Leaburg Dam

Leaburg Dam construction

Pile drivers are part of the equipment being used to bolster the base of a concrete fish ladder at the Leaburg Dam.

LEABURG: A Eugene Water & Electric Board contractor mobilized equipment in late February to begin a project to reinforce the fish ladder on the south side of Leaburg Dam on the McKenzie River. The area beneath the structure’s concrete foundation has been scoured out and eroded since it was built in the late 1960s, requiring substantial reinforcement to prevent the ladder from tipping.

 

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.

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.