Tag Archives: Urban Runoff Mortality Syndrome

In the Duwamish Watershed, Communities Respond as Coho Salmon Face a New Threat

by Tushar Khurana


Every year, salmon journey from the open waters of the North Pacific, pass through estuaries along the coast, and swim upriver to spawn in the freshwater streams and creeks in which they were born. Yet across the western coast of North America, coho salmon are dying in large numbers as they return to urban watersheds. In West Seattle, a team of citizen scientists are surveying salmon to understand how many are affected.

Since 2015, small teams of volunteers have gone out every day in the fall to document returning salmon along a quarter mile stretch of Longfellow Creek.

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