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

Catchments

NIWA develops the knowledge and tools to inform decision makers about aquatic ecosystems and the impact of human activity in New Zealand’s rivers, estuaries and oceans.

  • Keeping tabs on muddy waters

    Feature story
    Sam Fraser-Baxter heads out with a NIWA research team keeping a close eye on these vulnerable transition zones.
  • The Whatawhata Integrated Catchment Management Project

    Research Project
    The Whatawhata Integrated Catchment Management (ICM) Project is the longest continuously monitored before-after-control-impact (BACI) catchment-scale study in New Zealand.