Skip to main content
Start of main content

Clyde and Roxburgh Dam Safety Services

Assisting our clients with dam safety management to comply with consenting and dam safety requirements

  • 743MW

    Combined Generation

  • 35

    Year Resource Consent

  • 2


  • Central Otago, New Zealand

    Central Otago, New Zealand

Undertaking dam safety services to support safe water energy infrastructure

Sitting on the Clutha River and creating Lake Dunstan in Central Otago, the Clyde Dam is the largest concrete gravity dam in New Zealand. It can produce 432 MW of renewable hydropower. Lying across the Clutha River downstream, the Roxburgh Dam was constructed in the 1950s and has a generation capacity of 320 MW. As civil dam safety advisors, we’ve provided various dam safety support on these dams for our client, Contact Energy, for over a decade.

Because both dams have a high potential impact classification (PIC)—a system of classifying dams according to the incremental consequences of dam failure, so that appropriate dam safety criteria can be applied—our services have included intermediate dam safety reviews (IDSR). These reviews include detailed inspections, analyzing surveillance data, and undertaking reporting aspects across dam safety management activities. Acting as a technical witness, we’ve supported our client’s resource consent application to operate their dams and reservoirs for another 35 years. We’ve also assisted with evidence when appeals were heard in the Environment Court.

Our support of Contact Energy’s dam safety management has helped them comply with resource consents—to meet the recommended dam safety guidelines outlined by the New Zealand Society on Large Dams and operate safe and efficient energy infrastructure.

At a Glance

  • Contact Energy
Meet Our Team

Nathan Fletcher, Practice Lead Dams & Dam Safety/Senior Principal Water Engineer

I work with clients to help with their dam safety issues—contributing towards protecting them and downstream communities.
Nathan Fletcher Practice Lead Dams & Dam Safety/Senior Principal Water Engineer Read More

Nathan Fletcher

Practice Lead Dams & Dam Safety/Senior Principal Water Engineer

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.

End of main content
To top