Freshwater and Estuaries news

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

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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.
Water in the Blue Lake is the clearest freshwater ever reported.
An international team of scientists has analysed 7000 years’ worth of lake-bottom mud from central Hawke’s Bay to work out how often the region might expect earthquakes.
Te Waihora is a special lake in need of some intensive care. Together, scientists, iwi, locals and environmentalists are pooling their knowledge and resources to make it better.
Kneeling in the mud under the cover of trees, covered in anoraks, sandflies and dedication, three scientists are looking out for the little guy.
NIWA’s involvement in the restoration of Te Waihora, New Zealand’s fifth largest lake, was recently featured on Māori Television’s new series, Project Whenua.
NIWA and Auckland Council freshwater scientists using fish pheromone samplers have made a rare discovery in two Auckland streams.
Freshwater issues are among the most important environmental issues facing New Zealanders and receive frequent news coverage.
A NIWA study has shown that environmental factors influence the level of mercury in fish and other organisms in lakes in New Zealand's North Island geothermal area
Your favourite lake may look picturesque, calm and inviting but beware what lurks beneath – aliens are on the attack.
After two years of groundwork, NIWA scientists have finally unlocked the mystery of the elusive lamprey breeding grounds.
NIWA scientists have secured funding for a project they hope will take them a step closer to discovering why the number of freshwater crayfish, or koura, in the Upper Waikato River has dramatically declined.
Next week, NIWA scientists will showcase the latest version of the National Freshwater Fish Database at an international conference in Hamilton.

Work to restore islands in the Waikato River is a step closer with the completion of an illustrated species guide to plants already established on the islands.

NIWA scientists have made an important discovery about the spawning habits of New Zealand's largest whitebait species in a central Hamilton stream.

NIWA has recently completed a national project for modelling the leaching of copper from antifouling paints on vessels' hulls.


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