A NSW Government website

Dam projects

Wyangala Dam wall raising

What's happening in October 2022?

  • The Project team is hosting a community drop-in session at the Booligal Community Hall on Tuesday, 25 October 9:00am - 12:00pm. The Project Director, Final Business Case representative team, and environmental planning specialists will be there to answer any questions you may have about the Project.
  • We’re continuing field studies for Spring flora and fauna surveys.
  • We’re continuing construction work on the new Wyangala Water Treatment Plant.
  • Meetings with key stakeholders are ongoing.

Upcoming engagement

  • Tuesday, 25 October 9:00am – 12:00pm at Booligal Community Hall

The project team host regular webinars to meet with the local community and answer questions. Details of upcoming webinars will be listed below.

Session schedule: Stay tuned for the 2022 webinar schedule.


A major augmentation of Wyangala Dam will deliver improved water security, drought resilience and flood attenuation benefits for the Lachlan Valley.

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, drought resilience and flood attenuation in the Lachlan Valley.

The Wyangala Dam Wall Raising project is expected to create capacity for an additional 650 gigalitres, or 53 per cent more storage. The project will involve raising the dam wall to increase the Full Supply Level by 10 metres.

The Wyangala Dam Wall Raising project was identified in the NSW Government’s 20-year Water Infrastructure Study and was selected due to its initial feasibility study and significant benefits to the Lachlan Valley.

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 approvals.


  • 2022 Final Business Case and EIS underway
Important information

Note that project timelines can be affected by a range of factors including weather conditions, increased time to carry out consultation and where technical analysis and assessments require further work or investigation. Water Infrastructure NSW places the highest priority on the safety and wellbeing of its staff and the communities we work with. We are closely adhering to the current COVID-19 Public Health Orders which may have an impact on project activities and timelines. This website will be regularly updated to reflect this and so communities are notified of changes.

Key benefits of the project include:

There are many benefits which will be realised during and after the construction of this project. Key benefits driving the project include:

  • dam storage capacity will be increased by 53 per cent
  • approx. 21 gigalitres per annum additional estimated yield for general security license use
  • a significant improvement in:
    • water security
    • drought resilience
    • flood attenuation for the Lachlan Valley
  • local business and employment opportunities maximised throughout the project.

The Wyangala Dam wall raising is expected to:

  • improve productivity of primary industries
  • provide greater certainty of water reliability to support additional investment by businesses, particularly in the agricultural sector, including:
    • transitioning to higher yield agricultural products
    • increasing stock levels.
  • secure the region’s town water supplies, stimulating the growth of the regional economy and supporting future population growth.

Early works package: new water treatment plant at Wyangala

As the early works package to the proposed Wyangala Dam Wall Raising project, a New Water Treatment Plant will be built to deliver clean, safe drinking water for the Wyangala community and Wyangala Waters Holiday Park.

The new water treatment plant is being delivered as a ‘no regrets’ project as it is separate from the wall raising construction and brings local benefits.

A development application for the new water treatment plant was approved in December 2021. The team began work site set up in February 2022 with construction work to start shortly after.

Construction and commissioning of the new plant is expected to about 12 months, public health orders and restrictions permitting.

Read the latest project updates for more information.

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

Project updates and FAQs

Check out the latest updates about the Wyangala Dam Wall Raising Project.

Project updates

Check out the latest Project Updates which are published regularly to update the community about the Project's progress.

Aerial view Wyangala dam

Frequently Asked Questions

View Frequently Ask Questions to help you better understand the project and what is involved.

Aerial view Wyangala dam

Webinar recordings

The project team host regular webinars to keep the community up to date on the project. You can watch webinar recordings via the links below.


These webinars are for community members who are interested in knowing more and keeping up to date with the progress of the project.

Local businesses

These webinars are for local businesses who are interested in knowing more about opportunities for suppliers on the project.

Wyangala dam wall raising project

Planning and delivery

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

View the Environmental Assessment Requirements (PDF, 232 KB)

Our commitment

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

Guiding principles

Water Infrastructure NSW is committed to these guiding principles in the planning, development, and construction of this project:

  • maximising benefits and opportunities for local people, businesses and communities
  • using local contractors and services
  • engaging early, particularly on environmental and cultural impacts
  • working directly and personally with upstream landholders who may be impacted by inundation from the rise in water level
  • maximising customer benefits
  • modelling and explaining future flood frequency scenarios
  • having a local point of contact for community groups, stakeholders and landholders.

Water Infrastructure NSW 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

Water Infrastructure NSW is encouraging local businesses to register as a supplier for the Wyangala Dam Wall Raising project. The local business register will be provided to the major construction contractors so they can demonstrate how they will maximise local business and employment opportunities as part of the tender process.

For this project local business is defined as 150km from the project area, including Condobolin.

Please note, registering your interest does not guarantee employment.

Register your business

Contact us

To speak with the project team, phone 1800 735 822 or email wyangaladamproject@dpie.nsw.gov.au

Sign up To receive project updates via email, sign up.

Facebook logo Facebook users can also join the Water Infrastructure NSW Wyangala Dam Wall Raising project Facebook page.

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