How do hydro-electricity activities potentially influence waterway temperatures?

El Niño accounts for less than 25 percent of the year-to year variance in seasonal rainfall and temperature at most locations in New Zealand.

Find out how you can have access to Earth Science NZ's research vessels to carry out marine research voyages.

What are the potential sources of chemical contaminants in wastewaters?

The River Environment Classification (REC) is a database of catchment spatial attributes, summarised for every segment in New Zealand's network of rivers.

What are the potential sources of sediments from land use activities?

This Statement of Corporate Intent (SCI) sets out NIWA's strategy for delivering against its core purpose over the next five years.

Tuna, or freshwater eels, are the most widespread freshwater fish in New Zealand. This 'living' educational resource summarises a large amount of scientific and technical literature.

Whitianga Wharf sea levels