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AUNZ

Service

Hydrogeology & Groundwater

Hydrogeological investigation, aquifer modelling and groundwater management, including managed aquifer recharge and resource consenting.

Scientist in a WGA vest filling a groundwater sample bottle beside a shallow drain during monitoring for a New Zealand council

Experience

Our experience

Our hydrogeology specialists bring established field methodology together with modern modelling tools to answer water resource questions at a catchment and project scale. We work on stream-aquifer interaction, recharge quantification, aquifer characterisation and groundwater modelling, and we use GIS and database platforms to manage and present data in ways that consenting authorities and asset owners can use.

Managed aquifer recharge

Managed aquifer recharge (MAR) and aquifer storage and recovery (ASR) are areas we have invested in heavily over the last fifteen to twenty years, and we have contributed to a large number of major MAR developments across our project portfolio. That depth of experience carries through into how we scope feasibility, monitoring and consenting work today.

Capability areas

We offer a rounded hydrogeology service so clients can come to us for a single piece of the puzzle or the full workflow.

Numerical groundwater modelling

Feasibility studies and options assessments

Regulatory approvals and consenting support

Monitoring programmes and data review

Managed aquifer recharge and aquifer storage and recovery

Bore design and water supply development

Water resource planning

Aquifer testing and analysis

Integrated catchment management

Groundwater experience

Our groundwater work covers a broad technical range, from numerical modelling of aquifers through to the testing of individual wells for consent applications. We support government, private and industry clients through the increasingly complex task of managing groundwater resources under climate and allocation pressures, and we ground our advice in field data rather than desktop assumption.

Groundwater capability areas

We offer a rounded groundwater service so clients can draw on a single piece of the workflow or the full stack.

Numerical aquifer modelling

Well and bore testing

Water take consent applications and compliance monitoring

Groundwater quality assessment

Stream depletion and surface-groundwater interaction studies

Resource allocation advice and expert evidence

Consenting and hearings

A large share of our groundwater work is consenting-related, and we are regularly engaged to provide expert evidence for resource consent hearings. Our hydrogeologists present technical findings clearly and defensibly, whether the forum is a council hearing, an Environment Court appeal or a collaborative planning process.

Managed Aquifer Recharge experience

Over the past thirty years our water team has consented and installed more than 75 groundwater replenishment schemes using managed aquifer recharge (MAR) internationally, and we carry that depth of experience directly into our New Zealand work. We treat MAR as a practical tool for responding to climate-driven pressure on groundwater, rather than as an experimental technology.

New Zealand track record

Our New Zealand presence is substantial and still growing.

More than 18 designed and consented MAR sites in New Zealand

Led development of New Zealand's first Aquifer Storage Transfer and Recovery bore in Gisborne

Numerical modelling capability across Australasia

In-house hydrogeology, geochemistry, civil engineering and community engagement

Working relationships with specialists in planning, freshwater ecology and wetland design

Why managed aquifer recharge matters

Replenishing groundwater storage is one of the clearest practical tools available for responding to climate change impacts on water resources. MAR lets regions use surplus flow when it is available to rebuild aquifer storage for use when it isn't, and done well it also supports stream base flows and dependent ecosystems.

Integrated Catchment Management experience

Managing water at scale needs a systems view rather than a project-by-project one. Our team assesses groundwater and surface water interactions for resource management, and we build numerical modelling tools that feed directly into the policies, rules and strategies that sit above New Zealand's water management system.

Integrated Catchment Management capability areas

We work across the full integrated catchment and water management (ICWM) workflow, from technical investigation through to strategy.

Groundwater and surface water interaction assessment

Numerical model development for catchment-scale questions

Water quality and allocation policy support

Regional and unitary plan inputs

Strategy and rule development

Stakeholder and iwi engagement support

Working collaboratively

The most durable water management outcomes we have seen come from collaborative processes with councils, iwi, industry and community groups. We work to that model, delivering technical inputs that are accessible enough for non-technical participants to engage with while remaining defensible at a science-panel level.

Talk to our hydrogeology & groundwater team

Let's talk about your project

Tell us what you're working on and our team will be in touch promptly.

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