River floods occur when water spills from a river channel onto land that is normally dry, and are one of New Zealand's costliest natural hazards.

A glossary of common climate change and meteorological terms.

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

The main characteristic of the Marlborough climate is its dryness. Summer droughts are frequent, and the region is often swept by warm, dry northwesterlies.

NIWA collects a vast range of environmental information about New Zealand’s environment from the sky to the seafloor.

Wood chips and plant material make pulp that is used to produce paper products.

Tuna are found in all sorts of habitats (places), including coastal estuaries, lakes, wetlands, rivers, mountain streams and even alpine tarns.

The current method for calculating wind speed-up is inadequate, and can grossly under-predict correct design wind speeds in NZ's complex terrain.

Easing the resource consent process

In Kaitiaki Tools the term mahinga kai generally refers to indigenous freshwater species that have traditionally been used as food, tools, or other resources.