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Water dams
Damming water for urban use, hydro-electric power generation, irrigation, and other industrial and commercial uses. -
Tuna - spawning grounds
All species of freshwater tuna spawn at sea, although the spawning grounds of only four species are known with certainty worldwide. -
Inanga
Inanga are the predominant species in the modern whitebait fishery. -
What is Kaitiaki Tools?
Kaitiaki Tools is a guide to teach people (especially hapū and iwi groups) who manage the resource consent process. -
Water resources and mining
How may the activities of the mining industry influence water resources? -
Stepping into the river
Feature story06 June 2017NIWA discusses, in depth, this year's most asked question—what is happening to our fresh waterways? -
Chemical contamination and wood processing
What are the sources of chemical contamination from wood processing? -
Stream periphyton monitoring manual
This manual prescribes a set of sampling and analysis protocols applicable to most of the common stream habitats in New Zealand. -
Mitigation and best practice options
Some simple steps to minimise the effects of mining activities on water quality and mahinga kai. -
Impacts of water dams
What are the impacts of water dams on water quality and mahinga kai? -
Tuna - elvers and recruitment
Once in freshwater, glass eels develop into darker pigmented juvenile eels known as elvers.
