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

  • Pulp and paper

    Wood chips and plant material make pulp that is used to produce paper products.
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    Sediment and agriculture

    How may agricultural activities increase sediments in waterways?
  • Carbon dioxide

    Facility
    Atmospheric carbon dioxide (CO2) is measured continuously at Baring Head, providing the longest running record of this type in the Southern hemisphere.
  • Blue Lake, St Bathans

    Seasonal

    Publication series
    Seasonal climate summaries from summer 2001 to the present.
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  • What is Kaitiaki Tools?

    Kaitiaki Tools is a guide to teach people (especially hapū and iwi groups) who manage the resource consent process.
  • Mining

    Mining is the extraction of metal and mineral resources, such as gold, coal, petroleum, and ironsand
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    Mean daily minimum temperatures (°C)

    These datasets are available in a range of formats.
  • 2012-2013 Drought

    The 2012-2013 drought affected the entire North Island plus the west coast of the South Island.
  • Guidelines for sampling freshwater fisheries

    We have prepared a breakdown of the different guidelines that are available for sampling freshwater fisheries. The overview provides links to key documents that explain what should be considered when designing fish monitoring studies and how to implement the various sampling techniques.