- Baffled AquaDam Pressure Test
Carlotta, CA (2003)
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This open-ended baffled 3' high AquaDam® is about to undergo
a field test to see how it reacts when the maximum water level
is exceeded. The AquaDam® is started well up the bank to ensure
that it will be able to reach its full height. The worker holds
it back as it fills to maintain interior pressure.
As the AquaDam® fills, the pressure builds, and a second worker
is needed. They stop the dam just before it cuts off the flow.
This is important, because if the AquaDam® starts to build water pressure
behind it before it is done filling then it could be pushed downstream.
The baffle provides additional support.
Once the AquaDam® has plenty of pressure inside, the workers allow
it to finish unrolling. A small 1' high AquaDam® is placed underneath
the larger unit to improve the seal with the ground. Almost no water
can seep underneath.
A view of the seam where the interior baffle is attached to the
outside tube, splitting it into two sections. This seam is reinforced
on larger AquaDams®. The space above the seam allows for a pipe to be inserted
to create a strong tie-off point. Using a rope, this point can be tied
back to a tree along the bank, allowing for more stability.