Observation details

Overview

Estuary Gellibrand River Estuary
Site Old Coach Road Bridge Princetown
Observation ID #11875
Date and Time Monday 12th March 2018 10:30am
Approved Approved

Notes

AHD G2   0.37 @ 10:55  - dropped to 0.35 @ 14:55 G6  0.40 @ 15:17

Slight current going downstream, but wind driven waves from south going upstream to G2

Oily slick on surface of water in sheltered areas on west bank

Depth Profiling

Depth m Temperature °C Salinity ppt D.O. mg/L D.O. % sat EC mS/cm Notes
0.1m 18.10 1.80 1.79 19.1 3.40 E.C. erratic
Previous 19.8 1.6 0.5 5.4 3.8
Median 18.1 1.90 7.12 72.50 3.8
0.5m 18.10 1.80 1.68 18.0 3.49 "
Previous 20.7 1.1 5.8 65.4 2.2
Median 17.2 1.90 7.12 72.50 3.6
1.0m 18.10 2.10 1.47 15.6 4.02 "
Previous 20.1 2.0 0.3 3.4 3.9
Median 18.2 2.80 6.97 71.00 5.2
1.5m 18.00 3.60 0.25 2.6 6.56 "
Previous 20.8 1.2 5.8 65.0 2.3
Median 18.0 2.80 6.97 71.00 5.2
2.0m 17.80 4.20 0.08 0.9 7.55 "
Previous 20.1 2.4 0.4 4.6 5.8
Median 17.1 21.10 5.79 64.30 33.5
2.5m 17.90 4.70 0.04 0.5 8.45
Previous 20.5 2.0 4.6 56.4 4.2
Median 16.6 21.10 5.79 64.30 33.5
3.0m 18.70 30.20 0.04 0.5 46.45
Previous 19.1 29.6 0.0 0.4 45.3
Median 17.2 29.80 3.27 40.00 45.9
3.5m 18.60 31.30 0.04 0.5 47.94
Previous 19.6 28.0 0.0 0.5 43.3
Median 17.2 30.00 3.38 41.50 46.0

Top-Bottom Sampling

Depth m Turbidity NTU pH
Top 0.1
Previous 0.1 9 6.6
Median 0.1 9 6.8
Bottom 3.5
Previous 4.4 10 6.9
Median 4.2 14 7.2

Other details

Max depth 3.60
Previous 4.63
Median 4.30
Flow estimate Slow

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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