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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 - 25)
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
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