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 Kakanui River at Mill Dam.

Kakanui River at Mill Dam

Alert Levels for this site

Alert Title Alert Details Alert Type Alert Threshold Level
Minimum flow Secondary permits cease from October to April Low level 0.3000
Minimum flow Primary permits cease from October to April Low level 0.2500
Minimum flow Supplementary permits (1st block) cease from October to April Low level 1.050
Flood First flood warning High level 200
Flood Second flood warning High level 400

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 Monday, 18 December 1989
Catchment Area 539km2
3 Highest Recorded Flows (cumecs) 548.7 (2002), 509.2 (1993), 494.5 (1994)
3 Lowest Recorded Flows (cumecs) 0.13 (1998), 0.17 (1999), 0.17 (2001)
Mean Annual Low Flow 0.409 m3/s
Lowest 7 Day Low Flow 0.213 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.

Back to top
Online Maps & Data: