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New Thinking

Many lakes in poor state of health

Some of the country's filthiest lakes have been revealed – with a NIWA report suggesting that as many as a third may be unhealthy.


‘Choose wisely to safeguard water’

NIWA principal scientist Ross Woods is calling for some “hard decisions” on water allocation.


'Water footprint' as pressing as carbon dioxide emissions

According to Plant and Food Research - if you want to be environmentally chic you need to be concerned about your water footprint.


Focused research in effort to fix Canterbury water woes

The National Institute of Water & Atmospheric Research’s (NIWA) scientific expertise is to be focused on improving the management of freshwater resources in Canterbury.


The complexities of water governance

A new report looking at water resource governance in Canterbury highlights the ever–increasing difficulties in managing water resources and creating effective solutions for future generations.


Research builds bridge over troubled water

A new Landcare Research project aims to improve cooperation on water management, and bridge rifts over managing water and other natural resources.


Keeping it fresh

A community forum at the upcoming NZ Freshwater Sciences Society conference in Rotorua, sponsored by Ensis will allow the public to hear and questions of New Zealand’s leading lake scientists.


New Science

What good is wood in streams?

Freshwater ecologist Dr Brenda Baillie has completed a two-year study of naturally forming, small debris dams that have an important positive role as habitat for aquatic invertebrates in forested headwater streams.


Smart Ideas Fund for new DNA tracer

A new project is underway to develop a new environmentally safe tool for simultaneously tracking multiple water contamination sources and pathways


Scion plays part in the water quality picture

A modified zeolite product developed by Scion has been used to treat potentially toxic algal blooms in Rotorua lakes. The product, marketed by Blue Pacific Minerals under the trade name “Aqual P”, is one of many tools being used by the Bay of Plenty Regional Council as part of their lake clean-up efforts.


NIWA scientists alleviate concern over 1080

NIWA scientists have found little cause for concern about the possibility of 1080 contamination in streams. This finding was part of a detailed investigation on the West Coast, during August last year.


Ancient creatures re-discovered thriving in southern New Zealand

Some of the world’s most ancient and fascinating animals have been re-discovered in southern New Zealand. Prospects for their survival look good – provided groundwaters and wetlands are protected.


Monitoring provides insight into river water quality

Two decades of monitoring of river water quality by NIWA has provided important information that is helping to care for New Zealand’s iconic rivers.


Watercress - one step to cleaner waterways?

NIWA scientists


Doom for Algal Bloom?

An innovative solution to a billion-dollar problem has been successfully trialled by Scion. A modified form of zeolite, a natural volcanic mineral, looks set to be a new tool in the campaign to mitigate the effects of nutrient run-off in New Zealand's lakes and waterways.


Topnet - hydrology at a national scale

NIWA has built a hydrological model of all New Zealand river catchments, a major advance towards understanding national water resources.


NIWA helps Sanctuary in the great perch search

Scientists from NIWA will be using state-of-the-art echosounder technology to get to the bottom of a perch problem that has been plaguing Wellington's conservation safe haven, Karori Sanctuary.


New Value

Lake assessment tool earns high honour for NIWA scientist

John Clayton, a principal scientist in the fields of aquatic biodiversity and biosecurity based at NIWA's Hamilton office, has won a 2011 Kudos award for his leading role in the development of LakeSPI  (Lake Submerged Plant Indicators).  LakeSPI is a  tool widely used to assess and rate the ecological condition of New Zealand lakes.


Scion’s water quality technology licensed to South Waikato company

A novel way to improve the water quality of lakes and other waterways, developed at Crown Research Institute Scion, has been licensed to Blue Pacific Minerals based in Tokoroa.  The exclusive licence is for the manufacture, sale and global distribution of modified zeolite.


Endothall helping in the fight against invasive aquatic weeds

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.


Karori perch pests successfully culled

Electro-fishing and netting have successfully reduced perch numbers in a conservation safe haven.


Overhaul for the National Hydrometric Network



Freshwater fish finder

A new NIWA study


Analysing water quality data just got easier

A new software programme for analysing water quality data, ‘Time Trends’, has been released by NIWA.


GNS Science lab ranked top in world

A water dating laboratory operated by GNS Science has come out top in an accuracy test in which 70 water dating laboratories around the world participated.


Water quality data - and it's all free!

Need water quality information? NIWA's freely available Water Quality Information System (WQIS)


Fish-friendly floodgates ready

A NIWA-led team has designed a new floodgate with many benefits, not least for freshwater fish.


Crown Research Institutes

  • AgResearch logo.
  • Plant and Food Research logo.
  • ESR logo. GNS Science logo.
  • Landcare Research - Manaaki Whenua logo.
  • NIWA logo.
  • SCION logo.

Crown Agent

  • Callaghan Innovation logo.

Subsidiaries, associates, joint ventures

  • grasslanz
  • EnCoate
  • VARNZ Ltd
  • Prevar
  • Veritec
  • PhytaGro, Inc
  • Enviro-Mark Solutions
  • Grasslands Innovation
  • BioPacific Ventures
  • Atlastech
  • farmax
  • National Land Resource Centre (NLRC)
  • Clone International
  • Virtual Institute of Statistical Genetics
  • Biopolymer Network
  • EcoGene