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  5. 27-08-2025

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A5 Culvert on Coalmine Road

27 August 2025

CAUTION: This observation has not yet been reviewed by an EstuaryWatch coordinator.

Observation details

Overview

Estuary Anglesea River Estuary
Site Culvert on Coalmine Road
Observation ID #17156
Date and Time Wednesday 27th August 2025 11:10am
Approved Pending

Notes

  • large numbers of mosquito larvae observed at this site.
  • water was a iron (burnt orange) in colour upstream and downstream of Coalmine Road.  This was not seen at other monitoring sites. 
  • Upstream of Coalmine Road, the top pH was 3.41 and the dissolved oxygen <5mg/L. 

Depth Profiling

Depth m Temperature °C Salinity ppt D.O. mg/L D.O. % sat EC mS/cm Notes
0.1m 12.70 5.90 3.20 31.2 10.47 pH=3.51
Previous 10.9 8.3 7.3 69.2 14.2
Median 17.0 7.50 8.44 95.50 23.6
0.5m 13.30 8.40 2.30 22.8 14.34 pH=3.69
Previous 9.7 5.9 8.5 78.5 14.1
Median 17.0 7.10 8.44 95.50 23.6
1.0m 13.90 11.40 1.30 14.2 19.00 pH=4.09
Previous 11.7 6.0 4.2 38.3 10.3
Median 16.5 7.50 6.50 72.10 22.8
1.1m 13.60 12.90 0.68 6.1 21.42 pH=4.73
Previous 10.1 6.1 0.0 45.6 13.7
Median 16.5 7.50 7.40 73.60 22.9

Top-Bottom Sampling

Depth m Turbidity NTU pH
Top 0.1 3.5
Previous 0.1 9 4.5
Median 0.1 9 4.1
Bottom 1.1 4.7
Previous 1.0 9 3.3
Median 1.1 9 5.2

Other details

Max depth 1.20
Previous 1.30
Median 1.25
Flow estimate N/A

Observation Documents

Link Date File name Description

Download 		27-08-2025 15:34 Anglesea_20250827_6.jpg

Download 		27-08-2025 15:34 Anglesea_20250827_5.jpg

Download 		27-08-2025 15:34 Anglesea_20250827_2.jpg

Download 		27-08-2025 15:34 Anglesea_20250827_3.jpg

Preceding Observations

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