GCWA makes no warranty, representation, or guarantee, express or implied, as to the accuracy, completeness, content, reliability, suitability, or timeliness with respect to the information or related graphics. It should not be relied upon as the basis for making any decision, whether a business, conveyance, development, property boundary, property description, property title, property transaction, or any other decision. It is not a cadastral survey or hydrographic survey product. GCWA’s tidal works mapping information is a public resource for general information purposes only. The sand will return to its natural ‘white’ colour within two months of dredging. The dark appearance of this sand will change as the particles settle out and become bleached by the sun. Dredged sediment is often clean sand that can be used to replenish and restore beaches, shorelines, and habitats.įor a short period of time, dredged sand may appear dark due to fine sediment particles from the seabed. With this machine, we collect sediment from the bottom of the channel and move and shape reused sand. Using a cutter head, it moves across the bottom of the channel, sucking up sediment and delivering it through a floating pipeline to the adjacent foreshore. Some common dredging vessels you’ll see are the trailing suction hopper dredge or cutter suction. When we undertake dredging projects, we will notify the public to ensure everyone is aware that work is underway (or scheduled) on our website and via our social media channels: Facebook | Instagram. You’ll see our contractors working on dredging maintenance along the waterways and foreshore.
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