Lakes

Latest news

NIWA discusses, in depth, this year's most asked question—what is happening to our fresh waterways?
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.
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

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). 

Our work

This research project aimed to understand the causes behind differences in mercury in trout and other organisms in the Bay of Plenty/Te Arawa lakes—in particular what features of each lake explain why mercury in trout is higher in some lakes than in other lakes.

NIWA recently hosted visitors from Northland to view cultivated plants from Lake Ōmāpere that are now ‘extinct in the wild’, and discussed plans for their reintroduction to the lake in the future. 

The ability to properly manage our freshwater resources requires a solid understanding of the flora and fauna which live in and interact with them.
This project aims to increase our knowledge of aquatic ecosystems and their restoration, and apply this to degraded streams, rivers, lakes and estuaries.

July's FWU includes water quality maps and information. 

Retrospective river flows, July to September 2011

What we predicted for July 2011 to September 2011

River flows are likely to be normal in the North Island and north of the South Island, and normal or below normal in the rest of the South Island. 

What actually happened during July 2011 to September 2011

River flows were normal to below normal for most of the country, with some above normal river flows in the eastern North Island, eastern Southland and coastal Otago. 

 

DipCon 2011

18 September 2011 to 23 September 2011

NIWA sponsored the 15th International Conference of the IWA Diffuse Pollution Specialist Group on: Diffuse Pollution and Eutrophication. 

Welcome to NIWA's third Alumni Update – an e-newsletter for past NIWA employees.

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, including hydrilla, hornwort and lagarosiphon (an oxygen weed).

Welcome to NIWA's second Alumni Update – an e-newsletter for past NIWA employees.

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All staff working on this subject

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Freshwater Fisheries Ecologist
Principal Scientist - Aquatic Pollution
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Environmental Monitoring Technician
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Freshwater Fish Ecologist
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Environmental Scientist
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