Wyangala Dam Wall Raising

A major augmentation of Wyangala Dam will deliver improved water security and flood mitigation benefits for the Lachlan Valley.

Background

In October 2019 the Prime Minister and NSW Premier announced the planning and delivery of three new or augmented dams in NSW. Included in this package was the raising of Wyangala Dam wall to improve water security and drought resilience in the Lachlan Valley.

Wyangala Dam Wall Raising is estimated to cost $650 Million and increase storage by 53% by creating capacity for an additional 650 gigalitres. The project will involve raising the dam wall by around 10 metres, with the exact height and new full supply level to be confirmed throughout the next six to nine months as further detailed investigations, technical assessments and site inspections are undertaken.

The Wyangala Dam Wall Raising Project was identified in WaterNSW’s 20-year Water Infrastructure Study and was selected due to its initial feasibility study and ability to provide the Lachlan Valley greater water security.

The project has been classified as Critical State Significant Infrastructure and it will be delivered on an accelerated timeline while still meeting all the necessary planning requirements.

Project timeline

• Field investigations commence – March 2020
• Inundation mapping reports – September 2020
• “Shovels in the ground” ancillary works commence – October 2020
• Construction works commence - October 2021

WaterNSW is committed to partnering with the community, stakeholders and customers so that together we can achieve the best outcomes from this critical infrastructure project. Community engagement will occur at every stage of the project.

Planning and delivery

For detailed project planning information please visit the NSW Government Planning portal.

Contact us

For more information and to receive project updates please register your interest.

Water NSW will be focused on the following guiding principles in the planning development, and construction of this project :

• Maximising local benefits and opportunities
• Prioritising and leveraging local contractors and services
• Engaging early on environmental and cultural impacts
• Working directly and personally with upstream landholders who may be impacted by inundation from the rise in water levels
• Maximising customer and community benefits Modelling and explaining future flood frequency scenarios
• Having a local point of contact for community groups, stakeholders and landholders

WaterNSW will work closely with the community to address the issues and opportunities that arise through the life of the project in further detail.

Local Business Register

WaterNSW is committed to maximising the local benefits delivered throughout the project. We are working with our project consultants and contractors to ensure they connect with and use local businesses and suppliers in delivery of their services for the project wherever possible.

WaterNSW is collecting a register of local businesses interested in providing support to the Wyangala Dam Wall Raising Project. Please register your interest and provide a short summary of the service your business provides, as well as your business location and preferred method of contact.

The register of local businesses will be provided to our consultants and the awarded construction company for their consideration and direct engagement with you. Please note that registering your interest here is not a guarantee of engagement or form any contract. We are simply expediting and making readily accessible business related data, capacity and capability that exists in the region that could be used for the project.