This research studies about the hydraulic performance and and the problem solving alternatives of spillway design at Fila Tukutaha Dam, Alor District Indonesia. Flow water passing over the spillway of a dam typically has a large amount of energy, must be dissipated safely before the floodwaters rejoin to the natural river system. Therefore, energy dissipation takes place at the downstream end of the chuteway. The stilling basin at the end of the chute way is commonly used to dissipate energy

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... m the spillway and slow the water velocity to protect the downstream river channel from erosion and damage. The methodology of experiment consists of physical modeling in the Hydraulic and