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River Environment Classification REC2
The River Environment Classification (REC) is a database of catchment spatial attributes, summarised for every segment in New Zealand's network of rivers. -
Understanding and predicting floods and their impacts
Feature story06 June 2017Floods are not unusual in New Zealand, but those that hit us early this winter broke records. Why did they occur? Should we expect more? Can we predict future floods? -
Loss of riparian vegetation
Plants and trees along the water margins and banks are called riparian vegetation. -
Piharau
Piharau/kanakana are an important mahinga kai species and a prized delicacy for many Māori. -
Sediment
When soils erode, sediments are washed into waterways. -
Aquaculture Activities
Shellfish gathering and farming take place in marine and freshwater environments. -
Algal monitoring service
ServiceBlooms of hazardous cyanobacteria (blue-green algae) in rivers, lakes and reservoirs can cause problems for both animal and human health. How can you find out whether an algal bloom is potentially toxic? -
Sediment and forestry
How may forestry activities increase sediments in waterways? -
Cropping activities
The land used to produce crops is usually flat to gently rolling so it can be tilled, sowed, and harvested. -
What do we measure?
Research ProjectA range of physical and chemical variables are measured in the NRWQN. -
Impacts of wood processing
Impacts of timber processing activities on water quality and mahinga kai.