Lakes

Latest news

A combination of artificial intelligence and scientific ingenuity looks set to be the next step forward in protecting Aotearoa New Zealand’s lakes and rivers from invasive aquatic weeds.
How much is too much? Susan Pepperell looks at some of the tough decisions looming around access to freshwater and how science is helping with solutions.
A new study has identified seven freshwater species native to Aotearoa-New Zealand that will likely be highly or very highly vulnerable to climate change.
For more than 20 years NIWA scientists have been nurturing three plants that are the only examples of their kind in existence.

Our work

Three plants of an endemic submerged quillwort (Isoëtes) were recovered from Lake Ōmāpere by NIWA in 1998, prior to the lake weed (Egeria densa) dying off and the lake switching into an algal dominated turbid state. No further isoëtes plants have been observed in the lake since that time.
Maniapoto Māori Trust Board and NIWA worked collaboratively during 2018-19 to support Ngāti Maniapoto whānau to reconnect with and participate in the assessment of their freshwater according to their values.
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 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.

Latest videos

Diving deep to check up on our lakes

NIWA scientists jump overboard to check out the health the Rotorua Te Arawa lakes. The work is part of NIWA's national LakeSPI programme—an ecological health check for lakes throughout New Zealand. 
Underwater research to protect and maintain New Zealand's freshwater resources.

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. 

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).

Our latest water resources information from around New Zealand, including the outlook for the summer.

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All staff working on this subject

Principal Scientist - Freshwater Ecology
Principal Scientist - Aquatic Pollution
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Environmental Monitoring Technician
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Freshwater Ecologist
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Coastal Technician
Freshwater Fish Ecologist
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Environmental Scientist
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