This weekly update helps assess likelihood of extremely dry weather preceding a drought.

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

Floods are not unusual in New Zealand, but those that hit us early this winter broke records. Why did they occur? Should we expect more? Can we predict future floods?

What are the sources of chemical contamination from wood processing?

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

A monthly summary of the climate in the tropical South Pacific islands, with an outlook for the coming months.

NIWA's educational resources and scientific data are tools for young people to learn about science.

When fresh water meets salty water - a classroom exercise that explores the physics of estuaries.

In comparison with regions exposed to the west, Gisborne experiences a greater number of weather and climatic extremes.

NIWA provides ambient air quality monitoring services using low-cost ODIN (Outdoor Dust Information Node) sensors.

Dog Island levels