Sunday, February 27, 2011

TRESB Project

1. The project started mainly because of the tweed river and its problems. They dredged the mouth of the tweed river, the river was affecting the beaches. It was a shipping hazard as of the sandbars forming across the river mouth. This was due to the longshore drift which transported much of the sand from Duranbah beach and was being transported to the open river mouth and being deposited there. 


2. They dredged the mouth of the tweed river, therefore the breakwaters would no longer effect the beaches. The dredging process aims to replicate longshore drift. Sand is pumped from where it builds up on the southern side of the Tweed River via a system of pipes, across the Tweed River to one of four outlets where sand is realeased onto the beach. 


3. The project was extremely effective as the beaches went back to their normal size if not bigger. They area's affected are coolangatta beach, greenmount beach, rainbow bay and Duranbah beach. The actual land was obviously affected as they needed to put the pipes in so a lot of the ground was dug up. Where the station is located affected no one as it was uninhabited

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