Freshwater

NIWA's research on freshwater monitoring and reporting is one of three research areas within the 'Values, Monitoring and Outcomes' (VMO) programme led by Landcare Research.

Tuna or freshwater eels are a very significant, widely-valued, heavily-exploited, culturally iconic mahinga kai resource.

A list all of New Zealand's freshwater fish species.

We have prepared a breakdown of the different guidelines that are available for sampling freshwater fisheries. The overview provides links to key documents that explain what should be considered when designing fish monitoring studies and how to implement the various sampling techniques.

Links to related resources and websites

There are two methods to determine visual clarity in SHMAK; the clarity tube (or SHMAK tube) and the black disc method.

Descriptions of the common terms that explain the processes that occur in hydrology.

Longfin eels are the largest and longest-lived fish in New Zealand's freshwaters, and where they are present they are the top predator.

Land is tilled, sowed, and harvested for horticultural crops to grow.

How do nutrients from wastewater treatment enter waterways?

This identification guide covers the common crustose coralline algae found in central New Zealand.