Site details

Overview

Estuary Gellibrand River Estuary
CMA Corangamite CMA
Type Physico-Chemical
Site code G5
Site name Coxon's Bridge
Nearest road and town Old Ocean Road, Princetown
Description Bridge at Coxon's
Site access Access via Old Ocean Road. Second bridge along.
Land use
  • Other
  • Rural Grazing
Land use description Grazing land.
Status Active
Observation history 21-04-2007 - 20-03-2020
G5
Phys/Chem Monitoring Site Five

Map

Observations

C Estuary is closed to the sea. O Estuary is open to the sea. P Perched
Turbidity tubes do not measure below 9 NTU; Chart values of 9 should be interpreted as < 9 NTU

Observations

Date 11-04-2019 19-04-2019 17-05-2019 21-06-2019 31-08-2019 20-09-2019 18-10-2019 22-11-2019 20-12-2019 17-01-2020 21-02-2020 20-03-2020
Observation #12845 #12856 #13073 #13162 #13296 #13333 #13365 #13426 #13461 #13511 #13582 #13646

Observation summaries

Turbidity NTU

11-04-2019 19-04-2019 17-05-2019 21-06-2019 31-08-2019 20-09-2019 18-10-2019 22-11-2019 20-12-2019 17-01-2020 21-02-2020 20-03-2020
Top 9.0 10.0 17.0 20.0 17.0 13.0 19.0 17.0 9.0 9.0 9.0
Bottom 9.0 14.0 21.0 21.0 19.0 16.0 17.0 10.0 9.0

pH

11-04-2019 19-04-2019 17-05-2019 21-06-2019 31-08-2019 20-09-2019 18-10-2019 22-11-2019 20-12-2019 17-01-2020 21-02-2020 20-03-2020
Top 6.5 6.3 6.5 6.6 6.6 7.1 6.6 7.1 7.0 7.1 7.1
Bottom 6.6 6.3 6.8 6.8 6.7 6.6 7.0 6.8 7.1

Ammonia mg/L

11-04-2019 19-04-2019 17-05-2019 21-06-2019 31-08-2019 20-09-2019 18-10-2019 22-11-2019 20-12-2019 17-01-2020 21-02-2020 20-03-2020
Top
Bottom

Enterococci orgs/100mL

11-04-2019 19-04-2019 17-05-2019 21-06-2019 31-08-2019 20-09-2019 18-10-2019 22-11-2019 20-12-2019 17-01-2020 21-02-2020 20-03-2020
Top
Bottom

Temperature ° C

11-04-2019 19-04-2019 17-05-2019 21-06-2019 31-08-2019 20-09-2019 18-10-2019 22-11-2019 20-12-2019 17-01-2020 21-02-2020 20-03-2020
Top 14.00 14.10 11.50 8.70 9.50 10.80 12.80 15.10 18.40 18.00 17.20 16.10
Bottom 13.90 14.10 11.60 8.80 9.40 10.70 12.80 15.10 18.40 18.10 17.20 16.10

Salinity ppt

11-04-2019 19-04-2019 17-05-2019 21-06-2019 31-08-2019 20-09-2019 18-10-2019 22-11-2019 20-12-2019 17-01-2020 21-02-2020 20-03-2020
Top 0.10 0.10 0.10 0.20 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10
Bottom 0.10 0.10 0.10 0.20 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10

D.O. mg/L

11-04-2019 19-04-2019 17-05-2019 21-06-2019 31-08-2019 20-09-2019 18-10-2019 22-11-2019 20-12-2019 17-01-2020 21-02-2020 20-03-2020
Top 6.82 7.03 8.36 8.99 9.96 10.80 8.52 8.50 7.76 5.70 6.26 6.14
Bottom 6.75 6.71 8.11 8.85 9.90 9.69 8.37 8.40 7.53 5.80 5.99 6.80

D.O. % Sat

11-04-2019 19-04-2019 17-05-2019 21-06-2019 31-08-2019 20-09-2019 18-10-2019 22-11-2019 20-12-2019 17-01-2020 21-02-2020 20-03-2020
Top 66.20 68.40 77.30 77.50 88.20 97.00 80.80 84.60 83.00 63.10 65.00 62.60
Bottom 65.40 55.20 75.20 76.20 88.20 87.50 79.20 83.60 80.00 61.60 62.40 60.80

Conductivity mS/cm

11-04-2019 19-04-2019 17-05-2019 21-06-2019 31-08-2019 20-09-2019 18-10-2019 22-11-2019 20-12-2019 17-01-2020 21-02-2020 20-03-2020
Top 0.28 0.38 0.29 0.38 0.28 0.29 0.31 0.26 0.26 0.25 0.26 0.26
Bottom 0.28 0.28 0.29 0.38 0.28 0.29 0.31 0.26 0.26 0.25 0.26 0.26
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