A rectangular concrete channel (n = 0.013) has a slope of 0.002. The width of the channel is 3.05m wide and is carrying a discharge of 14.16 m3 /s. Water in the channel flows over a broad crest weir where at the upstream end of the weir the water depth is 2.13 m. Determine the water surface profile type (backwater or tailwater) and state whether it is a $1, $2, 53, M1 M2 or M3 profile. Calculate the number of segments to be used