
This photo was taken from the opposite end of the AquaDam cofferdam system. The final several hundred feet of the barrier consisted of a longer, 3ft tall AquaDam. Notice the sticks and brush on the right? Workers took great care to clear all branches, sharp objects, and even a barbed wire fence before installation to protect the AquaDams from damage. Excellent work by the entire crew!

Here we can see the completed installation of the AquaDam cofferdam system. Notice how the water depth on the de-watered side (right) has noticeably lowered. This effect achieved solely by pumping water into the AquaDams.

The AquaDams have reached the deepest portion of the swamp. Because equipment was not permitted in the water until after de-watering, and access was only available from one side, each unit was manually unloaded from the trailer and floated into position using manpower. AquaDams are shipped rolled up like a carpet on a wooden beam, wrapped in protective covering, and equipped with lifting ropes or straps for easier handling.

The open end and fill-tubes of this AquaDam were pulled back into the tree line and securely tied off to hold them in place during filling. The deepest water was located in the center of the work area within the swamp, requiring the use of larger AquaDams. Fortunately, Aqua Dam Inc. was well-prepared with additional units on hand.

Several hundred linear feet of 4ft and 3ft tall AquaDams were used to block water flow through a swamp, allowing for the installation of a new gas pipeline in a dry environment. The flat surrounding landscape made it challenging to locate an elevated starting bank to launch the AquaDams. For a successful installation of a single closed end (SCE) AquaDam, it is essential to begin on a starting bank where the open end is positioned at a higher elevation than the AquaDam’s full height. The open end and fill-tubes must remain elevated above the dam’s intended height along its entire path. The AquaDam will only reach its maximum height at the lowest point of that path.
Multiple AquaDams, Williams Transco Gas Company, Pipeline Installation, Line Configuration