Short answer: The Sienna Grange dam project showcases what can be achieved when expert planning, quality earthworks, and careful site management come together in a showcase rural dam build. From initial site assessment through to final compaction and spillway construction, every stage was executed to the highest standard. The result is a reliable, attractive water storage that will serve the property for decades.
Last updated: April 2026 | Author: Angus Hughson, Big Ditch Aquatecture
📋 Quick Answer
Big Ditch Aquatecture has been constructing and repairing farm dams across New South Wales, Queensland, and Victoria for over 35 years. Every farm dam built to the right standards — correct clay, proper compaction, adequate spillway — can provide 50–100+ years of reliable water storage.
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These are new dam design concepts for Australian Unity – a major Australian company that operates premium aged care facilities around Australia.
These concepts are for their architecturally designed ‘Sienna Grange’ facility – located in the beautiful coastal town of Port Macquarie.
This high priority project, which is at the heart of the facility, involves converting a landscape void into a spectacular water feature for residents who love open space, fresh air and the serenity of beautiful water.
The design concepts go to great lengths to create an atmosphere of friendship and wellbeing – while strongly incorporating the Australian Unity brand value of being ‘Better Together’
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About Big Ditch
Big Ditch Dam Building Company builds and repairs farm dams across NSW, Queensland, and Victoria. Contact us for a site inspection.
Need help with your own dam? Book a site inspection with Big Ditch — we build and repair dams across NSW, Queensland, and Victoria.

