Atmospheric analysis

Defining drought and identifying its causes and impacts on humans.

What are the sources of chemical contamination from wood processing?

Data from our research which we make publicly available.

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.

Diverting water changes a waterways natural flow

How may forestry activities increase sediments in waterways?

NIWA's Hydro Web Portal provides river flow and water quality monitoring data from NIWA’s Benchmark river monitoring network.

New Zealand has just experienced its warmest winter on record, according to official NIWA climate data.

Piharau/kanakana are an important mahinga kai species and a prized delicacy for many Māori.

NIWA operates about 30 other Maritime New Zealand-certified vessels based at Bream Bay, Auckland, Hamilton, Rotorua, Turangi, Wellington, Nelson, Greymouth, Tekapo, Christchurch, and Dunedin.