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MC1 Merriman Creek - fishing platform

Active Physico-Chemical 28-08-2020 - 27-03-2024

Merriman Creek

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59 results found (Displaying 1 - 50)
ID Date Status Details
#16101 27 Mar 2024 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 4.7 17.60 6.30 8.78 94.4 11.04
2.4m 4.7 21.40 15.30 4.48 54.8 25.05
#15967 15 Jan 2024 Approved Notes:

The estuary was flushed out with fresh water after maximum flows of 2900ML/day reached the estuary over the weekend.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 53.3 21.70 0.20 7.39 83.2 0.34
1.5m 53.3 21.60 0.20 6.88 77.3 0.36
#15966 10 Jan 2024 Approved Notes:

pH needs to be recalibrated
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 42.5 20.30 0.20 6.75 74.9 0.43
1.9m 42.5 19.40 17.10 4.20 50.5 27.70
#15899 5 Dec 2023 Approved Notes:

Maximum flows of around 5000 ML/day have completely flushed the estuary out of brackish to saline water.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 71.5 6.8 20.70 0.20 6.30 70.4 0.32
1.5m 71.5 6.9 20.70 0.20 6.36 71.0 0.32
#15877 20 Nov 2023 Approved Notes:

Low DO could be due to decaying sea grass and/or disturbance of sediment?
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 7.9 8.3 20.00 3.90 4.69 52.4 7.14
1.4m 7.9 8.2 20.40 19.70 1.66 20.5 31.53
#15798 11 Oct 2023 Approved Notes:

Flows of up to 524 ML/d reached the estuary after heavy rains the week prior which flushed out the estuary of saline water.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 43.4 6.6 12.40 0.30 7.31 68.0 0.59
1.3m 43.4 6.6 12.40 0.30 7.12 66.3 0.64
#15797 13 Sep 2023 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 5.0 7.5 15.10 17.10 7.46 81.4 27.71
1.5m 5.0 7.4 14.20 29.80 0.86 10.0 45.91
#15690 27 Aug 2023 Approved Notes:

Quite a bit of algae in the water which may explain the elevated DO levels

Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 4.2 7.4 8.00 3.50 11.72 112.8 6.41
1.5m 4.2 8.3 12.50 34.40 10.57 121.2 52.26
#15604 27 Jun 2023 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 2.8 7.8 9.40 9.10 12.50 115.2 15.59
2.0m 2.8 8.6 12.20 35.20 8.45 97.8 53.38
#15576 14 Jun 2023 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 20.4 7.5 11.20 15.80 11.28 114.0 25.76
1.5m 20.4 8.6 12.70 35.40 9.02 106.4 53.61
#15553 1 Jun 2023 Approved Notes:

Swells introducing lots of ocean water into the estuary
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 1.1 8.3 13.40 36.60 9.57 114.7 55.19
1.7m 1.1 8.4 13.50 37.20 9.13 109.9 55.99
#15486 20 Apr 2023 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 28.3 7.9 14.00 8.20 10.20 103.1 14.05
2.5m 28.3 7.8 18.90 35.90 1.61 21.1 54.13
#15440 11 Apr 2023 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 11.8 7.6 13.70 3.90 10.23 101.7 6.98
3.0m 11.8 8.2 15.50 22.50 5.49 65.2 35.55
#15439 5 Apr 2023 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 6.1 8.0 17.80 4.00 8.68 93.5 7.18
2.7m 6.1 7.1 21.30 26.90 1.56 20.8 41.78
#15349 15 Mar 2023 Approved Notes:

Oxygenated layer approximately 1.6-1.7m 
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 2.7 8.0 20.80 9.90 9.15 110.4 16.79
2.5m 2.7 7.5 21.70 20.90 0.10 1.3 33.31
#15328 7 Mar 2023 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 1.2 8.2 20.20 12.80 8.10 97.3 21.23
2.5m 1.2 7.3 24.30 24.00 0.33 4.6 37.78
#15320 2 Mar 2023 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 2.2 7.9 19.20 11.70 7.45 86.4 19.52
2.5m 2.2 7.2 23.90 26.40 0.11 1.5 41.24
#15302 16 Feb 2023 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 4.3 8.1 25.50 11.90 8.78 114.4 19.94
2.3m 4.3 8.2 21.20 30.90 4.83 65.0 47.38
#15275 8 Feb 2023 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 1.8 8.1 23.40 16.50 7.98 102.5 26.93
2.4m 1.8 8.3 21.70 30.90 6.11 82.5 47.32
#15274 19 Jan 2023 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 5.7 7.9 19.50 9.10 8.70 99.7 15.48
2.5m 5.7 7.4 23.40 27.80 0.67 9.2 43.08
#15234 11 Jan 2023 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.7 8.1 22.70 5.30 9.73 116.3 9.34
1.5m 9.7 7.4 22.40 30.90 1.78 24.7 47.46
#15218 5 Jan 2023 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 24.4 7.8 23.00 4.50 11.87 141.7 8.04
1.9m 24.4 8.2 19.80 34.90 7.84 107.9 52.76
#15193 20 Dec 2022 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 15.4 7.4 18.80 0.40 9.14 97.4 0.86
1.7m 15.4 7.7 17.60 30.60 2.37 30.5 46.93
#15192 14 Dec 2022 Approved Notes:

DO meter giving very high readings so not included.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 15.9 8.1 14.90 19.50 31.20
1.7m 15.9 8.1 15.70 33.20 50.55
#15128 16 Nov 2022 Approved Notes:

