Question

Consider a site that is I percent impervious, the curve number of the impervious area is 98, and the
curve number of the pervious area is CNp. If all of the impervious area is directly connected to the
drainage system, show that the composite curve number is given by ??? = ??? + ?/100(98 − ???)

Answer 1

ANSWER

Given that

The curve number of the impervious area is = 98

the curve number of the pervious area = CNp