The flow at the end of a 30-m-long side channel spillway is 36.0 m3/sec. A 30-m-long overflow spillway, which is under a head of 0. 736 m, contributes the flow to the side-channel spillway. If the side channel has a bottom width of 3 m (n = 0.020) and a bottom slope of 0.01, what is the depth l 0 m upstream from the end of the channel (where if passes through critical depth)?