Ski jump buckets are very popular type of energy dissipators for dam spillways. These ski jump buckets are provided where the tailwater levels downstream of the spillway are such low that stilling basins type of energy dissipator cannot be provided. The design of ski jump bucket for a spillway of a dam is very complex in nature, as it involves hydraulic variables such as discharge intensity, head over the spillway, lip angle, lip elevation, full reservoir level, tailwater level, velocity head of jet at bucket lip, bucket radius and frictional losses. Himalayan dams are mainly run- of- river schemes mainly meant for hydropower generation and where poundages are minimum and also serve dual purposes of disposing of flood and sediments. Many of Himalayan dam sluice spillways are provided with ski jump buckets as energy dissipators. Sometimes ski jump buckets are provided when the tailwater levels are higher and bucket lip is provided under submerged condition. Computing jet trajectory length and trajectory height of ski jump bucket is important as the throw distance play a decisive role in fixing downstream structures like downstream cofferdam, tailrace outfalls, diversion tunnels, etc. Also, throw height computation is important to factor in fixing the heights of divider walls and training walls of the spillway. Various empirical formulae are available in the literature for finding out the throw distance of trajectory buckets. But hydraulic model studies play a crucial role in assessing the performance of ski jump buckets. The hydraulic model is the best tool to design or modify the spillways and energy dissipators by making the model run for different discharges and gate operation schedules prior to the construction of project. In this papers authors