Atmospheric analysis

NIWA collects and manages significant amounts of New Zealand's environmental data, particularly in the climate, freshwater, marine and atmosphere domains.

Heavy rainfall is one of the most frequent and widespread severe weather hazards to affect New Zealand.

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

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

How do agricultural activities potentially influence water flows?

Defining drought and identifying its causes and impacts on humans.

This calculator estimates the solar energy that can be collected by a solar capture device (solar panel) at a given address, panel direction and roof slope.

Seasonal climate summaries from summer 2001 to the present.

Commercial eel fishery in New Zealand began in earnest in the 1960s and expanded rapidly until the early 1970s

Antarctica is experiencing stunning skyscapes like those recently seen in New Zealand, thanks to the afterglow effect from the Tongan volcano.

Banded kōkopu juveniles are very good climbers and will try to escape from buckets by clinging to and wriggling up the sides.