Scrivener Dam: flood gate remediation

Image
This image is an aerial shot of Scrivener Dam showing the encapsulation within the sluice and flood gates with a view to Telstra Tower.
Completion Date
Mid 2026
Temporary Road or Lake Closures
No

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Project overview

The National Capital Authority is carrying out remediation to one of the 5 flood gates which operate within Scrivener Dam. The flood gates are one of the dam’s most important operational features, playing a key role in Canberra’s flood management system. They assist in controlling the level of Lake Burley Griffin and releasing water into the Molonglo River as needed.

How are they different from sluice gates? Whilst sluice gates are designed for controlled, routine water regulation consisting of smaller and more precise flows, flood gates are designed primarily for large, rapid water releases commonly associated with floods.

These works will increase the longevity of the gates, remove lead paint risk and protect against corrosion. The remediation works include removal of the existing degraded coating material, repair of corrosion and recoating. 

Project status

Works started on site in May 2026 including the installation of scaffolding and associated encapsulation to ensure a contained work zone.

Activities on site include abrasive blasting, corrosion repair and recoating. The works will be undertaken in stages to manage access to the upstream face, internal surface and downstream faces. 

Works are expected to be completed by the end of August 2026 (weather permitting).