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GMC Gellibrand River Estuary Mouth Observation Site

19 December 2019

Observation details

Overview

Estuary Gellibrand River Estuary
Site Gellibrand River Estuary Mouth Observation Site
Observation ID #13468
Date and Time Thursday 19th December 2019 11:10am
Approved Approved

Notes

AHD board @ G6 covered with thick silt -Unreadable

Dark discharge flowing out over an increased height of sand buildup around mouth & to south. SW swell impacting on west side of sand projection mid beach creating backwash & longshore drift which is mixing with incoming swell causing small waves up to rocks then low against east side of channel continuing around & across front of large sand projection to SE corner of lagoon. Area east of 1st rock has been filled with sand & water only flowing through narrow gap between !st & 2nd rock with a larger area of flow against cliff.

Very low tide has exposed large areas of sand on ocean beach & in lagoon where areas of algae occur along east side of lagoon. Algae is also covering areas of both west & north wetlands

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-East
Beaufort Scale Fresh breeze
Sea State Moderate

Water Levels and Tides

Water Level Start Finish
Height (m) 0.38m 0.35m
Time (hh:mm) 11:10 13:28
Tidal influence Yes
Tidal Range Time Height
High 13:10 0.780
Low 10:23 0.530

Observation Documents

Link Date File name Description
22-12-2019 13:25 Gp1_20191219_1_212_850.JPG gp1_1
22-12-2019 13:25 Gp1_20191219_2_252_852.JPG gp1_2
22-12-2019 13:25 Gp1_20191219_3_292_853.JPG gp1_3
22-12-2019 13:25 Gp1_20191219_4_332_854.JPG gp1_4
22-12-2019 13:25 Gp1_20191219_5_372_855.JPG gp1_5
22-12-2019 13:25 Ge_20191219_sand_in_channel_at_rocks_845.JPG
22-12-2019 13:25 Ge_20191219_entrance_upstream_847.JPG
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