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.
Te whakamahi i tēnei tūemi
J Greenwood Photography
Photograph by John Greenwood
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