Umpqua River, OR, 2010
Stream diversion and dewatering

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Umpqua River, Oregon. The concrete water intake pipe needed to be dewatered around, to allow work to be done. Umpqua River, OR, 2010
This is the area that must be cordoned off from the rest of the river. Umpqua River, OR, 2010
AquaDam Umpqua River, OR, 2010
First, a 3' high AquaDam is installed upstream, to help move the majority of the rivers flow to the opposite side from the intended work area. Umpqua River, OR, 2010
(2) 3" portable gas-powered water pumps are pumping water from the river into the AquaDam, building head and forcing the bag to unroll slowly. Umpqua River, OR, 2010
A turn is introduced midway across the river channel. It is important that the workers only unroll as much AquaDam as they can while still keeping a meaningful amount of head (portion of AquaDam above water). This ensures that the AquaDam does not shift during installation. Umpqua River, OR, 2010
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