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.

Links to related resources and websites

Find out more about free floating species.

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.

The world’s oceans are acidifying as a result of the carbon dioxide (CO2) generated by humanity.

How can we help you?

Downloadable and printable guides on identification of common freshwater invertebrates found in New Zealand waterways and lakes.

NIWA is doing a nationwide study to discover what makes the best riparian projects. Help us give you the knowledge to make the best riparian management decisions possible by taking our 5 minute survey.

The scientific records of palaeotsunamis to have affected New Zealand shores can now be accessed in a new one-stop information shop.