Water supply capacity to be doubled

WORK has started on a project that will almost double the capacity of a Gold Coast dam that aims to improve water security in south-east Queensland.

Acting Premier Paul Lucas toured the Hinze Dam yesterday, where the $395 million project will raise the dam wall by 15 metres.

Mr Lucas said that before the dam wall could be raised, they first had to “break” it.

“The clay core that forms the main component of the dam wall gives it strength and keeps the water contained,” he said.

“Now that the core has been cracked we can begin raising the dam wall.”

The Hinze Dam upgrade, which will add 6000 megalitres of drinking water into the south-east Queensland water grid each year, is also providing about 300 jobs.

Work started in January 2008, when the construction team began placing crushed rock up the face of the existing dam wall to increase its width.

Despite heavy rainfall over summer and autumn causing the Hinze Dam spillway to overflow, the project is on track to be completed by December 2010.

About five million tonnes of rock and 430,000 tonnes of clay will be used in the job.



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