-
River Environment Classification
The River Environment Classification (REC) is a database of catchment spatial attributes, summarised for every segment in New Zealand's network of rivers. -
Identification and e-guides
Downloadable and printable guides on identification of common freshwater invertebrates found in New Zealand waterways and lakes. -
Analysis of water quality trends
NIWA has developed a powerful software tool for the analysis of water quality data. -
Chemical contamination and wastewater
What are the potential sources of chemical contaminants in wastewaters? -
Ecotoxicology services
ServiceNIWA offers a range of standard toxicity tests for both freshwater and marine environments. -
Sediment and forestry
How may forestry activities increase sediments in waterways? -
Chemical contamination
Chemical contaminants are chemicals toxic to plants and animals 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. -
Algal monitoring service
ServiceBlooms of hazardous cyanobacteria (blue-green algae) in rivers, lakes and reservoirs can cause problems for both animal and human health.
