Otago’s Water Plan is being reviewed by ORC. We are taking a staged approach to the review based on 'mountains-to-sea' catchment areas called Freshwater Management Units (FMUs). In Otago we have set five FMUs: Clutha/Mata-Au, Taieri, North Otago, Dunedin Coastal and Catlins. Due to the large size of the Clutha/Mata-Au FMU, it has been divided into five sub-areas, called rohe, for a more tailored water management approach in these areas. One of these is the Dunstan Rohe. 




The Dunstan Rohe covers around 5,000 square kilometres and is home to more than 15,000 people. It is a beautiful area, with some of Otago’s most beloved waterways: Lake Dunstan, the Arrow River and the Cardrona River.

As we go through this new FMU process, there may be some rules set for the Dunstan Rohe that differ from other areas. This will be done in consultation with the local community to ensure that waterway management reflects local values and objectives.

Information and resources

We carry out monthly water quality testing as part of our State of the Environment (SOE) testing. Please note that SOE reports below are based on five years of data.

Read more about water quality in the Dunstan Rohe at the Land, Air, Water Aotearoa website, including the "Can I swim here?" section which is updated weekly in summer months, at the links below:

Sign-up for our monthly newsletter On-Stream. Read previous editions here.


Catchment groups

Name: Julie Perry
Phone number: 027 4989 698
Email: julie@waiwanaka.nz
Role: Manager
Organisation: WAI Wānaka (Upper Clutha Lakes Trust)
Website: https://www.waiwanaka.nz/
Facebook: https://www.facebook.com/WAIWanaka/

Consultation - have your say

What do you want for the future of waterways in the Dunstan Rohe?

Under a new requirement introduced in the government’s Essential Freshwater package, ORC’s Regional Policy Statement must include freshwater objectives developed with iwi and the wider community for each freshwater management unit and rohe.

What do you value most about the lakes, rivers, groundwater, streams or wetlands in the Dunstan FMU?

Is it being able to go fishing or swimming? Or do you rely on freshwater for your crops or farm animals? Maybe you want to see native animals and plants living in the water? What’s your vision for your waterways?

Come along and tell us at: 

  • Cromwell on 3 November at 12.30-2.00pm, Cromwell Presbyterian Centre, Elspeth St, Cromwell
  • Arrowtown on 26 November at 12.30-2.00pm, Arrowtown Bowling Club, 6 Hertford St, Arrowtown

Or go online here.

ORC key contacts

Name: Bruce Monaghan
Phone number: 0800 474 082
Email: rural@orc.govt.nz
Role: Rural Liaison and Support Advisor (Central Otago)
Organisation: Otago Regional Council

ORC Pollution Hotline

If you observe pollution to water, air or land anywhere in Otago, please call the Pollution Hotline - it's 24/7.

Phone: 0800 800 033