Rivers

Latest news

A new study has identified seven freshwater species native to Aotearoa-New Zealand that will likely be highly or very highly vulnerable to climate change.
Under the light of the moon where the river meets the sea, NIWA researchers are planning to catch tiny fish that are all but invisible to the naked eye.
It may be rubbish to everyone else, but to Amanda Valois each little scrap of plastic on a river bank or in a waterway tells a valuable story.
Christchurch’s Red Zone is to be the focal point of a scientific experiment involving street lights and insects over summer. 

Our work

Maniapoto Māori Trust Board and NIWA worked collaboratively during 2018-19 to support Ngāti Maniapoto whānau to reconnect with and participate in the assessment of their freshwater according to their values.
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 ability to properly manage our freshwater resources requires a solid understanding of the flora and fauna which live in and interact with them.
The alp-fed braided rivers of Canterbury are treasured for their landscape, recreational amenities, salmon- and trout-fishing, and unique riverine environments – which provide habitat to a host of endangered birds – but they are under threat from land-use intensification and a growing demand for irrigation water.

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.

River flows Update, October 2011

Monthly and seasonal river flow information and our outlook for the coming three months. 

 

September 2010 river flows

Click on the map to enlarge

River flows, July to September 2011

Cumulative flows over the three months, July to September 2011. Click on the map to enlarge

Outlook by region, July to September 2011

Exotic aquatic plants, introduced to New Zealand for the aquarium and ornamental pond trade, are silently invading our waterways, but new research by NIWA scientists is helping to lower this risk by finding native alternatives for the trade.

New research on the effectiveness of the herbicide endothall shows favourable results in the battle to rid lakes and rivers of New Zealand’s most invasive aquatic weeds, including hydrilla, hornwort and lagarosiphon (an oxygen weed).

Stormwater 2011

3 May 2011 to 6 May 2011

The Stormwater Special Interest Group of Water NZ is holding the 7th South Pacific Stormwater Conference on the 3rd-6th May at the Sky City Convention Centre, Auckland, NZ.
The aim of the 2011 conference is to provide delegates with an opportunity to:

* Upskill in various areas of stormwater science and management
* Network with peers
* Hear new and cutting edge stormwater information

Suggested themes for sessions at the 2011 conference include:

* Low impact design and development
* Success in Stormwater management
* Climate change
* Stormwater and Public Health
* Catchment management

Our latest water resources information from around New Zealand, including the outlook for the summer.

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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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Land and Water Scientist
Assistant Regional Manager - Christchurch
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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