Observation details

Overview

Estuary Merri River Estuary
Site Stanley Street
Observation ID #12728
Date and Time Saturday 2nd March 2019 09:15am
Approved Approved

Notes

YSI conductivity probe calibration check was successful prior to sampling, however during sampling, salinity and conductivity were reading 0.0 ppm. Corrective action was to calibrate conductivity, the meter worked fine after that.

The YSI reported "UNDR" under range at the base depth of 1.4m. The DO calibration check was successful prior to sampling. DO readings at all other depths at this location and at the following location were fine.

Recommend factory calibration of the YSI.

Depth Profiling

Depth m Temperature °C Salinity ppt D.O. mg/L D.O. % sat EC mS/cm Notes
0.1m 22.60 8.50 6.99 86.0 15.87
Previous 17.8 29.5 7.3 92.5 45.4
Median 16.0 4.00 9.24 92.50 7.9
0.5m 23.90 27.70 8.30 114.1 43.05
Previous 21.4 13.1 10.8 131.2 20.4
Median 15.5 3.90 9.24 90.30 7.1
1.0m 24.40 31.30 5.05 73.5 47.99
Previous 18.2 29.4 6.3 88.5 45.5
Median 15.6 29.40 6.17 65.30 45.3
1.4m 23.50 32.20 0.00 0.0 49.19 YSI reported "UNDR" under range at base depth of 1.4m
Previous 19.0 32.6 4.1 52.2 49.7
Median 14.2 29.20 5.96 65.00 33.2

Top-Bottom Sampling

Depth m Turbidity NTU pH
Top 0.1 15 8.7
Previous 0.1 9 7.5
Median 0.1 9 7.4
Bottom 1.4 27 7.7
Previous 1.6 9 7.7
Median 1.6 9 7.6

Other details

Max depth 1.50
Previous 1.70
Median 1.70
Flow estimate N/A

Observation Documents

Link Date File name Description

Preceding Observations

C Estuary is closed to the sea. O Estuary is open to the sea. P Perched
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