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Kōura
There are two species of kōura or freshwater crayfish in Aotearoa. -
Chemical contamination and aquaculture
What are the potential sources of chemical contamination from aquaculture activities? -
Nature knows best?
Feature story06 June 2017Returning water to our waterways after we’ve used it in our homes, on farms and in industry is a complex and challenging process. -
Mitigation and best practice options
Here are some simple steps to minimise the effects of dairying on water quality and mahinga kai. -
The impact of El Niño and La Niña on New Zealand's climate
El Niño accounts for less than 25 percent of the year-to year variance in seasonal rainfall and temperature at most locations in New Zealand, however its effects can be significant. -
Chemical contamination and mining
What are the potential sources of chemical contamination from mining activities? -
Ecotoxicology services
ServiceNIWA offers a range of standard toxicity tests for both freshwater and marine environments. -
Wastewater Treatment
Wastewater treatment is the separation and extraction of solid waste from liquid waste, and the removal of nutrients and pathogens. -
NZ Freshwater Fish Database Help
Learn how to use the New Zealand Freshwater Fish Database (NZFFD) -
Dissolved oxygen
Dissolved oxygen (DO) is a relative measure of the amount of oxygen (O2) dissolved in water. -
Riparian vegetation and agriculture
How may agricultural activities impact riparian vegetation around a waterway?