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

  • Resources for teachers

    NIWA's educational resources and scientific data are tools for young people to learn about science.
  • When fresh water meets salty water

    When fresh water meets salty water - a classroom exercise that explores the physics of estuaries.
  • El Niño maps and charts

    View a collection of maps showing the impact of past El Niño and La Niña events.
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    Dog Island

    Dog Island levels
  • White sharks

    Research Project
    Where and when do white sharks occur in New Zealand waters, and how can fisheries bycatch be reduced?
  • What is the proposed activity or industry?

    Various industries and land use activities have the potential to impact on water quality and mahinga kai unless properly managed.
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    Bay of Plenty

  • Our work

    We have an exciting range of career opportunities at NIWA in both the scientific and professional support areas.
  • Loss of riparian vegetation

    Plants and trees along the water margins and banks are called riparian vegetation.
  • Hydro

    Hydro-electricity is a renewable energy source that relies on the inflow of water into storage lakes upstream of a dam.
  • Drought indicator charts

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    Summer Series 10: Super snapper! Delicious!

    News article