The following IDF is given for Baltimore,

$($a$)$ Develop a triangular $10-$yr design storm hyetograph for a $300$ acre$-$ watershed having a $2hr$ time of concentration. Use $\frac{T_p}{D}=0\mathrm{.}40.$

$($b$)$ Develop the blocked IDF $10-$yr storm hyetograph using the balanced method.

Discuss the differences between the two hyetograph, especially noting the difference effects they would have on runoff hydrograph.