Seqwater, South East Queensland’s bulk water supply authority, has awarded the ASX-listed SRG Global a contract to deliver enhanced safety upgrades at North Pine Dam.
The preparation works come ahead of a major upgrade planned for the dam, which supplies drinking water for the people of north Brisbane and Moreton Bay.
Engineering and construction services provider SRG will commence initial strengthening works on North Pine Dam in mid-2025, as part of a more than $69 million investment into the first stage of improvement works.
This includes installing more than 50 post-tensioned anchors, ranging from 42 to 102 metres in length, into the monoliths that form part of the dam wall.
The anchors will add around 75,000 tonnes of effective weight into the dam wall to further strengthen the structure. Works are expected to be completed by 2027.
North Pine Dam upgrade
Separate from the Staged Strengthening Project, Seqwater is assessing the long-term improvement options for North Pine Dam. This will be the first significant upgrade on the dam since its construction in 1976.
The Options Analysis for the North Pine Dam Improvement Project was completed earlier this year. The analysis confirmed the preferred design option will include raising the dam wall, raising the saddle dams, and upgrading the spillway and gates.
The project has now progressed to the next phase of planning with a Detailed Business Case focusing on developing an effective delivery plan for the upgrade.
While the Dam Improvement Program is underway, North Pine Dam is operating with a reduced full supply level. Seqwater says the reduced supply level does not significantly impact the long-term water supply security for the region.
Seqwater’s executive general manager of Infrastructure, Planning and Capital Delivery, Sarah Dixon, said, “While North Pine Dam continues to operate safely under normal conditions, the North Pine Dam Improvement Project will ensure the dam meets modern engineering and design standards.
“The strengthening works commencing this year will deliver enhanced safety benefits and prepare the dam for its major upgrade in the future.”
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