Using the data listed below, compute an inflow hydrograph using the Modified Rational Method.

The runoff hydrograph is a triangular hydrograph with base equal to $2\mathrm{.}67t_c.$ Route the inflow

hydrograph through the detention basin described below. Find the peak inflow and outflow

values.

Inflow Hydrograph

Drianage area $=5\mathrm{.}0$ acres

$c=0\mathrm{.}30$

$t_c=15$min.

$i=6\mathrm{.}6i\frac{n}{h}$

Detention Basin