Atmospheric analysis

Floods are not unusual in New Zealand, but those that hit us early this winter broke records. Why did they occur? Should we expect more? Can we predict future floods?

Descriptions of the common terms that explain the processes that occur in hydrology.

What are the potential sources of chemical contamination from agricultural activities?

NIWA's goal is to provide the science to help New Zealanders transition to a sustainable future.

The majority of New Zealanders are able to recall a story about catching eels when they were children.

Dairy farms operate to maximise milk production

More information about our online freshwater databases.

How can mining activities influence sediments in waterways?

View data that show reported target catch and estimated bycatch.

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

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.