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Home >> Services >> Regional Services >> River levels and rainfall >> map >> River Level at Mercer

Monitoring sites:

River Level at Mercer

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The new Environmental Monitoring Hub is now available. Over the coming weeks, this page will be replaced by a page that allows you to find and update links to the new envirohub area.

While most of the monitoring sites record data every 5 minutes, data is only retrieved from the monitoring sites every 30 minutes.


  • The information on this page is provisional. For more detailed information contact Waikato Regional Council. Data is at NZ Standard Time (no allowance is made for daylight saving).

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A maximum of 60 days data is available.
If larger data sets are required please send a request to us via this form

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  Colour Samples Point Units Format Aggregate
719 Mercer : River Level m    Format:       Aggregate:   

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Interesting facts
Early warning:3.9 metres above river level reference
Continuous records began:1963 to 1987 and 2002 onwards
Catchment area:13701 square km
Highest recorded river level:5.689m on July 16th 1998
Lowest recorded river level:1.161m on May 3rd 2020
Site information
Site name:Ferry Road Bridge, Mercer on the Waikato River
Site number:1131.91
Map reference:NZTM:1781445 - 5871961
River level reference:Moturiki mean sea level datum