The AquaDams® in this installation were started from opposite banks and almost
meet in the middle. A 30' long open-ended AquaDam® is placed inside both collars
and coupled to the end of both installed AquaDams®. This will create an intentional
weak point in the cofferdam so that if water levels should unexpectedly rise, this
point will wash out and allow the water to equalize on both sides of the AquaDams®,
hopefully preventing the remaining units from washing out.