For the installation of a gas pipeline under a creek in Soda Springs, Indiana, an AquaDam cofferdam system was installed with a flume pipe diversion, to convey the creek water through. A smaller AquaDam was laid under the fume pipes first.

A larger AquaDam was installed over the smaller dam and the flume pipes. Workers filled the larger AquaDam up first with water to dam off the creek and later filled the smaller one to make a better seal underneath the flume pipes.

The larger AquaDam must be installed to pass over each culvert used as a flume. It is recommended to space the pipe minimally at the diameter of the flume pipe for optimal performance. The larger AquaDam should be designed to handle a water depth of at least two times the diameter of the flume pipe on the upstream end to ensure maximum flow through the pipe.

Ropes have been anchored at shore, run under the AquaDam, over top of the roll, and back to workers who control the roll while the dam is being filled with water. The ropes are used to hold back the roll, while the unrolled length fills and gains head above the surrounding water. It is important to note that the upstream water depth will increase as the waterway is dammed off.

The AquaDam cofferdam system has been installed and the work area is isolated. Notice the upstream pool on the right side of this photo.

Here we can see the downstream end of the AquaDam cofferdam system. The hay bail tub was to treat the dirty water being removed from the work area.

Non-abrasive fill was placed up against the AquaDam and around the flume pipes for additional support at the upstream end.

Fantastic job AquaDam!