McKenzie River

CASCADES VOLCANO OBSERVATORY WEEKLY UPDATE

Belknap shield volcanoBelknap shield volcano

Scuba diver's boat in Leaburg LakeScuba divers from Northwest Underwater Contractors did an underwater survey of the Leaburg Dam’s fish ladder last April that revealed erosion has undermined the structure’s concrete foundation.

LEABURG: Scuba divers inspecting Leaburg Dam’s left bank fish ladder had bad news after an underwater inspection of the structure last summer. They reported that some seventy feet of the concrete foundation had been undermined.

The fish ladder, constructed in the 1960’s, was poured directly on the river bottom, which is comprised of cobbles, sand, and gravel. Riprap was placed adjacent to the fish ladder in an effort to prevent erosion. Divers found the undermining ranged from four feet to more than fifteen horizontal feet, measured from the riverside foundation to the face of the fish ladder.

Construction Update – Week of January 7 - 11, 2013

Reroofing Goodpasture Bridge

 

Crews reroofed the structure in October of 2010.

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McKenzie River Reflections is the weekly newspaper serving Oregon's McKenzie River Valley. Available by mail for $23/yr in Lane County, $29/yr outside Lane. Digital subscriptions are $23/yr. Subscribe at: http://mckenzieriverreflectionsnewspaper.com/catalog/subscriptions-0. Purchase copies online at: http://mckenzieriverreflectionsnewspaper.com/catalog/back-issues-0. Read about area communities including Cedar Flat, Walterville, Camp Creek, Leaburg, Vida, Nimrod, Finn Rock, Blue River, Rainbow and McKenzie Bridge.