Dataset available for download

New Zealand rushes (Juncus): species-level factsheets.

What are the sources of chemical contamination from wood processing?

NIWA has developed a powerful software tool for the analysis of water quality data.

A collection of ID guides to algae. Groups include major freshwater algal groups, diatoms and blue-green (cyanobacteria), red and green algae.

The topography of the North Island has a profound effect on the weather of the Bay of Plenty region.

NIWA develops and supplies custom software for environmental analysis and modelling.

This is a sub-tropical climate zone, with warm humid summers and mild winters.

NIWA's Hydro Web Portal provides river flow and water quality monitoring data from NIWA’s Benchmark river monitoring network.

Maps of average annual rainfall, temperature and other climate variables have been produced for all of New Zealand, based on the period 1981–2010.

Find out more about working at NIWA