Fill material is placed behind the AquaDam® to help reinforce it. Most of it was soft, squishy, gray mud, perhaps the least stable fill material possible. While this dam had very little pressure on it, the choice of fill material would later become critical.

Notice the dark, black, bay mud placed on the right side of the AquaDam®.

This AquaDam® had almost no leakage, even around the pipe. This was because a small 30" high AquaDam® was placed under it (but over the pipe) before it unrolled. When the large AquaDam® was full, water was pumped into the small dam to create a more secure seal around the pipe.

This AquaDam® was continually filled on and off throughout the night.