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Chemical contamination and wood processing
What are the sources of chemical contamination from wood processing? -
Tuna - elvers and recruitment
Once in freshwater, glass eels develop into darker pigmented juvenile eels known as elvers. -
NZ Freshwater Fish Database Help
Learn how to use the New Zealand Freshwater Fish Database (NZFFD) -
Riparian management classification
Management of stream riparian areas - including vegetation and stock access - influences the health of streams and downstream water bodies. -
Infectious substances
Waterways can easily become contaminated by pathogens when effluent is discharged nearby. -
Chemical contamination and agriculture
What are the potential sources of chemical contamination from agricultural activities? -
Urbanisation
Aotearoa’s main urban areas cover approximately 2% of total available land. -
Identification and e-guides
Downloadable and printable guides on identification of common freshwater invertebrates found in New Zealand waterways and lakes. -
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? -
Suspended-sediment yield estimator
This national GIS ‘layer’ enables reconnaissance-scale estimation of suspended-sediment yields from New Zealand’s rivers and streams. It has been developed by NIWA in collaboration with Landcare Research. -
Water take
Water take (also known as water abstraction) has a range of valuable public and private uses.
