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

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    Urbanisation activities

    Urbanisation has changed the face of many waterways that flow through urban areas
  • Common climate and weather terms

    Education Resource
    A glossary of common climate change and meteorological terms.
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    Water Level Instruments

    There are different types of instrument available for measuring water level.
  • Determining the age of fish

    Research Project
    NIWA expends considerable effort on determining the age of commercial fish species. But why age a fish? And how do we do it?
  • Lake Castalia on the upper reaches of the Wilkin River North Branch near Wanaka. Image is looking southwest back down the valley.

    Environmental monitoring

    NIWA collects a vast range of environmental information about New Zealand’s environment from the sky to the seafloor.
  • Pulp and paper

    Wood chips and plant material make pulp that is used to produce paper products.
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    Electric Fishing Machine - NIWA EFM300

  • Freshwater fish species list

    A list all of New Zealand's freshwater fish species.
  • West Coast

    West Coast is New Zealand’s wettest region, and this may be attributed to its exposure to the predominant westerly airflow over the country, combined with the orographic effect of the Southern Alps.
  • Kaitiaki Tools

    Service
    Easing the resource consent process
  • Mahinga kai - what species interests you?

    In Kaitiaki Tools the term mahinga kai generally refers to indigenous freshwater species that have traditionally been used as food, tools, or other resources.
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    Meteorologist for a day

    Within a range of meaningful contexts students will be able to make statements about implications and possible actions consistent with the results of a statistical investigation and to find and authenticate data measures such as mean, median, mode, inter-quartile range, and range.