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Reclamation to repair stilling basin concrete floor at Jamestown Dam

The Bureau of Reclamation will begin repairs on the concrete floor of the Jamestown Dam outlet works stilling basin beginning Sept. 1.

JSSP Jamestown News
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JAMESTOWN — The Bureau of Reclamation will begin repairs on the concrete floor of the Jamestown Dam outlet works stilling basin beginning Sept. 1.

During the repair work, no releases will be made from the dam.

The estimated time to complete the repair work is approximately two months, the bureau said. Portions of the area may be closed to public access to ensure the safety of the workers and the public.

In anticipation to the start date, the reservoir’s elevation will be lowered from 1,431 feet above mean sea level to 1,429.8 feet. AMSL.

The main components of the work will include constructing a cofferdam downstream of the outlet works to unwater the stilling basin, removing the damage done to existing concrete floor surface and placing new reinforced concrete, the bureau said.

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Removal of the cofferdam is anticipated for Nov. 1 after which dam releases will resume as normal.

For more information, contact Nathan Kraft at (701) 221-1254.

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