Atmospheric analysis

NIWA discusses, in depth, this year's most asked question—what is happening to our fresh waterways?

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

Because of its exposure to disturbed weather systems from the Tasman Sea, this climate zone is often quite windy, but has few climate extremes.

More information about our online freshwater databases.

Floods are not unusual in New Zealand, but those that hit us early this winter broke records. Why did they occur? Should we expect more? Can we predict future floods?

Understanding what happens above and below ground during a flooding event, and how it is different from normal rainfall conditions

Understanding how hazards impact people and the environment provides the foundation for informed decision making for a resilient Pacific.

Here are some simple steps to minimise the effects of dairying on water quality and mahinga kai.

Urbanisation has changed the face of many waterways that flow through urban areas

A glossary of common climate change and meteorological terms.

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