Observation #10462 29-10-2016 | GMC: Gellibrand River Estuary Mouth Observation Site

Observation details

Overview

Estuary	Gellibrand River Estuary
Site	Gellibrand River Estuary Mouth Observation Site
Observation ID	#10462
Date and Time	Saturday 29th October 2016 07:50am
Approved	Approved

Notes

Dark discharge out along foreshore

Strong outflow but small waves entering & travelling north across the sandbar

Sea rough with occasional very high set of waves -SW swell continues to impact east end of beach causing long-shore drift to mouth. Previously high sand near east end has been reduced in height by wave action. Swash-line high up on beach (many purple shells)

Recent storm surges have deposited more sand into the estuary extending sand at south side further north into the estuary(observation taken near low tide).Sand bar visable with channel partly cut into middle. The deep scour areas along low track have been filled in and new ones created. Areas of black sand at start of channel from estuary

Maram grass regeneration along base of dunes closer to mouth. Increase of Euphorbia paralais & senecio elegans along dunes

Thousands of small eels(?)/ fish making their way upstream observed at G4. moving along vev at side of channel away from strong flow

Rivernook flats have no visable water cover but all areas up stream to G6 are under water- no flood water below G4

Mouth Observation

Mouth state	Open
Previous	O O O O O C C C C C C O O O O O O C C O C C O C C C C C O O O O O C C C 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
Flow Present?	Yes
Previous	Y Y Y Y Y N N N N N N Y Y Y Y Y Y N N N N N N N N N N N Y Y Y Y Y N N N 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
Flow Direction	Out
Previous	O O O O O N N N N N N O O O O O O N N N N N N N N N N N O O O O O N N N 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

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

Physical Condition

	Current	Mode
Wind Direction	North
Beaufort Scale	Gentle breeze
Sea State	Rough

Water Levels and Tides

Water Level	Start	Finish
Height (m)	0.42m	0.50m
Time (hh:mm)	07:50	09:45
Tidal influence	Yes
Tidal Range	Time	Height
High	12:44	0.800
Low	07:11	0.470

Observation Documents

Link	Date	File name	Description
Download	29-10-2016 07:50	Gp1_20161029_1_212_8352.JPG	gp1_1
Download	29-10-2016 07:50	Gp1_20161029_2_252_8353.JPG	gp1_2
Download	29-10-2016 07:50	Gp1_20161029_3_292_8354.JPG	gp1_3
Download	29-10-2016 07:50	Gp1_20161029_4_332_8355.JPG	gp1_4
Download	29-10-2016 07:50	Gp1_20161029_5_372_8356.JPG	gp1_5