(b) A vertical sluice gate with an opening of 0.67 m produces a downstream jet with a depth of 0.4 m when installed along a rectangular channel, 0.5 m wide, conveying a steady discharge of 20 m3/sec. It is assumed that the flow downstream of the gate eventually returns to a uniform flow depth of 2.5 m. (1) Calculate the energy-head loss in the jump. (ii) What are the conjugate depths of this hydraulic jump (initial and sequent depths).

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Spillway design

A spillway is the overflow portion of the dam that carries the surplus discharge flow from the reservoir to the downstream, that is, it carries the flood water safely downstream, which is enough to be stored in that reservoir. Therefore, it acts as a safety valve for the dam because many failures of the dam arise due to the incorrect design of the spillway.