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
- Offices
- Client
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- Barrhill Chertsey Irrigation Co.
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.
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.
Grant Gillespie, Water Resources Director, Asia Pacific
I’m driven by seeing projects go from concept to a completed piece of infrastructure. Put simply, my reward is seeing ideas get built.
Kirstie Thorpe, Senior Principal Landscape Architect/Urban Design
I weave threads of landscape together and incorporate their values into infrastructure projects.
Janan Dunning, Group Leader, Planning
There are many moving parts to much of what we do as planners, and I enjoy the unpredictability of each day.
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