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Part 4: Back In Lake Washington, Chinook Stop Feeding, Rely On Smells To Find Way Home

(Michael Holden/Flickr)

Editor's Note: Fifteen years ago, Puget Sound salmon were listed under the Endangered Species Act. Despite the billions of dollars spent on recovery since, the results remain mixed. Some runs are seeing record returns while others are facing one of their worst years ever.

To learn more about the challenges of salmon recovery, this series follows one Chinook run from the open ocean to Puget Sound, through the Ballard Locks, past Renton and finally home to native spawning grounds on the Cedar River.

One of the most intriguing questions about Lake Washington chinook is the mystery of how they survived after we replumbed the region with the construction of the Ship Canal, which was completed in 1916. It dropped the level of the lake by nearly 10 feet and cut it off from what used to be its southern outlet, the Green River.

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Bellamy Pailthorp covers the environment for KNKX with an emphasis on climate justice, human health and food sovereignty. She enjoys reporting about how we will power our future while maintaining healthy cultures and livable cities. Story tips can be sent to