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

  • Chemical contamination and mining

    What are the potential sources of chemical contamination from mining activities?
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    Impacts of water dams

    What are the impacts of water dams on water quality and mahinga kai?
  • 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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    Mountains in the Sea: the Louisville Seamount Chain

    We are currently steaming out towards our survey area, the Louisville Seamount Chain, which is about 1500 km from Wellington.
  • Manawatu-Wanganui

    The climate of the Manawatu-Wanganui region is a reflection of the generally disturbed westerly air flow with interspersed anticyclones, modified in specific places by the local topography.
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    Resources

    Understanding climate and climate change.
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    Mitigation and best practice options

    Some simple steps to minimise the effects of wastewater on water quality and mahinga kai.
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    Tuna - freshwater eels in New Zealand

    Tuna is a generic Māori word for freshwater eels. The word will be used interchangeably in this resource.
  • Common hydrological terms

    Education Resource
    Descriptions of the common terms that explain the processes that occur in hydrology.
  • Biogas from pig farms

    Research Project
    Biogas from pig farms