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.

  • Education and information

    Education Resource
    Explore our education and information section to find out about climate and climate change, weather, our atmosphere, estuaries and more.
  • Products

    Service
    Here is our complete range of products.
  • Freshwater monitoring and reporting

    Research Project
    NIWA's research on freshwater monitoring and reporting is one of three research areas within the 'Values, Monitoring and Outcomes' (VMO) programme led by Landcare Research.
  • Daily climate maps

    These climate maps are updated daily and are based on data from our National Climate Database.
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    Causes of sedimentation

    What are the potential sources of sediments from land use activities?
  • Chemical contamination and wood processing

    What are the sources of chemical contamination from wood processing?
  • Loss of riparian vegetation

    Plants and trees along the water margins and banks are called riparian vegetation.
  • Front and rear views of a Mark I dosimeter badge. [NIWA]

    Personal UV Dosimeters

    NIWA has developed personal UV dosimeter badges to support studies relating UV exposure to human health.
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    NIWA Hydro Web Portal

    NIWA's Hydro Web Portal provides river flow and water quality monitoring data from NIWA’s Benchmark river monitoring network.
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    Piharau

    Piharau/kanakana are an important mahinga kai species and a prized delicacy for many Māori.
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    Algae ID guides

    A collection of ID guides to algae. Groups include major freshwater algal groups, diatoms and blue-green (cyanobacteria), red and green algae.