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GMC Gellibrand River Estuary Mouth Observation Site

10 November 2019

Observation details

Overview

Estuary Gellibrand River Estuary
Site Gellibrand River Estuary Mouth Observation Site
Observation ID #13395
Date and Time Sunday 10th November 2019 14:49pm
Approved Approved

Notes

AHD G6 3.24 @ 14:28

Very dark strong discharge out around the mouth for about 100 m. also continuing a long way to the east along the shoreline. Eastern end of beach covered with dark silt. The strong outflow has created sheer east side to channel about 1 m. high above water level (87 ml rain @ G6 over past 8 days). Beach is undulating & scouring areas especially at mid beach where backwash is taking out a lot of sand  -waves in all directions at this area creating occasional longshore drift across mouth. Large amount of sand build up remains downstream of rocks but is being covered by outflow & entering waves. More erosion on east face of Pt. Ronald.

Large areas of deep flood water covering large areas from G4 & G5 (also some between G5 &G6) but very little downstream G4. OOR only had slight flow across near flood markers (run off only.

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 Moderate breeze
Sea State Rough

Water Levels and Tides

Water Level Start Finish
Height (m) 0.85m 0.82m
Time (hh:mm) 14:49 15:05
Tidal influence Yes
Tidal Range Time Height
High 11:52 0.750
Low 18:49 0.420

Observation Documents

Link Date File name Description
11-11-2019 14:55 Gp1_20191110_1_212_693.JPG gp1_1
11-11-2019 14:55 Gp1_20191110_2_252_694.JPG gp1_2
11-11-2019 14:55 Gp1_20191110_3_292_695.JPG gp1_3
11-11-2019 14:55 Gp1_20191110_4_332_00696.JPG gp1_4
11-11-2019 14:55 Gp1_20191110_5_372_697.JPG gp1_5
11-11-2019 14:55 Gp1_20191110_entrance_after_release_701.JPG gp1_1
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