Atmospheric analysis

A glossary of common climate change and meteorological terms.

There are different types of instrument available for measuring water level.

NIWA provides national capabilities in Water Quality Monitoring.

The majority of New Zealanders are able to recall a story about catching eels when they were children.

More information about our online freshwater databases.

Last Updated: July 2025

Impacts of mining on water quality and mahinga kai.

NIWA has working relationships with hundreds of organisations in New Zealand and overseas.

These datasets are available in a range of formats.

A hot and steamy summer saw Kiwis heading down to rivers and lakes to cool off. But they weren’t the only ones enjoying the warmer weather – algae had a great time too.

Our southwest Pacific research focuses on recent and historic climate and weather activity, including our involvement in ACRE Pacific data rescue.