Classify the bed slopes (mild, critical, steep) of the channels of the following problems:...

Classify the bed slopes (mild, critical, steep) of the channels of the following problems: (a) Problem 1, (b) Problem 2, and (c) Problem 3.

Problem 1

The Colorado River System Aqueduct has the cross section shown in Figure. When the water in the aqueduct is 10.2 ft deep, flow is measured as 1600 cfs. If n = 0.014, what is S0 in (a) ft/ft and (b) ft/mi?

Figure

Problem 2

Water is flowing at a rate of 900 cfs in a trapezoidal open channel. Given that S0 = 0.001, n = 0.015, bottom width b = 20 ft, and the side slopes are 1:1.5, what is the normal depth yn?

Problem 3

Find the normal depth yn for the triangular channel shown in Figure if S0 = 0.0005 m/m, Q = 40 m3/s, and n = 0.030.

Figure