Water flows at Q=10m^3/s in a rectangular channel of width Bw=5.5m. The slope of the channel So=.15% and the Manning n=.038. Estimate the depth y2=100m upstream of a section where the flow depth y1=2.2m Using a) the direct integration method and b) the standard step method. Approximately how far upstream of this section would you expect to find uniform flow?