Story: Water quality

Waipā and Waikato rivers meet

Waipā and Waikato rivers meet

The Waipā River (right) joins the Waikato River at Ngāruawāhia, laden with sediment after record rainfall in July 1998. The amount of soil erosion in a catchment is reflected in the sediment content of the river water. Sediment may come from hill slopes or from eroding banks.

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J Greenwood Photography
Photograph by John Greenwood

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How to cite this page:

Mike Scarsbrook and Kit Rutherford, 'Water quality - Water quality in New Zealand', Te Ara - the Encyclopedia of New Zealand, (accessed 26 March 2023)

Story by Mike Scarsbrook and Kit Rutherford, published 24 Nov 2008, updated 18 Jul 2016