Sketch GVF problems 1.A 9.0 m wide rectangular channel has its longitudinal bed profile shown below. The Manning’s roughness n = 0.014. (a) Find flow discharge obtained from the upstream lake. (b) Determine whether a hydraulic jump happens and identify in which reach it happens. (c) Sketch water surface profiles and label them with corresponding curve types. El. 30.5 m Lake El. 28.3 m So= = 0.005 El. elevation above datum El. 26.8 m So = 0.001 El. 27.4 m 7 Lake El. 25.3 m