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

Debra Glasgow

Arne Pallentin
Debra Glasgow

Steve George
Debra Glasgow

Caroline Chin
J.Clayton

Rototiller
J.Clayton

Rototiller results
NIWA

Underwater view of a suction dredge
R. Wells

Surface view of a suction dredge
J. Clayton

Drain weed harvester
P. Champion

Lake Opouahi - Photo: P. Champion
Debra Glasgow

Rob Stewart
R. Wells

Weed harvester
Outlook - April - June 2014