Lake Wyangan System Closed system within a catchment of 7,000 ha Irrigation supplies to around 200 properties Ageing concrete-lined gravity supply channels Constrained system limited to 220 ML/day Mix of hobby blocks, horticulture and large area Social amenity provided by Lake Wyangan Background
Lake Wyangan Project Replace ageing infrastructure that is at risk of failure Enable delivery of contracted levels of service Minimise the impact on water levels and water quality and the overall environmental health of the Lake Wyangan catchment Realise the estimated water savings target for the project Objectives
Lake Wyangan Project Upgrade the existing supply system –Focus on renewal of ageing assets over water savings Reconfigure the existing system –Focus on providing a secondary supply system for some areas to address capacity constraints Build new assets to alleviate requirement to upgrade some capacity constraints –Focus on creating new asset over renewal of existing assets Options considered
Lake Wyangan Modernisation Reline and widen 15.8km of ageing concrete-lined Lake View Branch Canal ( 122,000 sq. m of shotcrete lining) Replace open channels and pipelines at the end of their working lives with 13.8km of GRP and PVC gravity pipelines Replace Dethridge wheels with electromagnetic flow meters compliant with AS4747 Automation of regulators and escape structures Install remote monitoring of flow meters Scope
Construction Schedule Timing May 2013 –Nov 2014Nov 2013/Nov 2014 Planning options Survey and detailed design Outlet designs Stakeholder forums Individual face-to- face meetings Construction: –Civil –Mechanical –Electrical –Automation Acceptance testing New system begins operation Key steps Oct 2011– ongoing Oct 2011 – May 2013 Planning and design Construction Testing/ Commissioning Building relationships
Lake Wyangan Modernisation Forecasting future customer behaviour and intentions Managing customer expectations Developing and adopting new design rules Establishing new business processes Anticipating changes to operating practices Compressed construction window Delivering a successful project for MI, customers and the region Challenges
Acknowledgement The Lake Wyangan Modernisation Project received Australian Government funding of $50 million through the Private Irrigation Infrastructure Operators Program in NSW
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