Rivers

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 are some recent publications related to the Hydrological observations and predictions programme

2016

Yang, J., McMillan, H., Zammit, C. 2017. Modelling Surface water-groundwater interaction in New Zealand: Model development and application. Hydrological Processes, 31:925–934, DOI 10.1002/hyp.11075.

New Zealanders are increasingly demanding better information on how much water is in our rivers and groundwater aquifers, how that has changed over time and how it might change in the future. This programme will increase our understanding of the hydrological cycle: the quantity of freshwater in our rivers and groundwater systems, where that water came from and how long it took to get there.

Welcome to Freshwater Update 54. This issue features some of the latest work from our Freshwater and Estuaries teams, Water Quality maps and information and  River flow maps for Autumn.

Latest news from the centre includes: Float your boat! Scientists use hi-tech miniature Q-boat to measure river flows 

Welcome to Freshwater Update for May 2012.

This issue contains news about work from NIWA's Freshwater team, and Water Quality maps and information for the period January, February, March 2012.

As well as the articles below, the following have been added to our website:

Robot spies make new science discoveries in Fiordland's World Heritage Park

Small native fish eat a range of benthic invertebrates in streams. The larvae of mayflies and caddisflies are the most important food species, with chironomids being important for juvenile fish and in streams where all other prey are scarce.
River floods occur when water spills from a river channel onto land that is normally dry, and are one of New Zealand's costliest natural hazards.

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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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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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