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  5. 16-01-2026

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H1 Site one (Hopkins River Bridge)

16 January 2026

Observation details

Overview

Estuary Hopkins River Estuary
Site Site one (Hopkins River Bridge)
Observation ID #17374
Date and Time Friday 16th January 2026 18:00pm
Approved Approved

Notes

very windy 

rotten egg gas found at bottom

assisted by Gilly and Fiona

Depth Profiling

Depth m Temperature °C Salinity ppt D.O. mg/L D.O. % sat EC mS/cm Notes
0.1m 21.80 18.80 7.45 94.7 30.22
Previous 23.8 17.0 7.8 103.1 27.5
Median 17.2 11.70 9.24 100.00 19.6
0.5m 21.80 18.80 7.42 93.7 30.22
Previous 19.1 4.2 10.7 117.9 7.6
Median 17.2 11.70 9.38 100.00 19.6
1.0m 21.80 18.80 7.12 90.0 30.25
Previous 20.1 26.1 4.8 62.2 40.6
Median 16.3 21.20 8.50 96.60 33.7
1.5m 21.70 18.90 6.93 87.3 30.41
Previous 19.2 4.3 10.8 116.7 7.7
Median 16.3 21.20 8.52 96.70 33.7
2.0m 21.60 18.90 6.82 86.7 30.41
Previous 18.3 31.1 2.4 31.7 47.7
Median 16.0 27.10 7.77 89.90 42.2
2.5m 21.60 18.90 6.75 85.8 30.44
Previous 16.5 19.5 8.2 93.0 30.9
Median 16.0 27.10 7.77 89.90 42.2
3.0m 21.60 18.90 6.74 84.4 30.45
Previous 17.8 32.5 3.8 48.6 49.7
Median 15.9 30.50 6.60 78.70 47.0
3.2m 21.50 19.10 0.00 0.0 30.51 hydrogen sulphide smell present
Previous 15.9 27.8 6.1 72.1 43.1
Median 15.9 30.50 6.62 79.90 47.0

Top-Bottom Sampling

Depth m Turbidity NTU pH
Top 0.1 9 7.8
Previous 0.1 10 8.3
Median 0.1 9 8.1
Bottom 4.0 9 7.0
Previous 3.5 10 8.1
Median 3.8 9 7.9

Other details

Max depth 4.10
Previous 3.60
Median 3.90
Flow estimate N/A

Observation Documents

Link Date File name Description
Download 17-01-2026 12:05 img20260117_11503963.pdf

Preceding Observations

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