In 2012-13, we commissioned an independent review of our 26 referable dams, which found improvements are needed at a number of our dams to meet the Queensland dam safety guidelines into the future.
We have prioritised a program of dam upgrades in a staged approach to give us time to scope, design and plan, while maintaining public safety, security of water supply and delivering best value for money.
Leslie Harrison Dam upgrade
In 2014, the gates at Leslie Harrison Dam were removed and the water level was lowered to allow us to safely operate the dam, while our investigations continued.
Lowering water levels is an industry-accepted practice to best manage the safety of dams either temporarily or in the long term. Lowering the water level in a dam reduces water pressure and loads on the dam wall, and can also create temporary storage to increase its capacity to mitigate floods. The lowered dam water level will not affect water security in the region.
Seqwater will make a decision on the detailed design and timing of the upgrade works in mid-2017. The timing of this investment decision has changed over time due to ongoing investigations and the prioritisation of other dam upgrades.
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