Observation #12901 03-05-2019 | GMC: Gellibrand River Estuary Mouth Observation Site

Observation details

Overview

Estuary	Gellibrand River Estuary
Site	Gellibrand River Estuary Mouth Observation Site
Observation ID	#12901
Date and Time	Friday 3rd May 2019 10:45am
Approved	Approved

Notes

AHD G6 1.42 @ 08:40

Shallow outflow opening wide over sand build up at entrance - very large amount of sand visible under water in estuary extending past tunnel entrance. sea moderate but some high sets breaking on sandbar about 50m. out & going very high up on beach. Occasional small waves from longshore drift & incoming sw swell going part way up channel to where it narrows down to about 2m.wide. Waves are going over top of high sand build up at mid beach (formerly a narrow projection but now extending towards east end of beach) where water then runs east along an area on top of high sand to slightly lower area where abruptly turning towards ocean it scours out narrow N/S channel - very large amount of sand visible in outflow & back wash in ocean at that area

Water level in downstream of G2 is high, water over top track & nearly up to ocean car park. No water on any roads but at side of OOR between flood markers & GOR. Flats south side of G4 & downstream have visible water cover - further upstream water from runoff (about 30 ml. on 01-05-19) is only in very low areas & drains

Mouth Observation

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

	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)	1.39m	1.39m
Time (hh:mm)	10:45	13:52
Tidal influence	Yes
Tidal Range	Time	Height
High	12:48	0.870
Low	06:17	0.420

Observation Documents

Link	Date	File name
Download	05-05-2019 13:35	Gp1_20190503_1_212_0635.JPG
Download	05-05-2019 13:35	Gp1_20190503_2_252_0636.JPG
Download	05-05-2019 13:35	Gp1_20190503_3_292_0637.JPG
Download	05-05-2019 13:35	Gp1_20190503_4_332_0638.JPG
Download	05-05-2019 13:35	Gp1_20190503_5_372_0639.JPG