Latest news

Preliminary analysis by NIWA climate scientists has shown that the recent Canterbury rainfall was so extreme in some inland places that it could be expected to happen only once every 200 years.
The prodigious rainmaker that hit Canterbury earlier this month saw NIWA field teams out in the elements collecting flood data from bridges, cableways and jetboat gaugings.
A NIWA scientist is asking for the help of skiers, mountaineers and alpine professionals to collect snow for a new research project.
Environmental monitoring technician Patrick Butler has spent hours travelling between the upper and lower reaches of Canterbury’s Waimakariri and Hurunui Rivers. His mission – river water quality sampling.

Our work

The eFlows Explorer webtool is designed to aid broad-scale river flow management planning across New Zealand
Currently there are gaps in understanding of user decision making processes and public needs and requirements for river forecasting in New Zealand. This project aims to bridge NIWA river forecasting aspirations and capabilities with both the public and decision makers’ requirements.
The New Zealand Fish Passage Guidelines sets out recommended practice for the design of instream infrastructure to provide for fish passage.
New Zealand’s freshwater and estuarine resources provide significant cultural, economic, social, and environmental benefits. Competition for the use of these resources is intensifying, and many rivers, lakes and estuaries are now degraded.

Latest videos

The world's most mysterious fish

A video about The world's most mysterious fish. NIWA researchers are working with iwi to try to unlock the secrets of New Zealand tuna—freshwater eels. Every year tiny, glass eels wash in on the tide at river mouths along our coast. But where do they come from and how do they get there?


Overview of SHMAK
How healthy is your stream? SHMAK—the New Zealand Stream Health Monitoring and Assessment Kit—has been designed to help you find out.
A day out measuring at Molesworth
A day out measuring at Molesworth
Modelling vegetation-impacted morphodynamics in braided rivers
NIWA is developing numerical models for predicting how the morphology of braided rivers responds to flow regulation and invasive exotic woody vegetation.

These guides are designed for rapid identification of freshwater flora and fauna for use in biomonitoring.

Key points from the structured interviews conducted by Waitao-Kaiate Environment Group

Key points from the semi-structured interviews

The different kinds of social survey methods are detailed below.

Glossary of social research terminology

Two pieces of social research were undertaken in the Waitao catchment.

A survey or interview is essentially a way to collect data from people.

A restoration project must 'fit' within a local community. In other words, it must align with local values, goals and vision for the future in order to be supported by the community.

An introduction to the use social research methods to aid aquatic restoration projects.

NIWA and IBM today announced a multi-million dollar partnership where NIWA will purchase one of the world’s most powerful supercomputers for use in environmental forecasting.

A regular newsletter that includes a seasonal review and outlook for New Zealand's water resources, and an update on some of NIWA's freshwater and estuaries research.

New caddisfly species revealed

Brian Smith sets up a light trap. (Photo: Stephanie Parkyn, NIWA)
(Inset – an example of the caddisfly catch) (Photo: Brian Smith, NIWA)

NIWA scientists have discovered two species of caddisfly that are new to science, using specially-designed ultraviolet light traps. One species was found in a southern Waikato river, and the other, a microcaddisfly, and literally the size of a pinhead, was found in the Mangaiti Reserve in Hamilton City.



All staff working on this subject

Hydro-ecological Modeller
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Freshwater Hydro-Ecologist
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Riparian and Wetland Scientist
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Hydrological Modeller
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River Geomorphologist
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Land and Water Scientist
Assistant Regional Manager - Christchurch
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Coastal and Estuarine Physical Processes Scientist
Principal Scientist - Aquatic Pollution
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Hydrology Scientist
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Environmental Monitoring Technician
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Coastal Technician
Freshwater Fish Ecologist
Environmental Monitoring Technician
Hydrodynamics Scientist
Resource Management Scientist
Regional Manager - Auckland
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Environmental Scientist
Algal Ecologist
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