Freshwater and Estuaries news

News and media releases related to our freshwater and estuaries work.

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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.
Visitors to NIWA’s stand at this year’s Fieldays are invited to go diving into the Rotorua lakes—without having to get wet.
NIWA freshwater scientists are pinning their hopes of solving an age-old mystery on 10 female longfin eels who are about to begin an epic journey to their spawning grounds somewhere in the Pacific Ocean.
NIWA researchers are out on Lake Whakatipu for the next week mapping the lake floor for the first time.
In a secret training location on the outskirts of Hamilton, a squad of whitebait is being put through its paces by fish scientists.
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.
As a young child growing up on an Irish farm, one of Eimear Egan’s chores was to regularly clean out the well from where her family drew its drinking water. In the well lived a large eel that, no matter how many times it was shifted, just kept coming back.
Christchurch’s Red Zone is to be the focal point of a scientific experiment involving street lights and insects over summer. 
NIWA scientists have made an important breakthrough in the battle to save New Zealand’s freshwater mussels.
Humans don't always make it easy on fish to get where they are going. New Zealand's first national set of Fish Passage Guidelines – co-developed by NIWA - is expected to help.
A project to restore a stream catchment in Kaikōura—damaged in the 2016 earthquake—is being described as inspirational by NIWA scientists.
Cathy Kilroy is quick to admit she’s a person who doesn’t like throwing anything away.
The hard concrete surfaces that characterise New Zealand towns and cities are barely likely to register as a problem with most people. But they're never far from the minds of our urban water researchers.
On the bottom of New Zealand’s largest freshwater springs is an underwater garden of vivid green, pinks and inky blues.
A group of volunteers who love the Hutt River are helping to care for it over summer.

A new online survey is forming the basis of the National Riparian Restoration Database, which will help scientists to improve understanding of how riparian buffers benefit waterways.

NIWA has developed a smart addition to its suite of tools assisting in the planning, regulation and evaluation of water use.
Since the end of June, a barge has been stationed just off Wellington’s Miramar Peninsula drilling into the seabed to find an alternative water source for the city.
Local hapū and NIWA are working together to find out more about juvenile freshwater eels or tuna in streams connecting to the Wairua River in the Wairoa catchment in Northland.
There’s another way of measuring the health of rivers – the health of invertebrate populations that need them, says John Quinn, NIWA Chief Scientist, Freshwater and Estuaries.

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