This is the completed water-filled cofferdam system. The seal of the AquaDam® is much better than the seal provided by the original concrete dam. This is demonstrated by the fact that the water is draining away.

AquaDam®

These were the boards of the original dam. Water levels were so low behind the AquaDam® that water needed to be pumped in to dry up the work area.

Downstream, a 4' high x 60' long AquaDam® was installed. Notice how high up on the bank it was started.