Undoing Dams, Animals Pitch In

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Since 2014, Washington’s Elwha River has flowed freely through what once was Lake Mills and the Glines Canyon Dam. But the site still leaves a barren scar in Olympic National Park. Now, a human- and bird-led effort is turning it green again. Photo: Elaine Thompson/AP

Conservation is sometimes in the hands of animals, as this story in the current Audubon magazine illustrates:

Birds Are Helping to Plant an Entire Lost Landscape in Olympic National Park

After the largest dam removal in U.S. history, scientists, Native Americans, and wild animals are working together to restore the heart of the Elwha.

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The Elwha Valley and Glines Canyon Dam prior to demolition. Photo: Elaine Thompson/AP

It’s a scorching August day in the Elwha Valley, and it only feels bleaker as we peer into the 200-foot void of Glines Canyon Dam. A sputtering trail of water marks the concrete lip where, for nearly a century, two hulking braces trapped logs, rocks, and sediments as they washed down from the mountains of northern Washington, forming a reservoir that was six times deeper than a competition-diving pool. At its height, the dam churned out 13.3 megawatts of hydroelectricity, enough to power 14,000 homes and a local paper mill. But it also seriously altered the Elwha River’s ecology, along with that of surrounding Olympic National Park. Endangered chinook salmon were cut off from their spawning sites; fish-eating birds and otters suffered; and estuaries became more brackish and shallow. Finally, in 1992, the U.S. government issued the order to destroy Glines Canyon Dam and the nearby Elwha Dam. Yet it wasn’t until two decades later when the water was completely freed. Continue reading

Redemption, Dammed Rivers Edition

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It’s been only two years since the removal of the last of the dams that obstructed the Elwha River, in Washington State, but already species are returning. Photograph Courtesy E. Tammy Kim

Among our favorite story types, the story of ecological recovery, which is to say of redemption, the following is a welcome addition to the files of 2016:

NEW LIFE ALONG WASHINGTON STATE’S ELWHA RIVER

By E. Tammy Kim

…Shaffer and her colleagues have sampled the Elwha’s nearshore region, where the river meets the ocean, once or twice a month since 2006. August, of course, is an ideal time; when you go in January, McBride said, “your fingers freeze, so you just put ’em under your armpits.” The work of the C.W.I. now seems particularly vital, because, for the first time in several generations, the forty-five-mile-long Elwha is a living river, end to end. Between 2011 and 2014, two large, century-old hydroelectric dams were demolished as part of a federal recovery effort. Continue reading