Atmospheric analysis

Charts of coastal bathymetry, sediment, and other information are available for purchase.

Today's UV Index

This manual prescribes a set of sampling and analysis protocols applicable to most of the common stream habitats in New Zealand.

Short-term to long-term data estimation

Glass eels (about 5.5 to 7.0 cm) arrive in fresh water during spring, especially during September and October, although they may be present from July to December.

Some simple steps to minimise the effects of mining activities on water quality and mahinga kai.

Post-Doctoral Fellowship positions at NIWA.

Māori have an extensive knowledge of the ecology of freshwater eels, and have maintained their customary fisheries for several centuries.

You can download these summaries in a range of formats.

One of the most common species of freshwater fish in Aotearoa is the common bully or toitoi.