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

  • Compound Specific Isotope Analysis (CSIA)

    Compound specific stable isotope analysis techniques are an increasingly useful tool to address many ecological and environmental research questions.
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    Tuna - solutions: upstream passage for elvers at large barriers

    The need to provide upstream passage facilities for ensuring the long term sustainability of migratory freshwater fish populations is now well recognised.
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    Stormwater - an introduction

    Stormwater poses risks to NZ’s urban streams & coastal waters, affecting ecological health & the cultural, social, & economic value of these environments.
  • Instream barriers and altered water flow

    Instream barriers and diversions alter the natural flow of rivers, streams, and lakes.
  • Dry stock farming activities

    Dry stock farms can cover large areas of hill-country grassland that may be steep and prone to erosion.
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    Graphing with Microsoft Excel

    How do I create a graph?
    Using Microsoft® Excel is easy because the Chart Wizard does all the work for you!
    Simply enter the data for your data table.
    Highlight the cells you want to graph.
    Click on the Chart Wizard icon on the Tool Bar.
    Select the chart type you want to use and click Next.
    Click Next to confirm the range of cells.
    Give your graph a title, label x- and y-axis and click Next.
    Click on the gridlines tab to remove or add gridlines.
    Click Finish and graph is complete!
    Help, my graph is too small!
    When the chart wizard creates your graph it will probably be too smal
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    NIWA staff profile: Nava Fedaeff

    Feature story
    At the age of seven, NIWA’s youngest climate scientist, Nava Fedaeff, swapped sub-arctic Siberia for balmy Auckland – and her first job was to learn to swim.
  • UV Index at Leigh - 17 October 2023

    Today's UV Index

    Today's UV Index
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    Kōaro

    Kōaro are excellent climbers and like clear, swiftly flowing, forested streams.
  • Working with schools

    We sponsor regional science and technology fairs around New Zealand and support learning programmes that bring science into the classroom.
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    Mean monthly wet-days

    These datasets are available in a range of formats.