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Summary of report findings
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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.
Liquefaction report
If an earthquake hit the Glenorchy area what would happen? An engineering report from Tonkin + Taylor Ltd looks at the risk Glenorchy township has to liquefaction and the possible impacts natural hazards could have on the area.
Flood Hazard report
Land River Sea Consulting Ltd (LRS) assessed the flood hazard to the Dart-Rees floodplain and Glenorchy from the Dart and Rees Rivers, and high levels in Lake Wakatipu. Read the findings now.
