Access roads upgrades

• pavement remediation and construction upgrades to access roads and causeways
• cleaning debris from existing drainage infrastructure
• upgrading or constructing new drainage infrastructure
• clearing vegetation
• widening approach roads and turning circles to improve manoeuvrability for larger trucks
• repairing potholes.

• Avon Dam: Late May 2026 – late 2026
• Cordeaux Dam: June  2026  – late 2026
• Medlow Dam:  Late 2026

Avon Dam

Public access to Avon Dam will be closed weekdays from 8 June 2026 until late 2026 during construction, to ensure the safety of workers and road users. The dam will be open on weekends.

Please check Avon Dam webpage before visiting for the latest access updates. Visitors may notice temporary disruptions including additional noise machinery and traffic. Please follow all site signage.

WaterNSW apologises for any inconvenience. Weekday visitors are encouraged to consider nearby alternatives such as Nepean Dam, Cordeaux Dam or Cataract Dam.  Please check the dam websites before travelling.

Construction at Avon Dam will include upgrades to the access roads in areas not accessible to the public, however you may notice construction vehicles or activity along parts of the access roads during the works. The dam will be open weekends only from 8 June – late 2026 during construction.

Cordeaux Dam

Construction at Cordeaux Dam will include upgrades to the access roads in areas not accessible to the public. From the dam crest, visitors may hear construction noise or see equipment operating on nearby access roads.

WaterNSW will work closely with impacted stakeholders and provide updates throughout the project.

For more information about the Avon, Cordeaux, and Medlow Dams – access road upgrades, please contact our Engagement Team at Engagement@waternsw.com.au or call 1300 662 077.