Tongariro Power Scheme

Monitoring sites

The Tongariro Power Scheme is located in the Central North Island and utilises water from 36 rivers and streams. The area is renowned for its dual status as the Tongariro National Park and World Heritage Site.

River conditions can change very quickly, so the data is updated on this website every 15 minutes. Please monitor the conditions regularly before embarking on any water-based activities. Flow data is also available from the Genesis flow phone 07 386 8113 or free phone number 0800 435 697 – (0800 4 flows).

If you have any questions or comments you can contact our Hydrology staff

Hydrology information for the Tongariro Power Scheme:

Supporting pest-free waterways
Supporting pest-free waterways


Rainfall information helps Genesis Energy predict river inflows.

The rainfall sites listed below cover a large geographical area from the flanks of Mt Ruapehu to the Kaimanawa Ranges.

Click on the site name to view recent rainfall trends.

This hydrology information has been compiled by Genesis Energy for general information purposes only. The data shows rainfall and river flow information, it is not a forecasting tool.  River users should check rainfall and river flow data, alongside weather forecasts to make a decision about whether it is safe to enter waterways. Genesis Energy does not warrant the accuracy or completeness of the information nor does it accept any liability or responsibility for any error, inaccuracy or omission in the information or for the use of such information by any person for any purpose.

If you have questions or comments you can contact Genesis Energy's Hydrology Staff.  


Water is utilised from rivers in the Tongariro, Whangaehu, Rangitikei and Whanganui catchments.

River flows can vary quickly and it is a good idea to check the weather forecast and assess flow conditions on the river before heading out. In some river systems, rainfall in headwater catchments will result in rapid increases in river levels downstream where there may be little rainfall.

Click on the site name to see recent flow trends.

Lake levels

Recreational releases