Freshwater and Estuaries news

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

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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.
The government recently released the ‘Clean Water’ package of proposed reforms, aimed at making more of our rivers swimmable. But how is ‘swimmable’ to be measured, and do these measures stack up?
Returning water to our waterways after we’ve used it in our homes, on farms and in industry is a complex and challenging process.
NIWA's Freshwater and Estuaries Chief Scientist Dr John Quinn believes the dairy industry has been responsive in the tools it has adopted to reduce its impact on waterways.
NIWA discusses, in depth, this year's most asked question—what is happening to our fresh waterways?
Farmers coming to Fieldays next week are being asked to share their experiences of restoring streams when they visit the NIWA stand.

NIWA scientists have written a guide for managing mangroves, prompted by a desire for people to learn more about mangrove ecosystems, and what happens when they are removed.

NIWA provides technical background information on "Clean Water" swimmability proposals.

As New Zealand's "Mr Eel", Niwa's Dr Don Jellyman has heard every tall tale. And some of them may be true.

New Zealand’s mangrove swamps and coastal marshes may be particularly adept at absorbing and storing the carbon we emit.

New research has revealed that citizen science monitoring of water is a win-win for scientists and volunteers—one gains access to new data, and the other the skills and confidence to become involved in discussions over what is happening to their streams.
Science and Innovation Minister Steven Joyce has today announced the creation of a new freshwater institute between NIWA and the University of Waikato.
A whole of catchment Report Card for the Waikato and Waipa rivers has been released by the Waikato River Authority giving the catchment an anticipated low rating for its wellbeing.
NIWA researchers have spent part of the last month keeping a close eye on the bottom of Lake Tekapo to find out what it looks like and what is going on below the lake bed.
Scientists are taking some high-tech equipment to Fiordland next week to find out more about what happens when a river meets the ocean.
The increasing threat of marine pests to New Zealand’s biosecurity is the focus of a major new research project to be conducted by NIWA scientists.
NIWA scientists and Northland Regional Council staff are uncovering more of the mysteries of the North’s prized dune lakes using a canoe and some specialist hydro-acoustic surveying equipment.
Identifying creepy crawlies in your local stream just got a whole lot easier and faster, thanks to a new 3D identification system developed by a NIWA researcher.
NIWA researchers have produced a series of calendars to inform people when New Zealand's native freshwater and sport fish are migrating and spawning.

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