
img20210711_10441632.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 18.0 7.6 9.40 2.10 10.03 87.8 3.95
3.5m 18.0 8.2 13.60 31.70 8.60 99.8 48.60
#14178 19 Jun 2021 Approved
img20210619_16464077.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 13.0 8.2 12.40 1.90 9.68 90.4 3.52
3.5m 13.0 8.0 13.70 26.80 6.19 69.2 41.84
#14141 15 May 2021 Approved Notes:

Top and bottom turbidity were less than 9 - data fields not allowing entry.

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.5 12.30 20.40 9.49 100.1 32.60
4.0m 9.0 8.4 14.00 31.00 6.94 81.0 47.67
#14062 17 Apr 2021 Approved Notes:

Assisted by Rose and Hamish
img20210417_17135354.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.4 14.80 27.10 8.36 96.8 42.14
3.3m 9.0 8.2 15.90 33.20 6.44 78.7 50.60
#14018 19 Mar 2021 Approved Notes:

pH monitor unable to be calibrated so no ph measurements available
img20210321_11344238.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 21.40 26.40 8.18 107.1 41.06
3.3m 9.0 18.40 33.60 7.38 95.2 51.10
#13987 19 Feb 2021 Approved Notes:

Very warm day, with very calm conditions
img20210221_12422017.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 9.8 24.00 26.90 6.97 98.5 41.38
3.3m 9.0 9.2 18.50 33.40 7.25 94.6 50.80
#13934 15 Jan 2021 Approved Notes:

strong outgoing current
20210116_14462376.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.5 18.50 31.80 7.80 100.9 48.70
3.5m 9.0 7.8 17.50 33.20 7.30 93.1 50.60
#13910 18 Dec 2020 Approved
20201220_12594532.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.8 19.40 30.80 7.52 97.5 47.30
3.0m 9.0 7.9 16.40 33.30 7.68 95.1 50.70
#13842 20 Nov 2020 Approved Notes:

Assisted by Lynn
20201123_12393395.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 17.0 8.3 21.20 20.00 11.99 150.8 31.96
3.3m 17.0 7.6 16.30 33.80 7.32 91.0 51.30
#13817 16 Oct 2020 Approved Notes:

Water receded significantly after 78 mm rain in 2 days one week ago

High turbidity

Mouth open and very wide
20201019_11301206.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 100.0 6.8 17.40 0.50 8.11 84.8 1.04
3.3m 100.0 7.0 17.30 0.90 8.02 84.1 1.74
#13793 19 Sep 2020 Approved Notes:

assisted by Garry C
20200920_12114866.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 19.0 7.9 16.10 3.20 8.45 87.2 5.83
3.7m 19.0 7.9 13.90 31.30 5.48 64.5 48.12
#13756 18 Jul 2020 Approved Notes:

Large waves, northerly wind
20200719_14245684.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.5 8.2 8.90 3.40 11.19 98.0 6.27
3.8m 9.5 7.4 13.60 25.00 0.25 2.9 39.09
#13727 20 Jun 2020 Approved Notes:

Mouth open
20200622_14562922.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 8.7 12.50 8.30 15.19 149.7 14.60
3.7m 9.0 8.0 13.70 27.70 0.33 2.2 42.98
#13596 21 Feb 2020 Approved Notes:

The Van Dorn was lost at the bridge, so no bottom ot top measurements could be taken at this site.

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 20.60 27.00 8.24 106.6 41.98
3.4m 17.50 32.30 2.85 36.0 50.70
#13521 17 Jan 2020 Approved Notes:

mouth open

0.7 @high tide

strong SE wind influencing flow, blowing water into estuary a fair way
img20200120_09505835.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.0 8.2 19.20 28.10 9.57 122.5 43.44
3.2m 10.0 7.7 16.70 33.30 6.03 75.3 50.60
#13464 20 Dec 2019 Approved Notes:

Temperature in W'bool = 44 degrees today
img20191221_16543633.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 22.0 8.2 25.40 21.80 8.94 124.5 34.75
3.2m 22.0 8.1 18.20 32.30 5.14 66.0 49.35
#13409 15 Nov 2019 Approved
img20191118_16154499.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.0 7.7 16.20 27.60 7.56 91.1 42.88
3.2m 9.0 7.2 14.80 32.70 6.62 79.4 49.91
#13357 11 Oct 2019 Approved
img20191012_10264190.pdf
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 11.0 8.1 16.90 3.60 9.17 96.5 6.98
3.0m 11.0 7.8 14.30 32.60 7.16 85.0 49.78
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