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

1_snowline_survey_tasman_glacier_G0023712_credit_dave_allen_NIWA-2400.jpg

Dave Allen

High above one of New Zealand's most famous glaciers - The Tasman. Since 1990 the ice has retreated an average of 180 metres per year. Tasman Lake at the terminus of the glacier is a result of the glacier's decline, before 1973 it did not exist.