Freshwater

Introducing NIWA sediment transport scientist Clare Wilkinson.

A short-lived, strikingly stunning native mayfly known to fly-fishers and aquatic admirers yet seldom seen by the public may have its time in the spotlight this month as a nominee for the 2025 New Zealand Bug of the Year.

A 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.

NIWA is using biodegradable “life rafts” to reintroduce native plants to degraded lakes. 

Scientists find link between temperature and carbon storage rates

Maintaining good water quality is important for healthy ecosystems and healthy humans. NIWA are experts in providing and servicing the water quality monitoring equipment you need to effectively monitor water quality in lakes, streams, coastal waters and estuaries

Specialists in the chemical analysis of rivers, lakes, oceans and streams

NIWA has been awarded $10.2m to eradicate an invasive clam that was only recently discovered in New Zealand waters.

Investigating the effectiveness of an acoustic bubble-screen in minimising the movement of pest fish

Developing the monitoring and evaluation approaches that respond to the hauanga kai aspirations of Ngaati Mahuta

Constructed wetlands a natural solution to reduce agricultural pollution.

NIWA scientists have mapped the whole of Lake Wānaka in incredible detail.