A shallow wide river 1500 m wide has a flow of 3000 m3/sec with a velocity of 1.5 m/sec. Manning's (n) for the river is 0.025. If a hydraulic model with vertical scale 1:40 and horizontal scale of 1:800, is to be built, what would be the Manning's 'n' for the model?

An engineer will model this flow of water as steady and inviscid. The parameters are Q = 0.14 m³/min and A = 12 cm². What is the depth h in cm? (a) 3 (b) 5 (c) 8 (d) 10 (e) 19 Q h

A triangular threshold is used to control the water depth which tends to be constant upstream of an open channel. Water flows on a V-notch weir with = 90^o and the magnitude of gravity is 9.81 m/s^2. What is the water discharge upstream of the threshold when conditions are normal with a water level of 0.24 m and during a flood with a water level of 1 m?

An open canal of rectangular cross-section with horizontal base and vertical sides is built through earth of ordinary surface. The canal is 6.5m deep and 8m wide, while the slope of bed is 1 in 791. What will be the discharging capacity using Kutter’s formula?