Observation #12764 13-03-2019 | GMC: Gellibrand River Estuary Mouth Observation Site

Observation details

Overview

Estuary	Gellibrand River Estuary
Site	Gellibrand River Estuary Mouth Observation Site
Observation ID	#12764
Date and Time	Wednesday 13th March 2019 14:45pm
Approved	Approved

Notes

AHD @ G6 1.42 @ 13:35

Very rough seas over night have formed a high sand build up at entrance & along channel blocking flow. Currently some waves are over topping the berm & travelling up into the estuary where a small amount of green water is visible at time of entry. No fresh outflow but some salt return. During the night a 3m. high wave was observed travelling down the channel into estuary where it turned sharply east & travelled along south side of estuary, large mound of seaweed & many shells were deposited around SE corner.

Waves in many directions at entrance with waves going high up on all along beach reaching base of sand dunes below Gp1 site, some very strong longshore drift across mouth - back wash rolling large amount of sand. Also very large amount of sand clearly visible in breakers all along beach & far out to sea

Deep ridges have formed in NE/SW direction in sand below Gp1 site

Depth profile @ G2 shows an increase in E.C. between 2-3 m. down

Mouth Observation

Mouth state	Closed
Previous	O O C C C C C C C C C O O O O O C O O O O O O O O O O O O O O O O O O O O O C O O O O C O O O O O O C C C C C C C C O O O
Flow Present?	No
Previous	Y Y N N N N N N N N N Y Y Y Y Y N Y Y Y Y Y Y Y Y Y Y Y N Y Y Y Y Y Y Y Y Y N Y Y Y Y N Y Y Y Y Y Y N N N N N N N N Y Y Y
Flow Direction	N/A
Previous	O O N N N N N N N N N O O O O O N O I O O O I O O I O O N O I O O O O O O O N O O O O N O O O O O I N N N N N N N N O O O

	Above Sea	Above Estuary
Berm Height (m)
Berm Length (m)

Physical Condition

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

Water Levels and Tides

Water Level	Start	Finish
Height (m)	1.44m	1.44m
Time (hh:mm)	14:45	16:30
Tidal influence	Yes
Tidal Range	Time	Height
High	16:30	0.920
Low	09:53	0.230

Observation Documents

Link	Date	File name	Description
Download	14-03-2019 09:35	Gp1_20190313_1_212_013.JPG	gp1_1
Download	14-03-2019 09:35	Gp1_20190313_2_252_014.JPG	gp1_2
Download	14-03-2019 09:35	Gp1_20190313_3_292_015.JPG	gp1_3
Download	14-03-2019 09:35	Gp1_20190313_4_332_016.JPG	gp1_4
Download	14-03-2019 09:35	Gp1_20190313_5_372_017.JPG	gp1_5