Freshwater quality

How healthy is your stream? SHMAK - the New Zealand Stream Health Monitoring and Assessment Kit - has been designed to help you find out.

Has a receding lower jaw and black spots behind the head.

How does urbanisation increase sediments in waterways?

Links to related resources and websites

Smelt have a distinctly forked tail and a strong cucumber smell.

A range of physical and chemical variables are measured in the NRWQN.

NIWA is doing a nationwide study to discover what makes the best riparian projects. Help us give you the knowledge to make the best riparian management decisions possible by taking our 5 minute survey.

NIWA provides technical background information on "Clean Water" swimmability proposals.

New Zealand’s freshwater and estuarine resources provide significant cultural, economic, social, and environmental benefits. Competition for the use of these resources is intensifying, and many rivers, lakes and estuaries are now degraded.

The tools available for restoring kōura to lakes and streams depend on what is causing kōura to decline.

First, determine if kōura should be present in your stream.

Identifying the factors causing kōura numbers to decline will allow you to determine which restoration tools you need to employ.