Belubula Water Security Project

Delivering resilient water resources for all water users in the Belubula Valley.

Carcoar Dam

About the project

The proposed Belubula Water Security Project aims to improve water availability and increased drought resilience for residents, businesses, and the environment across the Belubula Valley.

The department’s Water Group is investigating options aligned with the Lachlan Regional Water Strategy and the Macquarie-Castlereagh Regional Water Strategy

The following 4 infrastructure options were initially identified for consideration:

A new pipeline between Lake Rowlands Dam and Carcoar Dam to transfer up to 2 gigalitres of water annually.  

Raising the Lake Rowlands Dam wall to increase storage capacity from 4.5 to 8 gigalitres.  

Constructing a new dam 2.5 kilometres downstream of Lake Rowlands.

Connecting the Belubula and Macquarie valleys via an interregional pipeline. 

Outcome

Following stakeholder consultation and initial investigations and analysis in early 2025, 3 options have been shortlisted to be progressed for detailed investigation. These include:

  • option 1: a new pipeline between Lake Rowlands Dam and Carcoar Dam to transfer up to 2 gigalitres of water per year, capturing spills and boosting supply
  • option 2: raising the Lake Rowlands Dam wall to increase storage from 4.5 gigalitres to 8 gigalitres, and
  • a combination of options 1 and 2: a new connecting pipeline between Lake Rowlands Dam and Carcoar Dam and raising Lake Rowlands Dam wall.

Project location

The Belubula Valley is part of the Lachlan catchment in central west NSW, within the traditional lands of the Wiradjuri people.

The Belubula River rises midway between Orange and Bathurst flowing south and west through the towns of Blayney, Carcoar and Canowindra.

Project need

The Belubula Valley has relatively limited storage capacity in Lake Rowlands Dam. The dam fills quickly and frequently overflows, in part due to its limited size and highly variable rainfall. Inefficient water storage and unreliable access to water contribute to making the catchment very sensitive to droughts. The project is investigating a range of solutions to improve water availability and efficiency to ensure the region is in the best position to weather the next drought.

Project benefits

Project benefits would include:

  • improved water access reliability for communities and industries
  • strengthened regional water security.

Belubula investigation areas map.

These options are being investigated for a business case. Feedback from stakeholders and the local community will help shape the analysis and identification of preferred options.

Download the map (PDF. 419KB)

Project funding

The NSW and Australian Governments are jointly funding $7.7 million to develop a Full Business Case for the project, with the Australian Government contributing through the National Water Grid Fund.

Project status

The project is in planning stage. A full business case is required to further assess feasibility and viability of options including the project scope, benefits and cost, and regulatory pathway.

The department’s Water Group will lead this analysis and integrate stakeholder consultation to ensure preferred options are identified and progressed.

The outcomes of these studies and consultations will be included in the full business case, which will guide future funding decisions by the NSW and Australian Governments.

The full business case is expected to be finalised in 2026.

Stakeholder engagement

We are committed to building and maintaining respectful, trusted and collaborative relationships with our communities and stakeholders to ensure water infrastructure projects achieve the best possible outcomes.

We will offer opportunities for communities and stakeholders, including First Nations communities, to engage with us and provide feedback as we develop the full business case for the project.

What we heard 

Consultation on the infrastructure options occurred over two phases during 2024 – 2026.  A what we heard report from each phase of consultation is available.

Phase 1 consultation

The first phase of consultation sought feedback on each of the 4 infrastructure options being explored.

View the What we heard report - September 2025

Phase 2 consultation

The second phase of consultation sought feedback on the shortlisted options.

View the What we heard report - July 2026

Webinars

A recording of each webinar is provided below.

  1. Quarter 4 – 2024

    Introduction and key stakeholders’ consultation

    We introduce the project to key stakeholders.

  2. Quarter 1 – 2025

    Community consultation

    We introduce the project and the infrastructure options to the community and invite your input.

  3. Quarter 2 – 2025

    Shortlisting

    We consider your input alongside our initial studies and shortlist the most viable options.

  4. Quarter 3 – 2025

    Community consultation

    We invite your input on the shortlisted project options.

  5. Quarter 4 – 2025

    Drafting the Business Case

    We consider your input alongside our detailed studies to prepare the business case.

  6. Early 2026

    Finalising the business case

    We finalise the draft business case.

  7. Quarter 3 – 2026

    Submission

    We submit the full business case to Infrastructure NSW for an independent assurance review before consideration by the NSW Government.

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Contact us

For more information call us on 1300 081 047 or email water.enquiries@dcceew.nsw.gov.au