NIWA has been awarded $10.2m to eradicate an invasive clam that was only recently discovered in New Zealand waters. The freshwater gold clam, or Corbicula fluminea, is native to eastern and southeast ...

Anyone can use the tool and provide data by using the survey available in the NIWA Citizen Science app. The survey/app provides a standardized way to record data on the characteristics of instream ...

How healthy is your stream? SHMAK - the New Zealand Stream Health Monitoring and Assessment Kit - has been designed to help you find out. NIWA’s Stream Health Monitoring Assessment Kit (SHMAK) gives ...

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Clive is an aquatic ecologist with more than 35 years of experience, specialising in freshwater and estuarine water quality and aquatic ecosystem processes. His expertise results from research in a ...

These guidelines have been developed to assist infrastructure designers and managers, waterway managers, environmental officers, iwi and local communities with understanding and promoting better ...

RiskScape, a collaboration between NIWA and GNS Science, is a software application for analysing natural hazard consequences. RiskScape software provides a risk analysis framework for calculating ...

This work is licensed under a Creative Commons Attribution 4.0 International License. These maps (click for full sized versions) are updated daily and are based on data from our National Climate ...

New Zealand's climate is complex and varies from warm subtropical in the far north to cool temperate climates in the far south, with severe alpine conditions in the mountainous areas. Mountain chains ...

The NIWA Biodiversity Memoir (NBM) series comprises technical works that describe New Zealand’s invertebrate marine life—sponges, corals, hydroids, worms, molluscs, crustaceans, sea stars and ...

The atmosphere is comprised of layers based on temperature. These layers are the troposphere, stratosphere, mesosphere and thermosphere. A further region at about 500 km above the Earth's surface is ...

El Niño Southern Oscillation: what is it? El Niño and La Niña are opposite phases of a naturally occurring global climate cycle known as the El Niño Southern Oscillation, or ENSO for short. ENSO ...