Estuaries are at the bottom of the freshwater drainage network and, effectively, are a part of it.

There are two species of kōura or freshwater crayfish in Aotearoa.

Some commonly-asked questions about tornadoes in New Zealand.

Waterways can easily become contaminated by pathogens when effluent is discharged nearby.

The Statement of Core Purpose spells out why the Government owns Crown Research Institutes and what it expects from them.

NIWA develops and supplies custom software for environmental analysis and modelling.

This is a sub-tropical climate zone, with warm humid summers and mild winters.

A monthly summary of the climate in the tropical South Pacific islands, with an outlook for the coming months.

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

In comparison to the vast span of geological time, the estuaries that we see today are very recent coastal features.

How may agricultural activities impact riparian vegetation around a waterway?