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

Casal2 is an advanced software package developed by NIWA for modelling the population dynamics of marine species.

A glossary of common climate change and meteorological terms.

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

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.

NIWA provides national capabilities in Water Quality Monitoring.

View annual, seasonal and monthly summaries of temperature, rainfall and sunshine data from across New Zealand.

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

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

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.