Centenary Dam Remedial Works

Remediation of Centenary Dam's embankment crest and upstream face to improve structural stability, erosion protection and long-term dam safety.

Scope

Keystone Civil was engaged by Central Highlands Water to deliver crest and upstream embankment remediation works at Centenary Reservoir in Maryborough. The project focused on restoring deteriorated infrastructure and strengthening the safety and performance of the 390-metre-long earth embankment.

Works included stripping and reconstructing the existing dam crest using engineered earthfill, followed by placement and compaction of crushed rock capping. The upstream face was reshaped and stabilised through construction of a rockfill berm, installation of graded filter layers and placement of rip rap erosion protection, incorporating reuse of suitable existing rock.

Additional works included reinstatement of crest instrumentation, piezometers and permanent survey marks, along with final surface grading and access improvements.

Project Delivery

Construction was carefully staged around controlled reservoir drawdown, embankment stability and water supply requirements. Close coordination with Central Highlands Water, progressive quality inspections and environmental controls supported safe delivery while protecting the dam's clay core and surrounding water supply infrastructure.

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