Callide Dam Gates Project

Callide Dam Gates Project

Callide Dam, Biloela, Queensland

This maintenance project has been set up to investigate and remediate Callide Dam’s gates to address intermittent occurrences of vibration during their operation. This project will ensure ongoing dam safety and long-term water security.

Project overview

The Callide Dam Gates Project has been set up to investigate and remediate the spillway gates to address intermittent occurrences of vibration during their operation and ensure ongoing dam safety and long-term water security.

Since their installation in 1988, the spillway gates have operated on seven flood event occasions, and during three of these, Sunwater has observed vibrations in the gates. Despite ongoing investigations, including engagement with numerous experts, no cause had been identified for the vibration events.

Since May 2021, Sunwater has been carrying out investigations and work at the dam to find the best possible solution to address gate vibrations.

As these investigations and some of the solution works are now complete, the dam’s operating level (which was reduced in June 2021) has been increased from 69 per cent to 94.1 per cent of the temporary full supply level. More information about this change is available on the safety and emergency management page.

We expect that the full solution to address the gate vibrations will be completed in 2022, after the wet season. Sunwater will then return the dam to the original full supply level that was in place prior to project commencement.

Background

Callide Dam is a gated dam with its primary function being to store water for regional irrigation, industrial and urban use.

Callide Dam’s six large spillway gates were installed in 1988 and are an integral part of its operating system, allowing flows from upstream to pass through the dam. The gates’ operations protect the integrity of the dam structure and from water rising above the full supply level, to minimise the risk of dam overflow. Find out more about Callide Dam here.

Community engagement

Sunwater is committed to engaging openly and transparently with its customers, stakeholders and community. The safety of our people and the community is our number one priority.

Location

Callide Dam, approximately 12km from Biloela in Central Queensland.


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