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GMC Gellibrand River Estuary Mouth Observation Site

14 May 2018

Observation details

Overview

Estuary Gellibrand River Estuary
Site Gellibrand River Estuary Mouth Observation Site
Observation ID #12049
Date and Time Monday 14th May 2018 10:40am
Approved Approved

Notes

Observations made around high tide

Natural opening occurred late pm. or overnight 13-05-18 resulting in a strong dark discharge out across a wide entrance proceeding in both an easterly & westerly direction. Strong longshore drift constantly crossing over outflow & meeting incoming a curved SW swell. Intermittent small waves going down channel into estuary. Sea is moderate but high waves are breaking on sand bar close to shore. Large amount of sand carried in backwash & out to sea

Beach has been strongly scoured by recent southerly strong gale to storm force winds creating a small dune in front of existing formation & covering large areas on dunes with deep sand. SW swell continues to impact the east end & a high long sand spit now extends out to sea at middle of beach. Beach is highest just close to entrance

Mouth Observation

Mouth state Open
Previous
Flow Present? Yes
Previous
Flow Direction Out
Previous
Above Sea Above Estuary
Berm Height (m)
Berm Length (m)

Physical Condition

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

Water Levels and Tides

Water Level Start Finish
Height (m) 0.90m 0.89m
Time (hh:mm) 10:40 13:05
Tidal influence Yes
Tidal Range Time Height
High 12:30 1.070
Low 05:46 0.470

Observation Documents

Link Date File name Description
15-05-2018 12:10 Gp1_20180514_1_212_0237.JPG gp1_1
15-05-2018 12:10 Gp1_20180514_2_252_0238.JPG gp1_2
15-05-2018 12:10 Gp1_20180514_3_292_0239.JPG gp1_3
15-05-2018 12:10 Gp1_20180514_4_332_0240.JPG gp1_4
15-05-2018 12:10 Gp1_20180514_5_372_0241.JPG gp1_5
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