1.) Looking upstream at the fish ladder that needed repairs in Yakima River North of Ellensburg Washington.

2.) Looking downstream at the weir with the fish ladder on the right, prior to installing the AquaDams.

3.) The first single closed end (SCE) AquaDam has been launched from its starting bank. A starting bank is needed for a SCE AquaDam to keep the starting point (open end) elevated above the full height of the top of the dam. 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.

4.) A SCE AquaDam should be launched from its starting bank at a perpendicular angle. Ropes have been anchored at shore, run under the AquaDam, around over top of the roll, and back to workers to control the roll while the dam is being filled with water.

5.) The second SCE AquaDam has been installed just downstream of the first one. The starting bank for this unit was barely tall enough. Notice the top of the second dam is almost the same elevation as the bank, where the workers are. Large sandbags (super sacks) have been laid up against the two AquaDams to add additional support.

6.) Looking upstream, after the first two SCE AquaDams have been installed. Most of the river’s water has been diverted towards the opposite bank.

7.) Looking downstream, after the first two SCE AquaDams have been installed. Notice the upper lip of the weir?

8.) A photo looking upstream from the opposite bank. Here we can see that the two first AquaDams have prevented the water from rolling over the weir at the far left.

9.) Workers have setup the third SCE AquaDam at its starting bank. Turbulent flow can be seen on the left, the white capping water.

10.) Workers launch the third SCE AquaDam. Several ropes were used to help control the AquaDam, while it is filled with water. AquaDams are made of light weight flexible materials and will float when empty in deep enough water.

11.) The third SCE AquaDam has been completely unrolled and will now need to continue to fill. The white caps can really be seen here. Workers needed to maintain enough head in the AquaDam (while it was unrolling) to prevent the turbulent flow from diverting the dam’s path.

12.) An excavator carefully holds the side of the third AquaDam, while a crane drops in a super sack.

13.) The third SCE AquaDam has gained enough head that workers need to make modifications to the original starting bank.

14.) Workers have elevated the fill-tubes and discharge hoses so that the SCE AquaDam can finish filling and reach its full height.

15.) A rock was wrapped with the outer sleeve material of the open end and tied with a rope, to get a better grip at keeping the AquaDam in place as it is filled.

16.) All three SCE AquaDams installed and working great. Good job AquaDam!