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

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

Forest plantations in Aotearoa can be found on flat, gently rolling, or very steep terrain.

NIWA expends considerable effort on determining the age of commercial fish species. But why age a fish? And how do we do it?

A basket star was the first reported animal trawled up from the deep sea back in the early 1800s so they have a spot in the history books of deep ocean exploration.

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

Short-term to long-term data estimation

The High Performance Computing Facility (HPCF) is supercharging New Zealand science.

These datasets are available in a range of formats.

A list all of New Zealand's freshwater fish species.

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

West Coast is New Zealand’s wettest region, and this may be attributed to its exposure to the predominant westerly airflow over the country, combined with the orographic effect of the Southern Alps.