1.) Eight AquaDams were purchased for this job, three single closed end (SCE) and five double closed end (DCE): two 16ft tall by 285ft long DCE units, two 16ft tall by 250ft long SCE units, an 8ft tall by 150ft long DCE unit, an 8ft tall by 100ft long DCE unit, an 8ft tall by 125ft long DCE unit, and a 6ft tall by 250ft long SCE unit. All these AquaDams were supplied with connection collars.

2.) Here we can see the work area has been separated from the main river by the AquaDam cofferdam system. The main cofferdam system consisted of four 16ft tall AquaDams all together using connection collars. 8ft tall AquaDams were used to support the inner perimeter of the main AquaDams. This job was in Hampton Virginia in the Northwest Branch Back River, just South of Tabbs Point.

3.) AquaDams are shipped rolled-up like a carpet roll on a wooden beam, wrapped in a protective covering, and have lifting ropes/straps. An empty AquaDam is less dense than water and it can be floated over to the area needed.

4.) Workers tied ropes to one of the 8f tall DCE AquaDams, prior to filling it, so they could position the unit where it was needed. The fill-tubes for this AquaDam can be seen laid towards the two workers sitting on the roll end. The fill-tubes for a DCE AquaDam are on top of the body of the AquaDam allowing the unit to be free standing and not require a starting bank.

5.) Standing on the Southern bank, looking North towards Tabbs Point.

6.) Workers have made one of the 16ft tall SCE AquaDam connections. The fill-tubes for this SCE unit have been run through the collar of the other AquaDam. The starting point (open end) of this SCE AquaDam has been laid on top of and bloused out across the closed end of the other AquaDam, inside the collar. The open end and fill-tubes of a SCE AquaDam must be elevated higher than the full height of dam along its given path. An AquaDam will only reach its full height at the lowest elevation along its given path.

7.) The fourth 16ft tall AquaDam has been installed and is now filling. Pumping power will determine the time it takes to install an AquaDam. Both fill-tubes should be filled with equal or similar pumping power. Here there are three 3-inch pumps adding water to each fill-tube.

8.) Looking at the ending bank of the 16ft tall AquaDam cofferdam system and Tabbs Point, upstream.

9.) Looking East towards where Back River empties into the Atlantic Ocean, downstream.

10.) Here we can see seven out of the eight AquaDams installed and working great.

11.) A close-up photo of the downstream end of the AquaDams installed and full of water.

12.) A close-up photo of the upstream end of the AquaDams installed and full of water. This end does not have a support AquaDam at the connection here.

13.) A photo looking North, the 6ft tall 250ft long SCE AquaDam can barely be seen in the upper right of the photo.