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

  • White sharks

    Research Project
    Where and when do white sharks occur in New Zealand waters, and how can fisheries bycatch be reduced?
  • Carbon dioxide

    Facility
    Atmospheric carbon dioxide (CO2) is measured continuously at Baring Head, providing the longest running record of this type in the Southern hemisphere.
  • 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.
  • 2012-2013 Drought

    The 2012-2013 drought affected the entire North Island plus the west coast of the South Island.
  • Loss of riparian vegetation

    Plants and trees along the water margins and banks are called riparian vegetation.
  • Guidelines for sampling freshwater fisheries

    We have prepared a breakdown of the different guidelines that are available for sampling freshwater fisheries. The overview provides links to key documents that explain what should be considered when designing fish monitoring studies and how to implement the various sampling techniques.
  • Hydro

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

    An interactive guide to the sponges of New Zealand.
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    Mean daily maximum temperatures (°C)

    These datasets are available in a range of formats.
  • Air quality monitoring with low-cost sensors

    Service
    NIWA provides ambient air quality monitoring services using low-cost ODIN (Outdoor Dust Information Node) sensors.
  • UV Index at Leigh - 16 October 2023

    Yesterday's UV Index

    Plots of UV levels throughout the day at different locations.