On the Elwha, a New Life When the Dam Breaks
A huge dam-removal project will reveal sacred Native American lands that have been flooded for a century
- By Abigail Tucker
- Smithsonian.com, September 15, 2011, Subscribe
(Page 2 of 5)
We passed over the two horseshoe-shaped dams and their reservoirs, 267-acre Lake Aldwell and, above it, 415-acre Lake Mills. Heaps of timber, which from such a distance looked like neat little stacks of matchsticks, clogged the dam in spots, and I could see the giant clots of sediment behind the dam—more than 20 million cubic yards of hoarded sand that belongs downriver.
Above the dams, the Elwha narrowed and steepened; the surface was scuffed with rapids in places, and rafters floated in inner tubes tiny as Cheerios. The snow-decked mountains we skirted were blotchy with the shadows of clouds. According to Elwha mythology, a storm god called the Thunderbird helps chase the salmon upriver, and indeed some of the highest peaks were scorched where lightning had struck again and again.
Waterfalls charged down the mountainsides and tributaries pumped frantically into the swerving, frenetic Elwha. Here and there were exposed gravel bars and other spots where the river had changed its mind over the years and sashayed away in another direction.
But despite its spirited appearance, the Elwha is barely alive. Only the five miles of habitat below the dams is currently accessible to salmon. Historically the river produced some 400,000 wild adult salmon annually; today it’s closer to 3,000.
The exile of the salmon has meant the banishment of other animals that otherwise would feast on the fish. The area’s populations of bobcats, bear, mink and river otter have likely declined. In similar ecosystems in nearby Canada, there are “bald eagles like mosquitoes,” Young says. But they appear to be much more rare on the Elwha. Since salmon carcasses aren’t fertilizing riverside vegetation with nutrients brought upstream from the ocean, even the cedars starve.
Pat Crain, a park fisheries biologist, snorkeled portions of the Elwha a few years ago, drifting “like a log” down the river and tallying all the living creatures he encountered by making hash marks on a piece of PVC pipe strapped to his arm. He glimpsed thousands of rainbow trout above the dams, but “there were long stretches where we saw virtually nothing.” Just mile after mile of perfect, deserted salmon habitat.
Yet the one snippet of river that the fish can still access—the five miles below the first dam— is in the worst shape of all. “Down there is terrible habitat,” Crain said, “but that’s where the fish are trying to live.”
Because the river water heats up in the reservoirs before it’s released, temperatures downstream are too warm for the salmon; the heat reduces the water’s oxygen stores and spurs the spread of disease. In the early 1990s, for instance, 70 percent of the river’s chinook died before spawning, and the run never fully recovered. Also, because almost all the timber gets caught behind the dams, the lower Elwha has few logjams to create the pools and channels that shelter juvenile fish. In recent years, the tribe has begun constructing artificial logjams.
The worst problem downstream, though, is the lack of usable sediment. Salmon need gravel of a certain size to bury their eggs. Normally, eroded particles from the Olympic Mountains, washed downriver, would replenish the gravel supply, which the Elwha continuously pushes out to sea. But the dams block the sediment from reaching the lower river, where the bottom now is just boulders in places.
The dearth of new sand and gravel also degrades the delta and beaches, which are composed almost entirely of large cobbles now. “We used to have shellfish and clams on our beaches,” Robert Elofson, the tribe’s river restoration director, told me. “Had a geoduck bed out there, but the quality and size of the bed have been impacted. Eelgrass and kelp are impacted too.”
Amazingly, DNA tests have shown that descendants of nearly all the Elwha’s species of wild salmon may still inhabit the river, including chinook and king salmon, coho, pink and chum. The only ones that have likely been eliminated are the native sockeye, which spawned exclusively in a natural lake above the dams. “When the dams went in, their life history trajectory was immediately cut off,” says Mike McHenry, the tribe’s habitat program manager. The other fish still come back to spawn in small numbers, which should grow significantly when the dams are gone. Today only about 200 pink salmon breed in the river, for instance; in the future, park fisheries biologists expect roughly 100,000.
Our propeller plane was now bobbing and dipping in the thick of the mountains. Below us the headwaters of the Elwha frothed white with effort. To get this far on foot entails a grueling three-day backpacking trip; I tried to imagine the willpower necessary to arrive as chinook once did, by water, battling for dozens of miles against rapids and a ripping current.
Suddenly the misty gray ceiling above us lifted, and we were in a cathedral dome of clouds. The pilot mumbled into his mouthpiece and pointed ahead, and I saw a hammock of pure whiteness nestled between mountains. The Snowfinger.
***
People have been living near the Elwha for thousands of years. For much of their history, the Klallam people (the Lower Elwha Klallam are one of three remaining populations of this larger group) wore cedar bark clothes, dabbed their faces with red ocher for spiritual protection and shook deafening deer hoof rattles during grand feasts. The salmon migrations were always at the heart of the culture. In an annual ceremony, the head and bones of the first salmon of the year were carefully arrayed on a cedar mat and set adrift on the Elwha, which would carry the body back out to sea. The people hoped this initial fish would then tell its fellows how honorably it had been treated, so they, too, would return to their birth river.
The Klallams’ first contact with Europeans came in July of 1790, when a Spanish vessel searching for the Northwest Passage encountered two canoes. The sailors traded bits of iron for fresh salmon berries, the Spanish commander wrote in his journal, and the Indians filled the visitors’ empty water casks “with delicious water taken from a beautiful stream,” the Elwha.
It wasn’t long before the usual ruin befell the Klallam tribes, as Lynda Mapes recalls in Breaking Ground, her powerful history of the Elwha people. Smallpox killed some 80 percent of Pacific Northwest Indians within 100 years of contact, and archaeologists recently found what are likely smallpox graves at Tse-whit-zen, a major Klallam village near the Elwha River’s mouth.
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