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MC1 Merriman Creek - fishing platform

Active Physico-Chemical 28-08-2020 - 22-10-2024

Merriman Creek

67 results found (Displaying 1 - 25)
Date Status Details
22 Oct 2024 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 5.0 6.9 21.20 6.50 8.03 94.1 11.35
1.4m 5.0 7.9 19.20 32.50 4.68 61.5 49.52
3 Oct 2024 Approved Notes:

Very low water levels. Seagrass exposed
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 8.0 7.7 19.40 2.90 7.73 84.6 5.31
1.3m 8.0 8.2 16.70 30.40 5.34 65.3 46.63
3 Sep 2024 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 1.5 7.6 11.40 12.90 9.53 93.3 21.42
2.7m 1.5 7.9 11.90 24.50 4.56 48.5 38.55
29 Aug 2024 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 5.2 7.9 11.20 17.20 9.43 96.0 27.87
2.5m 5.2 8.0 13.00 33.40 4.35 51.0 50.91
13 Aug 2024 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 7.5 7.5 9.00 1.90 10.19 88.3 3.64
1.5m 7.5 8.0 12.60 32.20 3.04 34.6 49.29
19 Jul 2024 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 30.5 7.8 12.50 9.60 11.64 116.2 16.40
0.4m 30.5 7.4 10.70 21.80 10.64 111.0 34.70
17 Jul 2024 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 8.4 7.6 9.30 2.50 10.71 94.9 4.80
2.7m 8.4 7.8 12.70 27.20 1.50 16.8 42.90
2 May 2024 Approved
Depth Turb NTU pH Temp ° C Salin ppt D.O. mg/L D.O. % sat EC mS/cm
0.1m 4.3 7.9 11.80 3.60 10.42 96.5 6.45
2.3m 4.3 7.8 18.10 30.40 1.78 22.2 46.69
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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