Atmospheric analysis

What are the potential sources of sediments from land use activities?

Defining drought and identifying its causes and impacts on humans.

The need to provide upstream passage facilities for ensuring the long term sustainability of migratory freshwater fish populations is now well recognised.

This calculator estimates the solar energy that can be collected by a solar capture device (solar panel) at a given address, panel direction and roof slope.

Some simple steps to minimise the effects of aquaculture activities on water quality and mahinga kai.

Identifying biological factors that may be limiting fish numbers requires sampling to ensure that key invertebrate prey species are not scarce and that pest fish, especially predators, are not abundant.

Hydrocarbons, although requiring increasingly responsible use, are still an essential part of our modern economy. NIWA has provided survey and consultancy services related to the exploration of offshore mineral resources for thirty years.

The condition of many NZ lakes is under threat from land-use changes and the invasion of alien aquatic plants.

NIWA discusses, in depth, this year's most asked question—what is happening to our fresh waterways?

Read about how NIWA can map any aspect of climate to help guide your organisation's response to a changing and variable climate.

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

Smelt have a distinctly forked tail and a strong cucumber smell.