The cross-sectional area of a channel can be computed aswhere B = the total channel width...

The cross-sectional area of a channel can be computed as

where B = the total channel width (m), H = the depth (m), and y = distance from the bank (m). In a similar fashion, the average flow Q (m3/s) can be computed as

where U = water velocity (m/s). Use these relationships and a numerical method to determine Ac and Q for the following data: