On 1 July 2025, NIWA merged with GNS Science to become Earth Sciences New Zealand.

Atmospheric analysis

NIWA has been using advanced scientific instruments to measure atmospheric trace gases and isotopes for over 50 years.

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    Taonga species

    Te Kūwaha, NIWA’s Māori Environmental Research team, partners with whānau, hapū and iwi to co-develop methods for the protection, restoration and economic development of taonga species.
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    Freshwater restoration

    NIWA measurement, research and tools support strategies being used to reverse the degradation of freshwaters and restore ecosystems throughout New Zealand.
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    Freshwater quality

    NIWA provides measurement, knowledge and tools to the managers of New Zealand's stream, river, lake and groundwater quality.
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    Freshwater invertebrates

    NIWA research into freshwater invertebrates supports a greater understand of the role of these varied aquatic species in habitat and ecosystem health.
  • Freshwater fish

    NIWA research and tools support the protection, restoration and management of New Zealand’s freshwater fish species and the habitats that sustain them.
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    Ecotoxicology

    NIWA offers a range of standard toxicity tests for both freshwater and marine environments and is at the cutting edge of toxicity-related research.
  • Ecological monitoring

    Monitoring the health of freshwater lakes and streams.
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    Estuaries

    NIWA research and tools support the protection, restoration and management of coastal estuarine environments where seawater mixes with freshwater.
  • Weather forecasting

    NIWA's forecasting services are underpinned by experienced meteorologists and in-house proprietary modelling.
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    Climate modelling and projections

    Climate modelling and projections will support Aotearoa’s transition to a low-emissions, climate-resilient economy.
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    Climate data

    NIWA maintains the national climate database for New Zealand, and can supply climate data in a variety of ways.
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    Climate change adaptation

    There are many options available to you, your whānau, community and business to adapt to the challenges of our changing climate.