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Barrhill Chertsey Irrigation Scheme - Stage 2

Providing essential and affordable water to farmers in Canterbury

  • 7KM


  • 500KW

    Hydro generation

  • 100K

    Pond capacity cubic metres

  • Canterbury, New Zealand

    Canterbury, New Zealand

Developing irrigation schemes to encourage economic development

Having reliable water for farmers to irrigate their land is vital to their success. The Barrhill Chertsey irrigation and hydropower project provided just that.

Barrhill Chertsey Irrigation Company commissioned our team to provide full design services for the new intake, settling pond, fish screen, water pipeline and hydro scheme. We investigated the river process, erosion and flood risk, water reliability, and ran geotechnical and dam breach analyses. We assisted further with dam safety requirements, pipeline surge analysis, thrust restraint and backfill requirements as well as resource consent and tender documentation. We also provided supervision of all key construction.

We proposed using glass reinforced plastic pipes, which had previously not been used widely in New Zealand, and leveraged our experience in the small hydro sector to develop a scheme with a crossflow turbine that operated over a wide range of heads and flows. An added project bonus is the energy recovery turbine that generates renewable power for the wider community.

The result of our work? Affordable water for the farming community and production of free energy back to the network for the wider region.

At a Glance

  • Barrhill Chertsey Irrigation Co.
Meet Our Team

Andrew Bird, Senior Hydropower Engineer, Asia Pacific Dams and Hydro Sector Leader

I love working proactively to solve problems with our clients and I am a firm believer in a best-for-project approach over the interests of companies or individuals.
Andrew Bird Senior Hydropower Engineer, Asia Pacific Dams and Hydro Sector Leader Read More

Tom Kirk, Principal Hydro Mechanical Engineer

We will continue to advance the hydropower industry by truly understanding our clients’ needs while performing expanded, value-added services.
Tom Kirk Principal Hydro Mechanical Engineer Read More

Kieron Thorpe, Senior Engineer, Water & Wastewater

Before looking for an answer, be sure of the question. I try to understand every facet of my client’s need before I start working to meet it.
Kieron Thorpe Senior Engineer, Water & Wastewater Read More

Andrew Bird

Senior Hydropower Engineer, Asia Pacific Dams and Hydro Sector Leader

Tom Kirk

Principal Hydro Mechanical Engineer

Kieron Thorpe

Senior Engineer, Water & Wastewater

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