Two investigations were delivered to the community in June 2022, and include a geotechnical investigation, by Tonkin + Taylor Ltd, looking at liquefaction and lateral spreading caused by a major earthquake. The second, by Land River Sea Consulting Ltd, assessed the flood hazard from the floodplain, Dart and Rees Rivers, and high levels in Lake Wakatipu.

These reports were first released to ORC and affected residents early in June. The wider public was notified afterwards. 

The reports were endorsed by the Otago Regional Council on 9 June 2022. 

Read the short summary (link below) of both report findings, explaining the key points with images to illustrate lateral spreading, the floodplain and what might happen in an earthquake or flood.  

 

Glenorchy township showing the locations of geotechnical investigations completed for the liquefaction vulnerability study.

Glenorchy township showing the locations of geotechnical investigations completed for the liquefaction vulnerability study

Page last updated 21 June 2024.