Atmospheric analysis

Each waterway has its own particular characteristics relating to water flow, velocity, and quantity.

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

How do nutrients from wastewater treatment enter waterways?

There are two species of kōura or freshwater crayfish in Aotearoa.

The climate of this zone is largely dependent on the lie of the Southern Alps to the west, but many areas are also sheltered by high country to the south and east.

Waterways can easily become contaminated by pathogens when effluent is discharged nearby.

A versatile inshore vessel, RV Ikatere is equipped with high-precision multibeam and sub-bottom profiler transducers for surveying and mapping the seabed.

Due to its position in the 'Roaring Forties', a belt of strong winds in the Southern Hemisphere which generally occur between the latitudes of 40 and 49 degrees, as well as its small size, New Zealand is a windy country.

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

These datasets are available in a range of formats.

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.

To get the most benefit from a fish stock in the long term, we need to maximise our yield without damaging the fish population we rely on.