Observation #12003 21-04-2018 | GMC: Gellibrand River Estuary Mouth Observation Site

Observation details

Overview

Estuary	Gellibrand River Estuary
Site	Gellibrand River Estuary Mouth Observation Site
Observation ID	#12003
Date and Time	Saturday 21st April 2018 09:30am
Approved	Approved

Notes

Observations made at low tide. Dark discharge out around mouth, usual easterly flow obstructed by sand bar. WSW swell mainly impacting east end of beach, sand spit diverting some waves back towards the entrance but longshore drift is in a WSW direction. Water level low, sheer sides of channel 1.5 -2.5 m close to beach face area. Waves from WSW swell & longshore drift crossing over out flow -waves & currents in all directions

Sand bar has formed from west side of spit to entrance channel & is visible about 15-20 m out running parallel with shoreline

Mouth Observation

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

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

Physical Condition

	Current	Mode
Wind Direction	North-East
Beaufort Scale	Light Breeze
Sea State	Moderate

Water Levels and Tides

Water Level	Start	Finish
Height (m)	0.58m	0.51m
Time (hh:mm)	09:30	11:14
Tidal influence	Yes
Tidal Range	Time	Height
High	15:24	1.110
Low	07:55	0.220

Observation Documents

Link	Date	File name	Description
Download	28-04-2018 13:45	Gp1_20180421_1_212_0214.JPG	gp1_1
Download	28-04-2018 13:45	Gp1_20180421_2_252_0215.JPG	gp1_2
Download	28-04-2018 13:45	Gp1_20180421_3_292_0216.JPG	gp1_3
Download	28-04-2018 13:45	Gp1_20180421_4_332_0217.JPG	gp1_4
Download	28-04-2018 13:45	Gp1_20180421_5_372_0218.JPG	gp1_5