Atmospheric analysis

NIWA's Hydro Web Portal provides river flow and water quality monitoring data from NIWA’s Benchmark river monitoring network.

How does urbanisation increase sediments in waterways?

A high proportion of New Zealand’s native freshwater fish fauna need to migrate to and from the sea.

We provide an overview of New Zealand climate data for use in school projects.

The River Environment Classification (REC) is a database of catchment spatial attributes, summarised for every segment in New Zealand's network of rivers.

This is the standard precision instrument NIWA uses throughout New Zealand in the National Climate Network, and elsewhere, for rainfall measurement.

All species of freshwater tuna spawn at sea, although the spawning grounds of only four species are known with certainty worldwide.

We have an exciting range of career opportunities at NIWA in both the scientific and professional support areas.

Find out more about emergent aquatic plants.

In this activity you will analyse the Southern Oscillation Index and investigate the chances of getting below normal, normal or above normal summer temperatures in Invercargill.