Planning is underway on the Wivenhoe Dam Improvement Project, with the project currently in Options Analysis phase.
As Somerset and Wivenhoe Dams operate as one system for both water supply and flood mitigation, the outcomes of the Somerset Dam Improvement Project will inform considerations for Wivenhoe Dam. A detailed business case for the Somerset Dam Improvement Project is being prepared and will then be submitted for government approvals.
Major dam upgrades are extremely complex and take years to plan to ensure the best design and constructability option is determined to meet the project objectives and value for money.
We are committed to keeping the community informed and will provide further information as planning progresses.
Reduced full supply level
While planning is underway, Wivenhoe Dam will continue operating at a reduced full supply level of 90%.
Lowering water levels is an industry-accepted practice to manage dam safety and demonstrates our commitment to the ongoing safety of dam infrastructure. South East Queensland has a safe, reliable, and resilient water supply system, stemming from careful and ongoing water security planning and a diverse asset base which allows Seqwater to supplement supply in a timely way when needed.
The reduced level does not significantly impact the long-term water supply security for the region. Periodic reviews will continue until the dam is upgraded to ensure dam safety, water supply and long-term water security are appropriately managed.
