Atmospheric analysis

There are two methods to determine visual clarity in SHMAK; the clarity tube (or SHMAK tube) and the black disc method.

As this region is sheltered by high country to the south and east, it has less wind than many other parts of New Zealand.

NIWA has developed a real time UV display in consultation with the Cancer Society and Sunsmart.

If you're collecting sea shells at the beach this summer and wondering what they are, NIWA is here to help.

Seasonal climate summaries from summer 2001 to the present.

The 2012-2013 drought affected the entire North Island plus the west coast of the South Island.

Find out more about emergent aquatic plants.

We have prepared a breakdown of the different guidelines that are available for sampling freshwater fisheries. The overview provides links to key documents that explain what should be considered when designing fish monitoring studies and how to implement the various sampling techniques.

An interactive guide to the sponges of New Zealand.

Commercial eel fishery in New Zealand began in earnest in the 1960s and expanded rapidly until the early 1970s