Atmospheric analysis

Welcome to the NIWA Township Flood Challenge game.

A weekly update describing soil moisture patterns across the country to show where dry to extremely dry conditions are occurring or imminent.

Understanding the trends in recreational fisheries is key to ensuring sustainable fisheries across the country.

Charts and posters webform

NatHERS climate files 2012 - data request webform

The Tongan deepwater demersal line fishery is a valuable source of income, livelihood, and social well-being for the people of Tonga. The fishery has a history of boom-and-bust cycles with fluctuating catches and poor economic returns.

A weekly update describing soil moisture patterns across the country to show where dry to extremely dry conditions are occurring or imminent.

Reducing the risk of new freshwater invasive species, minimising the impacts of these species, and developing methods for reducing or eradicating those populations.

A web-based taxonomic resource tool has been developed to improve the accuracy and consistency in soft sediment estuarine and coastal benthic intertidal and shallow subtidal macroinvertebrate identification across New Zealand.

NIWA's coastal hazards research is improving knowledge and providing tools to help understand coastal hazards and potential impacts for Aotearoa New Zealand – both now and in the future as sea levels continue to rise.

A weekly update describing soil moisture patterns across the country to show where dry to extremely dry conditions are occurring or imminent.

Updated 2025 – guidance for water quality monitoring in rivers, lakes and estuaries