Question

In a rectangular channel 3m wide the depth of flow is 1.3m and the velocity is 1.6m/s. At a hydraulic structure 1.24 m3/s of discharge is withdrawn and the canal width is reduced to 2.5m. The depth of flow in this section at a velocity of 1.5 m/s is

Answer 1

Q1=(1.3*3)*1.6=6.24 m^3/s
6.24-1.24=5=Q2=(2.5*d)*1.5
d=1.33m