Restoring streams to help the Coho Salmon

Restoring Coho Salmon habitat

The Coho Salmon (Oncorhynchus kisutch), one of seven species of Pacific salmon, spawns in small tributary streams on Canada’s Pacific coast. These streams are vulnerable to damage from urbanisation, agricultural activity, logging and/or hydroelectric development. It is largely because of this vulnerability and over-fishing that the Coho has become recognised as a threatened species in both Canada and the USA.

A Rocha, with funding from the Pacific Salmon Foundation (PSF) and in partnership with other conservation organisations and Fisheries and Oceans Canada, has since 2003 initiated stream and wetland restoration projects in the Little Campbell River Watershed, along the Canada/US border close to Vancouver. The restoration and enhancement of these tributaries are an important element in the conservation of this species.

In three separate projects, river systems have been restored and enhanced in ways that benefit the Coho Salmon. Invasive species have been removed, while native trees, shrubs and plants have been replanted. Channels have been created or cleared, with spawning gravel placed in appropriate sections, and pool/riffle habitat areas created.

Each of these three projects continues to be monitored by A Rocha. Where possible, the use of these sites by birds, amphibians and Coho Salmon will continue to be monitored through various surveys. Invasive plants will be kept in check and additional native plants may be planted as needed.

Project leader: Glen Carlson

Partners: Langley Environmental Partners Society, Pacific Salmon Foundation, Little Campbell Watershed Society, Fisheries and Oceans Canada