Observation #12001 19-04-2018 | GMC: Gellibrand River Estuary Mouth Observation Site

Observation details

Overview

Estuary	Gellibrand River Estuary
Site	Gellibrand River Estuary Mouth Observation Site
Observation ID	#12001
Date and Time	Thursday 19th April 2018 07:25am
Approved	Approved

Notes

Artificial opening occurred @ 09:10. No flow before opening but waves had been over the berm reaching the estuary at last hi tide. Tidal range both very high & low 1.17 - 0.27

Beach formation had changed into 2 separate small bays divided by a sand projection at mid beach. East end of beach was being strongly impacted by SW swell reducing the sand 'cliffs' formed earlier.. Area west of sand spit only slightly impacted

Slight pale discharge only around the mouth & travelling west just after opening. Large amount of sand visible in water. About 10:30 waves started going up 1st part of channel - backwash carrying out sand. Slight longshore drift across mouth

GOR -water 3/4 way across right lane. OOR Water over large area near flood markers (very large no. Ibis in flooded areas.

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
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
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

	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)	1.69m	1.70m
Time (hh:mm)	07:25	11:25
Tidal influence	No
Tidal Range	Time	Height
High	14:24	1.170
Low	07:23	0.270

Observation Documents

Link	Date	File name	Description
Download	28-04-2018 11:00	Gp1_20180419_1_212_0185.JPG	gp1_1
Download	28-04-2018 11:00	Gp1_20180419_2_252_0186.JPG	gp1_2
Download	28-04-2018 11:00	Gp1_20180419_3_292_0187.JPG	gp1_3
Download	28-04-2018 11:00	Gp1_20180419_4_332_0188.JPG	gp1_4
Download	28-04-2018 11:00	Gp1_20180419_5_372_0189.JPG	gp1_5