Observation #12194 22-06-2018 | GMC: Gellibrand River Estuary Mouth Observation Site

Observation details

Overview

Estuary	Gellibrand River Estuary
Site	Gellibrand River Estuary Mouth Observation Site
Observation ID	#12194
Date and Time	Friday 22nd June 2018 10:48am
Approved	Approved

Notes

AHD G2 0.56 @ 12:25 G6 AHD water covering AHD board

Dark discharge out around mouth & flowing strongly to east along beach front. Waves in all directions at entrance with small waves entering along channel, turning east along south side of exposed sand at south side of estuary, however strong outflow travelling fast was further west closer to cliff face

Large area of sand exposed at south side of estuary had a sheer face about 20-40 cm.above water level which reduced near turn into channel, then rose again up to 1.50m. near entrance. The sheer sides were gradually collapsing into fast outflow & incoming small entering waves. Low water level had sandbar in estuary well exposed

No roads or tracks had water over & only a small amount from runoff in very low areas of camp ground. No water over OOR at flood markers as flood water is being held back around G4 where water is flowing strongly over the bridge. Some flooding immediately downstream G4 which was draining back into the river channel but upstream all flats have deep extensive water cover & very fast flow from G4 to past G6. Flood water peaked at Burrupa on 20-06-18 late pm at 5.06m.

Mouth Observation

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

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

Physical Condition

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

Water Levels and Tides

Water Level	Start	Finish
Height (m)	0.54m	0.56m
Time (hh:mm)	10:48	12:25
Tidal influence	Yes
Tidal Range	Time	Height
High	16:35	0.910
Low	09:36	0.700

Observation Documents

Link	Date	File name	Description
Download	25-06-2018 05:40	Gp1_20180622_1_212_058.JPG	gp1_1
Download	25-06-2018 05:40	Gp1_20180622_2_252_059.JPG	gp1_2
Download	25-06-2018 05:40	Gp1_20180622_3_292_060.JPG	gp1_3
Download	25-06-2018 05:40	Gp1_20180622_4_332_061.JPG	gp1_4
Download	25-06-2018 05:40	Gp1_20180622_5_372_062.JPG	gp1_5