Atmospheric analysis

Management of stream riparian areas - including vegetation and stock access - influences the health of streams and downstream water bodies.

Charts of coastal bathymetry, sediment, and other information are available for purchase.

There are many lines of evidence showing that NZ has warmed during the past century.

Grey mullet have a worldwide distribution and Aotearoa is at the southern limit of their range.

Nutrients in waterways are essential for the growth of algae and aquatic plants but too much can destroy an ecosystem.

NIWA has transformed 1.5 million square kilometres of data into the most accurate and detailed map yet of the land underneath the sea around New Zealand.

Tau kōura is a traditional Māori fishing method commonly used to harvest kōura or freshwater crayfish in areas where they are abundant.

Providing educational resources to school students and teachers is part of NIWA's commitment to helping young New Zealanders discover more about science and technology.

The climate of this zone is greatly dependent on the lie of the massive Southern Alps to the west.

Heavy rainfall is one of the most frequent and widespread severe weather hazards to affect New Zealand.

NIWA's seafood sector work comprises our fish, fisheries and aquaculture research and consultancy.

Information about past climate is obtained from piecing evidence together from various sources.