The Elwha dams are gone and chinook are surging back, but why are so few reaching the upper river? – Seattle Times


Good update on the return of the river.


They were the king of kings in Puget Sound, the biggest chinook of them all, strong enough to muscle up the falls at the Goblin Gates and power on all the way through nearly 4 miles of chutes and falls in the Grand Canyon of the Elwha….Scientists have been tracking nature’s response. Some of what they are finding is surprising, even to them. Summer steelhead, nearly extinct in the Elwha, have come booming back to the river, all on their own. Once locked up behind the dams, rainbow trout are re-expressing their ability to go to sea as steelhead. Adult chinook returns to the river since dam removal are the highest since the late 1980s, with more than 7,600 estimated in the 2019 count. While that’s still a modest number, the Elwha represents one of the only watersheds in Puget Sound with such an uptick in population, said Sam Brenkman, chief fisheries biologist for the Olympic National Park, in an email. Colonization of the lower and middle river has been steady. But fewer chinook are reaching the deliciously cold, uppermost reaches of the watershed. Why? It’s a puzzle scientists are working on. Lynda Mapes reports. (Seattle Times)

The Elwha dams are gone and chinook are surging back, but why are so few reaching the upper river?

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