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

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    Snapper: Egg

    About snapper eggs
  • Generating synthetic wind data

    Research Project
    NIWA has recently created synthetic, multi-year, 10-minute wind datasets at 15 wind farm sites across New Zealand. These will be used by the Electricity Commission to model the impact of wind farms on the national grid.
  • Dry stock

    Dry stock farming consists predominantly of pasture grazing beef cattle, sheep, and deer for meat, wool, and velvet production.
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    Tuna - tuna heke (downstream migrants)

    Once eels become migrants (also known as tuna heke or tuna whakaheke) they stop feeding, and progressively develop the external features that clearly distinguish them from 'feeders'.
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    West Coast

  • Lauder Atmospheric Research Station

    UVI forecast for Specific Sites

    Check out UV index forecasts for locations in New Zealand (including ski fields), Australia, the Pacific and Antarctica.
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    Riparian management classification

    Management of stream riparian areas - including vegetation and stock access - influences the health of streams and downstream water bodies.
  • NZ temperature record

    Research Project
    There are many lines of evidence showing that NZ has warmed during the past century.
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    Kanae

    Grey mullet have a worldwide distribution and Aotearoa is at the southern limit of their range.
  • Nutrient overloading

    Nutrients in waterways are essential for the growth of algae and aquatic plants but too much can destroy an ecosystem.
  • Nutrients and wastewater

    How do nutrients from wastewater treatment enter waterways?
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    Tau kōura sample collection and processing protocol

    Tau kōura is a traditional Māori fishing method commonly used to harvest kōura or freshwater crayfish in areas where they are abundant.