Observation #12830 25-03-2019 | GMC: Gellibrand River Estuary Mouth Observation Site

Observation details

Overview

Estuary	Gellibrand River Estuary
Site	Gellibrand River Estuary Mouth Observation Site
Observation ID	#12830
Date and Time	Monday 25th March 2019 10:05am
Approved	Approved

Notes

AHD G6 1.56 @ 09:37 1.59 @ 16:10

Mouth perched, flow both in & out. High seas & WSW swell (8-15 secs.) = waves over 6m. impacting beach sending waves all along up to the dunes & completely across the entrance & down the channel. Hi tide about 15:00 combined with strong longshore drift sent waves into the estuary - green water was visible at start of channel from estuary. Incoming waves were going over top of water returning across a wide front. A whirlpool occurred at start of estuary. Near gale force winds from many directions around estuary, channel & beach

Increasing water cover at edge of roads,& on flats DS G4. Small area of water starting to cross OOR at flood markers. Fishing platform structure completely under water by 15:55

Mouth Observation

Mouth state	Perched
Previous	C C C C C C O O 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 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
Flow Present?	No
Previous	N N N N N N Y Y Y Y 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
Flow Direction	N/A
Previous	N N N N N N O O O O 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

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

Physical Condition

	Current	Mode
Wind Direction	North
Beaufort Scale	High wind, moderate gale, near gale
Sea State	High

Water Levels and Tides

Water Level	Start	Finish
Height (m)	1.58m	1.60m
Time (hh:mm)	10:05	15:55
Tidal influence	Yes
Tidal Range	Time	Height
High	15:05	1.090
Low	08:44	0.180

Observation Documents

Link	Date	File name
Download	07-04-2019 15:25	Gp1_wave_along_beach_entering_channel__copy_2.jpg
Download	07-04-2019 15:25	Gp1_20190325_storm_surge_down_channel_.jpg
Download	07-04-2019 15:25	Ge_20190325_waves_amp_outflow_both_over_wide_area_033_copy.jpg
Download	07-04-2019 15:25	Ge_20190325_wave_entering_estuary_088.JPG
Download	07-04-2019 15:25	Ge_20190325_water_crossing_OOR_2_092.JPG