We are switching to a new environmental data portal. This portal will give you access to even more data for this site with easy-to-use interactive maps.

Start using it now to see the latest data for Wairuna at Millar Road.

Wairuna at Millar Road

Alert Levels for this site

Alert Title Alert Details Alert Type Alert Threshold Level
High flow High flow High level 20.00

Last 7 days flow in cumecs

Last 180 days flow in cumecs

Our new Environmental Data Portal offers you a much better experience while viewing the most up-to-date environmental data, including flood warnings, low flows and water quality data. This data is a live copy of the data held in the Council’s environmental monitoring database.

The portal will allow you to view all historic data available for a site, plus you can download quality assured data. The maps also provide better context and are easier to navigate. 

Visit our Environmental Data Portal.


Site information 

Start of Record Sunday, 7 April 1996
Catchment Area 300km2
3 Highest Recorded Flows (cumecs) 380 (2002), 173 (2000), 115 (2005)
3 Lowest Recorded Flows (cumecs) 0.17 (1999), 0.24 (2004), 0.38 (1997)
Mean Annual Low Flow 0.593 m3/s
Lowest 7 Day Low Flow 0.324 m3/s
End of Calculation Period Monday, 1 January 2007

Information displayed on this web site is provisional and has not been checked using the Council’s Quality Assurance procedures. The Otago Regional Council, Contact Energy, Trustpower, Environment Canterbury, Environment Southland and NIWA do not make any warranty, expressed or implied or assume legal liability or responsibility whatsoever for the accuracy or completeness of this information nor does it make any representation whatsoever that the information is fit for any particular purpose.

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