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H1 Site one (Hopkins River Bridge)

21 June 2026

Observation details

Overview

Estuary Hopkins River Estuary
Site Site one (Hopkins River Bridge)
Observation ID #17611
Date and Time Sunday 21st June 2026 15:00pm
Approved Approved

Notes

Great results everyone.  Great to see some rainfall and streamflow, reflected in the extremely fresh upper water column.  This also aligns with the high tannin observation that you've made.  D.O.'s look good to throughout which is great.  Thanks Jarred.

Depth Profiling

Depth m Temperature °C Salinity ppt D.O. mg/L D.O. % sat EC mS/cm Notes
0.1m 12.90 2.80 6.65 91.5 5.24 high tannin
Previous 15.9 9.6 8.5 91.3 16.4
Median 17.3 12.30 9.05 100.00 20.5
0.5m 12.90 2.80 9.61 91.1 5.25
Previous 14.4 11.5 9.1 94.1 19.2
Median 17.3 12.30 9.05 100.00 20.5
1.0m 12.60 3.00 9.34 88.1 5.51
Previous 15.2 12.1 6.5 69.4 20.2
Median 16.6 20.80 8.50 96.70 33.1
1.5m 13.00 5.10 8.04 77.0 8.99
Previous 14.4 11.5 9.3 96.9 19.3
Median 16.6 20.80 8.50 96.70 33.1
2.0m 14.00 21.60 5.25 57.3 34.32
Previous 15.6 17.7 6.9 77.1 28.4
Median 16.0 26.10 7.70 89.60 40.8
2.5m 14.50 26.20 5.82 66.2 40.62
Previous 15.2 15.6 7.2 77.0 25.4
Median 16.1 27.00 7.77 89.90 42.1
3.0m 14.70 29.00 5.51 63.8 44.84
Previous 15.8 23.3 5.2 59.4 36.8
Median 16.0 30.20 6.53 78.30 46.6
3.3m 14.70 29.40 5.36 62.2 45.41
Previous 16.0 23.4 3.2 30.6 37.2
Median 16.0 30.20 6.53 78.30 46.6

Top-Bottom Sampling

Depth m Turbidity NTU pH
Top 0.1 9 8.1
Previous 0.1 9 8.0
Median 0.1 9 8.1
Bottom 3.4 9 7.5
Previous 3.5 9 8.7
Median 3.8 9 7.9

Other details

Max depth 3.50
Previous 3.60
Median 3.90
Flow estimate N/A

Observation Documents

Link Date File name Description
Download 21-06-2026 17:23 img20260621_17120506.pdf

Preceding Observations

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