Observation #11154 30-04-2017 | GMC: Gellibrand River Estuary Mouth Observation Site

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	C C C C C C P C O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O P O P C C O O O O O O O C O C C C O O O
Flow Present?	Yes
Previous	N N N N N N N N Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y N N Y Y Y N Y Y Y N N N N N Y Y Y
Flow Direction	Out
Previous	N N N N N N N N O O O I I I O O O O I O O O I O O O O O O O O O O O O O O O I I O O O I O I N N O O I N O O O N N N N N O O O

	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
Download	30-04-2017 12:35	Gp1_20170430_1_212_0741.JPG	gp1_1
Download	30-04-2017 12:35	Gp1_20170430_2_252_0742.JPG	gp1_2
Download	30-04-2017 12:35	Gp1_20170430_3_292_0743.JPG	gp1_3
Download	30-04-2017 12:35	Gp1_20170430_4_332_0744.JPG	gp1_4
Download	30-04-2017 12:35	Gp1_20170430_5_372_0745.JPG	gp1_5