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Freshwater mitigation systems
Effective systems to manage contaminant losses -
Stopping the gold clam: It's now or never
A NIWA-led programme to develop effective, and culturally-attuned strategies for managing the freshwater gold clam. -
Fish Passage
Understanding and supporting the migration of fish through New Zealand's freshwater habitats. -
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. -
How many replicates do I need?
The standard six‑replicate eDNA design was set to give a robust, nationally consistent picture of stream fish communities. -
Using eDNA in your stream
By detecting these traces of DNA, eDNA can provide a picture of the fish community present in a waterway without the need to capture fish. -
Fish in pastoral streams
The fact sheets on this page introduce the species you're most likely to encounter in pastoral catchments across Aotearoa. -
Freshwater fish & eDNA
Research ProjectNew Zealand has one of the most distinctive freshwater fish faunas in the world. -
About the resource consent process
Learn about the Resource Management Act, Resource Consents, and how to prepare a submission. -
Fish screening: principles of good design & operation
Effective fish screen facilities balance design principles to protect fish while maintaining reliable water supply.
