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Fish Passage
Understanding and supporting the migration of fish through New Zealand's freshwater habitats -
Roto Turf: Aquatic plant ‘life rafts’ in degraded lakes
Research ProjectA team of NIWA freshwater ecologists are researching the use of biodegradable plant mats to help reintroduce native aquatic plants to degraded freshwater lakes in Aotearoa-New Zealand. -
River flow forecasting
Research ProjectNIWA is developing a national river flow forecasting tool for New Zealand that aims to support and strengthen our planning for and response to extreme rainfall events. -
Freshwater Ecological monitoring
We offer a range of ecological monitoring tools. -
Restoration of aquatic ecosystems
Research ProjectThis project aims to increase our knowledge of aquatic ecosystems and their restoration, and apply this to degraded streams, rivers, lakes and estuaries. -
The Bio-Acoustic Fish Fence
Research ProjectInvestigating the effectiveness of an acoustic bubble-screen in minimising the movement of pest fish -
Ngaa taonga tuku iho o ngaa roto o Tahaaroa
Research ProjectDeveloping the monitoring and evaluation approaches that respond to the hauanga kai aspirations of Ngaati Mahuta -
Wetland wonders: cleaning up our freshwater
Media release11 June 2024Constructed wetlands a natural solution to reduce agricultural pollution. -
Lake Wānaka mapped in exquisite detail
Media release16 May 2024NIWA scientists have mapped the whole of Lake Wānaka in incredible detail. -
Better runoff and hazard predictions through national-scale snowmelt forecasting
Research ProjectDeveloping a snowmelt forecast system to enable more accurate and confident forecasts of river flow and alpine hazards. -
Hunting for freshwater ‘freak of nature’ in Otago
Media release18 April 2024A team of NIWA scientific divers have successfully searched for a freshwater freak of nature in Otago’s alpine lakes. -
Freshwater restoration
NIWA measurement, research and tools support strategies being used to reverse the degradation of freshwaters and restore ecosystems throughout New Zealand.