Freshwater
New Thinking
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
Watercress - one step to cleaner waterways?
NIWA scientists have found that watercress may have the potential to absorb nitrate and phosphate from waterways, helping clean up lakes and rivers.
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.
Solving the P problem
NIWA scientists are part of team which is finding ways to reduce the phosphorus problem in lakes.
Getting to grips with native freshwater eels
Our native longfin eels appear to be on the decline, and NIWA scientists are hoping to aide their conservation with innovative population models.
River study to measure health
Southland tangata whenua in partnership with Landcare Research are undertaking a two-and-a-half-year project to gather new information on the Mataura River system.
Keeping pest plants at bay
NIWA's research into freshwater pest plants has been expanded.
Christchurch rivers polluted with cancerous toxins
Christchurch rivers contain double the national safety limit of cancer-causing chemicals, a new NIWA study says.
Reducing effects of wallowing
An AgResearch study has found that water quality was poor in unfenced and partially fenced streams where deer could wallow, but it improved after it flowed out of a 6ha area retired from grazing.
New Value
Overhaul for the National Hydrometric Network
NIWA is managing a nationwide upgrade of the New Zealand's 300-plus lake and river monitoring stations.
Freshwater fish finder
A new NIWA study answers questions on 'what lives where?' in our freshwater habitats.
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) is a sophisticated, map-based database containing all major water quality parameters from 77 river monitoring sites around New Zealand.
Fish-friendly floodgates ready
A NIWA-led team has designed a new floodgate with many benefits, not least for freshwater fish.
