Water flows in a trapezoidal channel with side slope 1V:3H, bottom width of 16ft and water depth of 4.5ft. The channel bottom drops 0.1ft every 100ft. Length, n=0.015 Compute the flow rate in ft3/s (using Manning) 386.32 683.22 386.23 862.32

Highway drainage is the process of extracting and regulating the excess surface water on the pavement by giving the desired slope. The construction of a highway drain helps to divert the water present on the surface, and sub-grade by the means of slope. …