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GMC Gellibrand River Estuary Mouth Observation Site

17 August 2010

Observation details

Overview

Estuary Gellibrand River Estuary
Site Gellibrand River Estuary Mouth Observation Site
Observation ID #4221
Date and Time Tuesday 17th August 2010 15:30pm
Approved Approved

Notes

1. Strong outflow, waves dark brown full length of beach and out about 1K. to sea
2.Waver travelling into estuary over sand bars & around to east gouging out bank.Bank on south side has sheer front of about 2-3m.cut into dunes
3. Flood water has cut 8-10m. high sheer cliff into dunes on east side of channel
4. Mouth is over 60m. wide(no beach) and 7old piles of break water are exposed
5.Flood water has deposited a huge amount of Phragmites on the beach which is now being returned to the estuary because of reducing force and longshore drift from rough seas
6. Flood water reducing from peak(13.08.10) OOR is clear of water
7.Valley flats are still covered by water
8.G4. deck has been totally removed from bridge and several landslips have occured between G4 &G6.

Mouth Observation

Mouth state Open
Previous
Flow Present? Yes
Previous
Flow Direction Out
Previous
Above Sea Above Estuary
Berm Height (m)
Berm Length (m)

Physical Condition

Current Mode
Wind Direction South-West
Beaufort Scale Gentle breeze
Sea State Rough

Water Levels and Tides

Water Level Start Finish
Height (m) 0.96m 0.75m
Time (hh:mm) 15:30 17:23
Tidal influence Yes
Tidal Range Time Height
High 13:50 0.910
Low 08:53 0.700

Observation Documents

Link Date File name Description
17-08-2010 15:30 Photopoint GP.1
17-08-2010 15:30 Photopoint GP.2
17-08-2010 15:30 Photopoint GP.3
17-08-2010 15:30 Photopoint GP.4
17-08-2010 15:30 Photopoint GP.5
17-08-2010 15:30 Photopoint GP.6
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