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GMC Gellibrand River Estuary Mouth Observation Site

10 March 2018

Observation details

Overview

Estuary Gellibrand River Estuary
Site Gellibrand River Estuary Mouth Observation Site
Observation ID #11905
Date and Time Saturday 10th March 2018 10:40am
Approved Approved

Notes

 Mouth opened  - cut through very high berm  completed @ 15:20 

AHD G6 1.45 @ 09:05     -       1.46 @ 15:45

Low tide before opening exposed very wide area in front of berm where a 2nd small berm was forming close to cliff.

Estuary was completely across channel from cliff to dunes & front was wider &  moved closer to ocean. Water was very reddish in colour with some areas of algae formed in areas of shallow water close to stream side veg.

Strong  wave impact & backwash at mid beach moving a large amount of sand. Strong longshore drift from this area in front of berm to cliff face

No water over any roads (some at side of OOR near flood markers) Low track to beach completely covered & some water in lowest area of hi track. Camp ground has small areas of damp & water in SW area - from rising water table only

 

Mouth Observation

Mouth state Closed
Previous
Flow Present? No
Previous
Flow Direction N/A
Previous
Above Sea Above Estuary
Berm Height (m) 1.8m 0.9m
Berm Length (m)

Physical Condition

Current Mode
Wind Direction South
Beaufort Scale Light Breeze
Sea State Slight

Water Levels and Tides

Water Level Start Finish
Height (m) 1.50m 1.50m
Time (hh:mm) 10:40 15:45
Tidal influence No
Tidal Range Time Height
High 03:48 0.810
Low 10:46 0.270

Observation Documents

Link Date File name Description
21-03-2018 07:35 Gp1_20180310_1_212_0037.JPG gp1_1
21-03-2018 07:35 Gp1_20180310_2_252_0038.JPG gp1_2
21-03-2018 07:35 Gp1_20180310_3_292_0039.JPG gp1_3
21-03-2018 07:35 Gp1_20180310_4_332_0040.JPG gp1_4
21-03-2018 07:35 Gp1_20180310_5_372_0041.JPG gp1_5
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