Once in position, the 5' high AquaDam® was tied off to the larger one, and filling began in the smaller dam.   

The 8' high AquaDam® had strips of woven material sewn into the seams specifically so that things could be attached. This picture shows a closer shot of the tie point.

Both AquaDams® were filling nicely.

The 5' high AquaDam® was firm enough to sit on.