Lost Creek has a rectangular channel 2 mi in length (10,560 ft) with a wooden bridge in the middle of this reach (x = 5280 ft.) The channel is dredged earth (n = 0.025) with a bottom with of 200 ft and a bed slope of 0.001. The computed 100-yr peak flow is 10,000 cfs for the entire 2-mi reach.
(a) Compute the normal depth.
(b) Compute the critical depth.