Abstract: A crest gate for a dam spillway has a plurality of pivotably mounted panels provided end-to-end across the spillway structure and each hinge joint is a flexible neoprene strip. Strips are also provided between adjacent panels for sealing the spaces between panels. These panels are raised by inflatable elongated tubular bladders secured to the spillway by a harness. The hinge strip and harness are secured in place by common clamping means.