## Flow Rate

What is the flow rate (cfs) of a 30-acre parcel of land that has a rainfall intensity of 1.25 in./hr, and a rational method runoff coefficient
$$C$$
of 0.11?

##
__
__**Hint**

**Hint**

$$$Q=CIA$$$

where
$$Q$$
is the peak discharge,
$$C$$
is the runoff coefficient,
$$I$$
is the rainfall intensity, and
$$A$$
is the watershed area in acres.

##
__
__**Hint 2**

**Hint 2**

Solve for peak discharge.

Rational Formula:

$$$Q=CIA$$$

where
$$Q$$
is the peak discharge,
$$C$$
is the runoff coefficient,
$$I$$
is the rainfall intensity, and
$$A$$
is the watershed area in acres. Thus,

$$$Q=(0.11)(1.25\:in/hr)(30\:acres)$$$

$$$Q=4.125\:ft^3/sec$$$

$$$4.125\:ft^3/sec$$$