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

SHMAK habitat – visual habitat assessment

The SHMAK visual habitat assessment gives your stream a score that you can use to assess changes over time or compare streams.

SHMAK Habitat – Visual Habitat Assessment

The SHMAK visual habitat assessment needs no equipment, only your eyes. It gives your stream a score that you can use to assess changes over time or compare streams.