On the upstream side, the team used precast stay-in-place concrete form panels — typically measuring  by  with a thickness of 5 inches (488×198&times13cm) — to define the face of the dam. The inside face of each of these panels is lined with an impervious geomembrane.
On the upstream side, the team used precast stay-in-place concrete form panels, which were typically  by , and had a thickness of 5 inches (488×198&times13 cm), to delineate the dam's face. The inner surface of each panel was lined with an impermeable geomembrane.