2016 – Lenthall Dam Crest Gates – From Agony to Relief

Amanda Ament, Thomas Ewing, Frank Nitzsche

The automatic operating buoyancy type spillway gates at Lenthall Dam did not operate properly since installation. This paper discusses the problems encountered, the investigation conducted using computational fluid dynamics to quantify the problems and develop solutions. It describes the design of the modifications to the gate and flow regime and results after construction.

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