some of those are going to begin to move. "Muir does reforestation work for Starker Forests, a private timber company that manages about 60,000 acres in the Coast Range. In the old days, he says, timber managers used to send crews out to cut up and remove big logs that fell into streams it was considered the right thing to do, not only to eliminate flood hazards but also to make it easier for migrating fish to move up and down the waterway.
Muir says he gets all that. But what about the risks posed by intentionally placing large logs in a stream like Woods Creek, where dozens of houses line the banks and where heavy rains can funnel down the slopes of Marys Peak to create periodic flash floods?Three times in his 40 years on the creek, Muir has had to remove large logs that wedged themselves in the channel Adidas Originals Gazelle Indoor Navy
wood and leaves supply nutrients to the insects and other invertebrates the fish feed on. And logjams provide an important benefit for humans, as well: In a flood, they can help dissipate the force of the water rushing downstream, diverting some of the excess onto natural floodplains and protecting the banks from excessive erosion. They can also capture some of the floating debris, such as tree trunks and large limbs, that might otherwise smash bridge abutments or clog culverts.
o replenish the depleted fish runs. But he worries some of that work could have unintended consequences. Over the last several years, the Marys River Watershed Council has worked with many of Muir's neighbors to install some three dozen artificial logjams in a six mile stretch, part of an effort to restore more natural conditions and improve habitat for native fish. Muir wonders what might happen if some of those logs broke loose and floated downstream to lodge in the culvert by his place. "The logjams they're putting in now have blocked debris coming down the stream," he said. "But how long before they give way? At a certain point, Adidas Originals Gazelle Og Solar Blue
"Designed to lastSteve Trask, a restoration contractor who designed and installed the large wood structures on Woods Creek and hundreds of others in watersheds throughout the Willamette Valley and up and down the Oregon coast refused to be in.
by his place, including one in 1995 that blocked the mouth of the culvert and threatened to flood him out. "The flood was up to the deck," he recalled. "It was six inches from being in the house. "That was before the watershed council started installing artificial logjams upstream for fish restoration. "I'm not criticizing," Muir said. "But I have a question: Are you sure you want to keep putting stuff in there? I understand what they're doing, but I don't know what Adidas Gazelle Mid Black White the consequences are going to be.
But that rarely happens anymore. About 30 years ago, scientists realized that natural logjams actually improve conditions for fish in a variety of ways. By slowing down the current, logs in the stream trap silt and gravel for spawning beds and create slackwater pools where fish can rest. They push water into side channels during high flow periods, providing additional habitat. Rotting Adidas Gazelle Olive Green
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