About this Episode:

In this episode of Infrastructure Matters, we’re joined by Peter Christensen and Midhun Joseph from Christchurch City Council to explore an award-winning green infrastructure project that combines flood protection, water quality improvement, ecological restoration and community value.

Peter and Midhun unpack how the project was developed to respond to flood risk in southwest Christchurch while also delivering broader outcomes including cultural recognition, biodiversity, recreation and active transport connections. They discuss the role of Māori knowledge in shaping the project, the importance of interdisciplinary collaboration, and how the design evolved to respond to changing site conditions over time.

Key Takeaways:

• Long-term maintenance considerations for hybrid stormwater and ecological assets
• Integrating cultural values and Māori knowledge into infrastructure planning
• Designing wetlands and basins to function individually and collectively during storm events
• Managing collaboration across engineers, ecologists, landscape architects, archaeologists, and other specialists

About Peter Christensen:

Peter is a Chartered Professional Engineer with over 25 years’ experience in water resources engineering. He has specialist knowledge in stormwater and flood management. Peter’s project experience has included flood hazard analysis, hydrological and hydraulic modelling and analysis, catchment plans and stormwater treatment. He is a passionate advocate for blue-green place-making where water, nature and people meet.

About Midhun Joseph:

Midhun is a Senior Project Manager at Christchurch City Council with experience delivering stormwater infrastructure projects, including the Te Kuru project. Midhun played a key role in overseeing Te Kuru project delivery through construction, asset handover, and working closely with contractors, engineers, operations teams, and internal & external stakeholders.

About Christchurch City Council :

Christchurch City Council, is the local government authority responsible for delivering essential services and infrastructure to the residents of Christchurch, New Zealand. The Council manages a wide range of functions including water supply, wastewater and stormwater systems, transport networks, parks and public spaces, and community facilities. With a strong focus on sustainable development and community wellbeing, the Council plays a key role in planning, maintaining, and improving the city’s infrastructure. It works closely with stakeholders to support resilient growth, environmental stewardship, and the long term liveability of Christchurch.