Atmospheric analysis

Nutrients in waterways are essential for the growth of algae and aquatic plants but too much can destroy an ecosystem.

We sponsor regional science and technology fairs around New Zealand and support learning programmes that bring science into the classroom.

Māori have an extensive knowledge of the ecology of freshwater eels, and have maintained their customary fisheries for several centuries.

Confused about El Niño, or can't tell the difference between an Anticyclone and an Isobar? Let us help.

Understanding climate and climate change.

Temperature trends from 1930s to present day

A list all of New Zealand's freshwater fish species.

This weekly update helps assess likelihood of extremely dry weather preceding a drought. Regions experiencing severely to extremely drier than normal soil conditions are deemed “hotspots”

NIWA offers a range of standard toxicity tests for both freshwater and marine environments.