The underwater tower near Round Butte dam is now expected to be completed and operating by the end of 2009, ready for the 2010 fish migration period.

The massive tower, originally scheduled for completion in May 2009, was delayed when a portion of the 40-foot diameter steel conduit connecting the top and bottom structures broke off April 11 during assembly in Lake Billy Chinook.

All segments have been retrieved from the lake floor. Design modifications have been made, and construction crews have begun work on repairs and replacements. An analysis of the incident by PGE staff and independent structural experts is continuing to determine the exact cause.

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