On 1 July 2025, NIWA merged with GNS Science to become Earth Sciences New Zealand.

Turbid water in the Oreti River, Southland, during a November 2018 flood.

Figure 1 - Turbid water in the Oreti River, Southland, during a November 2018 flood.

Figure 1 - Turbid water in the Oreti River, Southland, during a November 2018 flood.

 

Sediments