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GMC Gellibrand River Estuary Mouth Observation Site

12 March 2010

Observation details

Overview

Estuary Gellibrand River Estuary
Site Gellibrand River Estuary Mouth Observation Site
Observation ID #3263
Date and Time Friday 12th March 2010 10:40am
Approved Approved

Notes

1. Recent rainfall up stream
(07.03.10 - 10.03.10 = 41ml.) has increased flow.
2. Strong out flow -discharge only around mouth and to sw. Channel has moved further to the east (about 8-10m. wide) below rocks with sand build up against cliff.
3. East side of channel has steep side (1m) which is collapsing into flow. Waves in all directions at entrance- longshore drift bringing back more sand into channel
4. Rocks are restricting flow. Water higher behind with a whirlpool. The channel widens in this area to about same as area below.
5.Channel narrows about 30-40m upstream
6. Rocks are exposed at east end and the beach is very wide near mouth
7.Wooden 'gate' at front of tunnel has become detatched and slipped down

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 South-East
Beaufort Scale Moderate breeze Moderate breeze
Sea State Moderate Moderate

Water Levels and Tides

Water Level Start Finish
Height (m) 0.93m 0.90m
Time (hh:mm) 10:40 12:15
Tidal influence Yes
Tidal Range Time Height
High 13:41 0.510
Low 09:03 0.440

Observation Documents

Link Date File name Description
12-03-2010 10:40 Photopoint GP.1
12-03-2010 10:40 Photopoint GP.2
12-03-2010 10:40 Photopoint GP.3
12-03-2010 10:40 Photopoint GP.4
12-03-2010 10:40 Photopoint GP.5
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