2.5 CFS Modular Design

Widows Creek

Widows Creek

These multiple installations along Widows Creek diversions provided valuable knowledge on previous operational issues, and helped to refine the current screen design.

About

In April of 2009, FCA worked with the ODFW John Day Screen Shop and Aquatic Contracting to install three modular Farmers Screens on the three diversions on Widows Creek.

Because of a number of operational issues, this project has been one of FCA’s most valuable in terms of knowledge gained. Through three years of monitoring and on-site meetings, FCA, ODFW, and BPA were able to identify operational issues, their causes, and develop solutions to implement. The lessons learned at the Widows Creek sites have shaped not only the current screen design, but also FCA’s approach to developing projects.

To address these issues, ODFW, FCA, and BPA worked together to conduct training sessions and distribute operation manuals to all operators of the system, regularly monitor the system, and modify the screens with enhanced sediment management systems and overflow pipes. As a result of these efforts, screen dewatering and sediment build up are no longer occurring. The remaining challenges center on improper operation of the screens, with by-pass flows being blocked or restricted due to low stream flows.

FCA staff collecting data for monitoring.
Adjusting the head gate.
Proper depth over the screen is six inches (5/10ths) for this screen.
Les and Dan setting up to collect monitoring data.
Bypass water exiting to fish return pipe.
View to screen with new vegetation.
One of three Farmers Screens installed on Widows Creek in Oregon.
High flow with high turbidity passing by lower screen site head gate.
Backfilling around the screen.
Aquatic Contracting staff making mainline connection to the screen at the lower site.
Completed 2-section screen installed and running at the lower site.
Modular screen sections being lowered into place.
Modular screen sections easily being handled by a medium-sized excavator.
Modular screen sections arrive on site.
Previous screen box of the upper site.
Point of diversion at the middle site.
Point of diversion for the lower site.
  • Type:1.5 – 2.5 CFS Modular Design
  • Location:John Day, Oregon
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