The energy head over the following dam spillway is 2.5 m. (a) What is the flow rate over the spillway if the discharge coefficient is equal to Ca = 0.738.

(b) Calculate the sequent depths and the energy loss caused by the hydraulic jump that is shaped at the stilling basin downstream of the dam. Energy loss within the spillway is about 3% of the velocity head (V2 1/2g).