Chapter 2, Problem 21P

Manning's equation can be used to compute the velocity of water in a rectangular open channel,

$U=\frac{\sqrt{S}}{n}{\left(\frac{BH}{B+2H}\right)}^{2/3}$

where $U=$ velocity $\left(\text{m/s}\right)$, $S=$ channel slope, $n=$ roughness coefficient, $B=$ width $\left(\text{m}\right)$, and $H=$ depth $\left(\text{m}\right)$. The following data are available for five channels:

n	s	B	H
0.35	0.0001	10	2
0.020	0.0002	8	1
0.015	0.0010	20	1.5
0.030	0.0007	24	3
0.022	0.0003	15	2.5

Write a well-structured program that computes the velocity for each of these channels. Have the program display the input data along with the computed velocity in tabular form where velocity is the fifth column. Include headings on the table to label the columns.