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

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

Common questions about storms and cyclones in New Zealand.

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.

If you're moving to join us here at NIWA, we want to say thanks for choosing us by helping you with your big move.

One of the major consequences of climate change is rising global sea levels.

Land is tilled, sowed, and harvested for horticultural crops to grow.

Diverting water changes a waterways natural flow