Buffalo Dam has played a vital role in water supply and irrigation for the Wangaratta region and the Ovens Valley since its construction in 1965. The dam provides water for town supply, agriculture, and environmental flows, supporting local communities and industries.

To ensure its ongoing reliability, we are undertaking essential upgrades to key infrastructure. The dam’s two outlet valves, which control water releases, have been in place for nearly 60 years and have now reached the end of their nominal useful life. These valves, along with associated equipment, will be replaced or refurbished as part of this project.

By investing in this upgrade, we are securing the long-term sustainability of Buffalo Dam and ensuring it continues to operate safely and efficiently for generations to come.

Project Update – June 2025

Irrigation Valve No. 2 has now been successfully removed after nearly 60 years submerged beneath Lake Buffalo. The valve has been replaced with a blanking flange, marking a significant milestone in the project and improving operational safety.

The removed valve has been transported to GMW’s IDS Workshop in Tatura for detailed inspection and assessment. This complex and high-risk task was made possible through close collaboration between GMW teams and our project partners.

Next Steps

What to expect

Road Closure & Traffic Changes

  • Buffalo River Road will be closed Weekdays, near the Weir from Monday, 26 May, to Friday, 6 June 2025, between 8am and 4pm daily.
  • A signed detour route will be in place to assist road users.
  • Traffic delays may occur, and we encourage drivers to plan ahead.

Minimal Impact on Water Supply

  • The upgrade will be staged to ensure water availability for customers, with only one valve being replaced at a time.

Timeline

  • Timeline item 1 - complete

    May 2025

    Pre-construction site preparations and installation of detour signage

  • Timeline item 2 - complete

    Monday, 26 May to Friday, 6 June 2025

    Road closure on Buffalo River Road near the Weir to allow for critical infrastructure work. Detours will be in place during this time

  • Timeline item 3 - active

    Mid-2025

    Completion of valve replacements and testing of upgraded infrastructure

Detour Maps & Routes

During the road closure on Buffalo River Road near the Weir, detour routes will be in place to ensure minimal disruption to your journey. Below you'll find a detailed map outlining the detour routes

During the road closure on Buffalo River Road near the Weir, detour routes will be in place to ensure minimal disruption to your journey. Below you'll find a detailed map outlining the detour routes

Contact Us

Have questions or want to learn more about a project, contact us below:

Contact Information
Name Adrian Pawlowicz
Phone 1800 013 357
Email Adrian.Pawlowicz@gmwater.com.au