DO meter not working so no DO measurements this time. Halocline at around 1.1m depth.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 17.8 6.8 15.70 0.30 0.60
1.5m 17.8 7.8 15.30 29.30 45.27
#15099 6 Oct 2022 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 17.6 7.5 13.40 6.90 10.49 104.6 12.13
1.5m 17.6 8.0 13.80 30.80 8.38 101.1 47.30
#15063 21 Sep 2022 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 13.7 7.7 14.20 2.10 8.53 84.0 3.93
2.0m 13.7 8.2 13.70 33.30 7.47 88.4 50.84
#15001 8 Sep 2022 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 18.9 6.9 12.10 3.20 10.65 100.9 5.75
1.7m 18.9 8.1 12.70 31.50 8.31 95.1 48.27
#14989 25 Aug 2022 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 31.4 6.9 11.10 0.40 9.57 87.1 0.88
2.1m 31.4 8.0 11.20 30.60 6.17 68.0 47.09
#14969 18 Aug 2022 Approved Notes:

After peak flows of >2000ML/day recorded at Seaspray Pump Station overnight, the estuary was flushed out with freshwater. Water is very turbid.
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 152.0 6.4 11.20 0.20 9.23 84.1 0.32
1.8m 152.0 6.7 11.20 0.20 9.13 83.2 0.34
#14927 10 Aug 2022 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 11.3 7.0 8.10 1.80 12.55 107.2 3.39
2.0m 11.3 8.1 11.60 34.20 8.36 95.1 51.99
#14899 20 Jul 2022 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 10.6 7.1 7.00 2.90 10.32 86.4 5.27
1.8m 10.6 8.0 10.90 33.70 6.56 73.2 51.34
#14881 12 Jul 2022 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 13.3 7.1 8.50 6.50 10.76 95.8 11.48
1.8m 13.3 8.2 10.80 34.10 8.47 94.5 51.82
#14880 7 Jul 2022 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 13.0 7.0 7.30 0.70 10.25 95.6 1.28
1.9m 13.0 8.0 11.90 33.10 8.57 97.5 50.48
#14751 15 Jun 2022 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 33.7 7.5 9.20 1.00 7.71 67.3 1.87
1.8m 33.7 8.1 10.00 23.40 6.02 61.8 37.05
#14685 19 May 2022 Approved Notes:

Horiba Meter used
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 3.5 13.00 3.60 9.13 88.6 6.56
2.0m 3.5 17.00 30.20 2.38 29.6 46.80
#14684 19 May 2022 Approved Notes:

Horiba meter used
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 3.1 12.80 3.10 9.24 89.0 5.83
2.0m 3.1 17.10 30.40 1.66 20.7 47.10
#14683 19 May 2022 Approved Notes:

Horiba Meter used
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 2.6 11.90 3.40 9.91 93.6 6.23
2.8m 2.6 17.20 30.30 0.67 8.4 47.00
#14651 3 May 2022 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 4.8 7.0 14.90 3.40 6.73 67.9 6.15
2.5m 4.8 7.2 17.90 28.30 2.15 26.9 43.91
#14647 21 Apr 2022 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 11.8 7.4 15.00 4.40 6.98 71.0 7.90
2.6m 11.8 7.3 18.20 31.80 1.99 25.6 48.69
#14596 13 Apr 2022 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 8.0 7.6 15.40 1.50 6.61 66.7 2.81
1.8m 8.0 7.4 17.60 33.70 3.75 48.1 51.38
#14566 30 Mar 2022 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 7.0 7.1 18.60 6.20 7.33 81.3 11.02
3.0m 7.0 7.1 22.90 31.50 1.90 26.6 48.26
#14542 16 Mar 2022 Approved Notes:

Water still flowing out after being opened
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 5.7 6.7 22.90 10.00 8.31 102.5 17.00
1.6m 5.7 7.1 21.90 29.70 4.56 61.8 45.85
#14524 24 Feb 2022 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 4.2 7.2 23.70 17.60 7.32 95.1 27.05
2.5m 4.2 6.9 24.30 38.70 1.59 23.9 59.59
#14500 16 Feb 2022 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 4.0 7.5 26.70 24.00 9.17 131.2 37.85
2.3m 4.0 7.3 21.70 35.40 2.77 38.7 53.62
#14474 2 Feb 2022 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 20.2 7.7 19.60 36.30 8.80 118.9 54.84
1.7m 20.2 7.9 19.70 37.00 8.89 121.1 55.83
#14439 5 Jan 2022 Approved Notes:

Big swell introducing a large amount of ocean water into the estuary 
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 30.0 7.6 20.20 6.16 88.8
2.1m 30.0 7.8 20.20 5.62 81.2
#14355 16 Nov 2021 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 22.9 7.0 15.30 0.90 7.88 76.8 1.80
1.2m 22.9 7.3 14.00 33.20 4.93 58.3 50.81
#14354 10 Nov 2021 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 5.5 7.3 17.30 3.30 5.51 59.4 10.52
2.0m 5.5 7.4 16.90 33.00 3.31 41.7 51.48
#14117 6 May 2021 Approved Notes:

Illegally opened the night before - eye witness report of the estuary being opened by 5 men with shovels. Video on facebook posted around 5pm showing the water flowing out


Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 9.1 6.6 17.60 10.90 9.23 103.1 18.05
0.5m 9.1 7.3 16.60 36.20 7.28 93.2 54.68
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