Probabilities are assigned in three categories: above average, near average, and below average. Temperatures are very likely to be above average (60% chance). Rainfall totals are about equally likely ...

NIWA is leading a voyage (TAN2206), between 9th April and 6th May 2022 to Hunga Tonga - Hunga Ha’apai (HT-HH) volcano within the Kingdom of Tonga. Subsequent to a recent eruption at HT-HH, this voyage ...

A team of NIWA freshwater ecologists have completed their research on the use of biodegradable plant mats as life rafts to help reintroduce native aquatic plants to degraded freshwater lakes. The ...

State Owned Enterprises Minister Simeon Brown and Science, Innovation and Technology Minister Shane Reti today jointly announced that Cabinet has agreed to proceed with NIWA’s acquisition of ...

Rainfall Below normal rainfall (50-79% of normal) or well below normal rainfall (<50% of normal) was observed across much of the North Island, and northern, western and inland parts of the South ...

Freshwater Update 92 brings you the latest information from NIWA's Freshwater Centre.

A new online tool that identifies areas at risk from groundwater flooding has been developed by New Zealand scientists. Groundwater flooding occurs when the water table rises close to the surface, ...