Head of Lake Wakatipu (Whakatipu-wai-Māori)

Natural hazards adaptation project

The Head of Lake Wakatipu, including Glenorchy, Kinloch, and surrounding rural areas of the Dart and Rees Valleys, Paradise, and Greenstone, is a dynamic environment with a long history of large-scale environmental changes to rivers and floodplains. The area is also known to be very seismically active. 

As many in the community will know, the council has commissioned new flood hazard and geotechnical investigations that are now completed. These detail modelling and analysis that provide a much better understanding of the area’s natural hazards.

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.

 

New findings

The two investigations 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.  

The reports are now available click on the relevant tile below.

You can also read a much shorter summary of both the reports (containing a number of images) below.

You can also request answers to questions about the reports and the adaptation project. If you want to participate in the adaptation project, find out about our community sessions, sign up to the monthly newsletter or get in touch by email (headofthelake@orc.govt.nz) or calling 0800 474 082.

 

Presentation of report findings

In an online meeting on 2 June 2022, ORC and consultants presented their findings of the work they carried out that investigated the flooding and liquefaction hazards in Glenorchy Township. The consultants shared their findings and answered questions from the public.

You can view the recording of the online meeting below.

If you have questions about the presentation and the findings, please check out our FAQs, get in touch by email (headofthelake@orc.govt.nz) or feel free to contact the ORC Natural Hazards Manager, Jean-Luc Payan, on 0800 474 082.

 

 

We will consider the most frequent natural hazard events such as flooding, as well as the less frequent events such as major earthquakes, and how these hazard risks might change over time (100+ years).

The project area includes Glenorchy, Kinloch, and the surrounding rural areas of the Dart and Rees Valleys, Paradise, and Greenstone.

The project to develop the strategy is being led by the Otago Regional Council, in partnership with Queenstown Lakes District Council, Department of Conservation, Aukaha and Te Ao Marama, working together with the local community.

In addition, we have several consultants providing specialist inputs and advice for the project. These are:

  • Dr Paula Blackett from NIWA is providing expertise in implementing the adaptation pathways approach to natural hazards and risks.
  • Professor James Brasington from University of Canterbury is providing technical expertise in river morphology and floodplain hazards.
  • The Tonkin + Taylor hazards team are completing natural hazard risk assessments and providing technical advice.
  • Aukaha and Te Ao Marama are representing local iwi, Ngāi Tahu, and will provide cultural direction and understanding to ensure an appropriate cultural values statement is developed for the strategy.

 

Back to top
Online Maps & Data: