Charlotte Milne

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Part of the Fraser River in British Columbia between Hope and Agassiz, in July 2020. It is estimated that more than half of the gravel sections along the river have been hardened with riprap. THE CANADIAN PRESS/Darryl Dyck

Overuse of riprap to prevent riverbank erosion is harming B.C. rivers

Charlotte Milne, University of British Columbia

Riprap can bury the spawning habitats of fish, increase river temperatures and exacerbate erosion elsewhere. There are alternative ways to stabilize riverbanks.

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