Project Description

This project removed an old wood stop log spillway system and upgraded it to hydraulically controlled Obermeyer sluice gates. Major hydro-demo on the sloped spillway system was required to provide channels for the control lines, both horizontal and vertical. We had to build extensive heavy-duty scaffolding to access the demo and control installation areas. This scaffolding provided worker access, the hydro-demo machine, and a landing spot for copious amounts of concrete deposits for removal. An added scope to the project was the construction of the control building and equipment. A major flooding event occurred during this project’s final stages, which not only shut it down for several months but also caused extensive damage to the scaffolding.

Project Team and Stats

  • Location: Oregon City, OR
  • Start Date: July 2016
  • Completion Date: Weather Delay
  • Owner: Portland General Electric

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