Atmospheric analysis

NIWA has transformed 1.5 million square kilometres of data into the most accurate and detailed map yet of the land underneath the sea around New Zealand.

An overview of what the SHMAK kit comprises, and various uses for it.

Find out more about submerged aquatic plant species.

Instrument Systems is a specialised technology-focused consulting group within NIWA.

Glass eels (about 5.5 to 7.0 cm) arrive in fresh water during spring, especially during September and October, although they may be present from July to December.

Charts of coastal bathymetry, sediment, and other information are available for purchase.

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

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

Whitebait are the juveniles of five species of galaxiidae, a family of fish confined to the Southern Hemisphere.

Chemical contaminants are chemicals toxic to plants and animals in waterways.