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Observation details

Overview

Estuary Gellibrand River Estuary
Site Gellibrand River Estuary Mouth Observation Site
Observation ID #11154
Date and Time Sunday 30th April 2017 11:20am
Approved Approved

Notes

Flow is both in & out. The darker discharge is not visible - held back by incoming waves sending salt water (green) upstream of rocks. Long shore drift across mouth over outflow meeting SW/WSW swell - creating a whirl pool around rocks.

Waves are travelling far into the estuary over an unusual sand formation extending north alongside channel. Recent storms have created both wind & wave action that has re shaped dunes, beach & channel.

Beach has high slopping face- very high midway ( beach very curved) where waves are frequently over topping. (very high & very low tides occuring) A high sand projection at near east end extends far into sea where large areas of sand can be seen in backwash

24 Coots & 1 Black duck on estuary

 

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 North-West
Beaufort Scale Moderate breeze
Sea State Rough

Water Levels and Tides

Water Level Start Finish
Height (m) 0.81m 0.90m
Time (hh:mm) 11:20 12:55
Tidal influence Yes
Tidal Range Time Height
High 14:39 1.190
Low 07:08 0.220

Observation Documents

Link Date File name Description
30-04-2017 12:35 Gp1_20170430_1_212_0741.JPG gp1_1
30-04-2017 12:35 Gp1_20170430_2_252_0742.JPG gp1_2
30-04-2017 12:35 Gp1_20170430_3_292_0743.JPG gp1_3
30-04-2017 12:35 Gp1_20170430_4_332_0744.JPG gp1_4
30-04-2017 12:35 Gp1_20170430_5_372_0745.JPG gp1_5