1. Calculate peak runoff using the Rational Method for the drainage basin shown in Figure 10-26 for a 25-year storm. The basin is located in Orange County, California. 2. Compute the runoff hydrograph...

1. Calculate peak runoff using the Rational Method for the drainage basin shown in Figure 10-26 for a 25-year storm. The basin is located in Orange County, California.

2. Compute the runoff hydrograph for a 50-year storm for a drainage basin located in Tulsa, Oklahoma, having the following parameters:

A_m
 0.892 s.m.

 CN
 66.0

t_c

 1.35 hours