Clarrie Hall Dam wall to close for seven weeks

Mt Warning from Clarrie Hall Dam in the Tweed Valley.

Mt Warning from Clarrie Hall Dam in the Tweed Valley.

Investigating the strength of the underground rock and its suitability as a building material to raise wall of Clarrie Hall Dam will begin on Tuesday, July 11.

The gate to the dam wall will be locked throughout the seven-week drill program ‘to ensure public safety,’ said Manager Water and Wastewater Anthony Burnham.

Tweed council resolved in December 2015 to begin planning for and buying the land needed to raise the wall of the dam to increase the capacity of the Tweed District Water Supply. Six test bore holes up to 30m deep will be drilled in the area of the proposed spillway for the raised dam and where the dam wall will be extended.

Meanwhile, Council is working with the affected communities of Doon Doon and Commissioners Creek on options to continue to provide road access to the upper catchment once the dam wall is raised and McCabe’s Bridge is inundated.

As yet, Council has not selected a preferred option for providing continued road access but is undertaking further investigations into building a new higher bridge at the existing McCabe’s Bridge site and building an entirely new road into the area.

‘We met with the affected community in late June and they asked us to do more work on both these options,’ continued Burnham.

‘When we know more about what each of these options entails and what each would cost, we will go back to the affected community and talk with them again.’

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