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

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    Mitigation and best practice options

    Some simple steps to minimise the effects of mining activities on water quality and mahinga kai.
  • Wellington science fair

    Science and Technology Fairs

    NIWA is a major sponsor of the Auckland, Manukau City, North Harbour, Waikato, Wellington, Canterbury and Bay of Plenty – Science & Technology Fairs.
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    Weather plots: temperature and relative humidity

    Objective: to observe the relationship between temperature and relative humidity.
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    Cloud Imagery

    On this page
    NZ Region Cloud Analysis Australasian Region Infrared Hemispheric Infrared NZ High-res Visible Contact
    All transmissions from GMS-5 are no longer received at NIWA’s satellite reception station in Wellington. We are working on an alternative data feed and will be able to bring back these images later this year. Once we start receiving data again, it will then be calibrated, re-mapped onto standard map projections, and archived.
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    Smelt

    Smelt have a distinctly forked tail and a strong cucumber smell.
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    Impacts of water dams

    What are the impacts of water dams on water quality and mahinga kai?
  • Chemical contamination and wood processing

    What are the sources of chemical contamination from wood processing?
  • Multibeam, seabed mapping, swath, Tangaroa

    Multibeam swath system

    Hull-mounted on the RV Tangaroa, the EM302 multibeam echosounder maps the seafloor using a fan of 288 acoustic beams, producing up to 864 soundings per ping in dual swath mode, providing 100% coverage of the seabed.
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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.
  • Bay of Plenty

    The topography of the North Island has a profound effect on the weather of the Bay of Plenty region.
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    Resources

    Understanding climate and climate change.