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Repairs to the Walterville Canal Rock Drop Diversion Structures
Cheri Wilson
Associate Civil Engineer, Generation
Eugene Water & Electric Board
Thursday, December 15th, 6:00 - 8:00 p.m.
Red Lion Hotel Eugene
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About the Topic
The Walterville Canal was constructed in 1911 as a run-of-the-river hydroelectric canal to provide power to the City of Eugene. As part of relicensing, EWEB was permitted to construct the first of three rock drop structures (chevrons) in the north channel of the McKenzie in 2003; this allowed them to divert their full water right of 2,500 cubic feet per second into the Walterville Canal. In 2007 three additional rock drop structures were constructed including a below grade rock sill and a barb. The intent of the additional structures is to bring stability to the reach and prevent further headcount migration.
After unusually high flows over the winter of 2008-09, it was found that significant damage had occurred at the structures and major repairs would be necessary. Over the course of a week approximately 550 yards of large rock material was mobilized and nine of the fourteen structures were repaired. Because of the nature of the design and material used in the construction of the chevrons they continue to be a challenge to maintain. EWEB has since completed repairs in 2011 and is working with a consultant for a permanent solution to bring greater stability to the reach.
Currently Cheri works for the Eugene Water & Electric Board as an Associate Civil Engineer in the Generation Engineering Department and has been with EWEB since 2007. She has a Bachelors' Degree in Environmental Engineering from Oregon State University. Cheri's work is primarily focused on maintaining, upgrading and improving aging civil structures on the Walterville and Leaburg Canal Hydroprojects on the lower McKenzie River.
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5:45 p.m.
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Registration Table Opens
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6:00 p.m.
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Meet-and-Greet Networking
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6:30 p.m.
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Dinner and Announcements
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7:00 p.m.
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Keynote Presentation (1 PDU)
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8:00 p.m.
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Meeting Close |
Location and Parking
Eugene PMI's monthly dinner meetings are held at Red Lion Hotel, 205 Coburg Road, Eugene, OR 97401. Parking is free.
Cancellations
Contact VP Programs (VPPrograms@EugenePMI.org). No refunds later than 48 hours in advance of the meeting.
Cost
Registration: $20
Note: At 5PM Monday before the meeting, online registration closes.
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PDUsKeynote Presentation - 1 PDU Instructions on reporting PDUs here. MenuA buffet-style dinner with water, coffee, tea, and dessert is prepared by Red Lion Hotel. If you require vegetarian, vegan, or other dietary requirements, please specify in the registration form or contact the VP Programs ( VPPrograms@EugenePMI.org) 48 hours in advance of the meeting. | |
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