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On June 20, 2008, members of Battle Creek Watershed Conservancy and Greater Battle Creek Watershed Working Group toured construction of the $10 million fish barrier weir and ladder modification project underway at Coleman National Fish Hatchery in Anderson.

Scott Hamelberg, Manager of Coleman NFH, explained that the purpose of the barrier weir is to divert the fall run of Chinook salmon into the hatchery rather than allowing them to pass upstream. The new ladder will pass 300 CFS (cubic feet per second) as opposed to the original ladder which passed only 35 CFS. Hamelberg told the group that Battle Creek will overflow its banks at 3,000 CFS and that after a rain on snow event one spring it reached 21,000 CFS.

The project is expected to be completed ahead of schedule, before the return of fall run Chinook in October, 2008.


The group stands in the middle of Battle Creek. A 150-foot section of
the stream was temporarily diverted during construction

Scott Hamelberg points out design elements in the middle ladder.
A vault behind the window will enable video monitoring of fish


View of the site from above, looking upstream
The diverted stream re-enters Battle Creek below the construction site
Coleman NFH Barrier Weir Modification Evaluation Plan Overview
Fish Rescue at the Barrier Weir

For progress updates on the Coleman NFH Fish Barrier Weir and Ladder Modification Project,
please refer to documents on the
Greater Battle Creek Watershed Working Group page.

Battle Creek
Watershed Conservancy
P.O. Box 606, Manton, CA 96059


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