At a Glance
-
14M
Height Raise
-
75km²
Reservoir Size
-
5M
People Supplied
- Location
- Sydney, New South Wales
- Offices
-
-
Client
-
-
WaterNSW
-
-
Partners
-
-
GHD
-
- Location
- Sydney, New South Wales
- Offices
- Client
-
- WaterNSW
- Partners
-
- GHD
Share
Warragamba Dam Studies and Dam Raising
Sitting 142 metres high (465 feet) by 351 metres (1,151 feet) long, with a central gated spillway section about 90 metres (295 feet) wide, the Warragamba Dam is Sydney’s largest supply of water. It accounts for about 80% of the available water supply for the region.
Since 2018, our team has undertaken various studies to identify options to create a flood mitigation zone. Early studies included gate upgrade options, fault tree and failure mode analysis, and drum seismic assessment. We then explored options for raising the dam by up to 14 metres (46 feet) and investigated alternatives, such as building a new dam. In 2020, after considering all possibilities, we developed the best design raise option and a detailed concept design to support the business case.
Combining local and global water infrastructure and engineering knowledge, we continue to support WaterNSW with work at Warragamba and floodwater reduction measures in the Hawkesbury-Nepean Valley region. Ultimately, we’re working to reduce risk to life, property, and community assets.
At a Glance
-
14M
Height Raise
-
75km²
Reservoir Size
-
5M
People Supplied
- Location
- Sydney, New South Wales
- Offices
-
-
Client
-
-
WaterNSW
-
-
Partners
-
-
GHD
-
- Location
- Sydney, New South Wales
- Offices
- Client
-
- WaterNSW
- Partners
-
- GHD
Share
We’re better together
-
Become a client
Partner with us today to change how tomorrow looks. You’re exactly what’s needed to help us make it happen in your community.
-
Design your career
Work with passionate people who are experts in their field. Our teams love what they do and are driven by how their work makes an impact on the communities they serve.