Warragamba Dam Raising

Detailed Planning
Warragamba Dam Raising

The Warragamba Dam Raising project will see the existing dam raised by 14 metres with the aim of reducing flooding risk from the Warragamba River catchment.

Key Dates

2024 Expected Construction Completion


May 2017 The NSW Government released the Hawkesbury-Nepean Flood Risk Management Strategy, which recommended raising the Warragamba Dam by approximately 14 metres.
2017 The project was included under the broader Hawkesbury-Nepean Valley flood management initiative, which Infrastructure Australia identified as a Priority Initiative on its Infrastructure Priority List.
Mar 2018 The Secretary’s Environmental Assessment Requirements (SEARs), which will inform the preparation of the Environmental Impact Statement (EIS), were reissued.
Sep 2021 The Environmental Impact Statement (EIS) for the project was released for public consultation, closing on 12 of November.
Oct 2022 The project was declared Critical State Significant Infrastructure.
Oct 2022 WaterNSW has released its Preferred Infrastructure Report and response to Submissions for the Warragamba Dam raising project. The NSW Department of Planning and Environment has placed these documents on public exhibition, closing on 12 December.
Nov 2022 The NSW Department of Planning and Environment has placed WaterNSW's Response to Submissions and Preferred Infrastructure Report for the project on public exhibition, with submissions closing 12 December.
Estimated Total Cost
Water & Sewerage
Procurement approach
Unconfirmed |
New South Wales |
Media releases
Project pages