Using the below hints solve the question Start by creating the storage, discharge table as belowy $($ft$)|$ Q $($cfs$)|$ S $($ac$-$ft$)|$S $($cfs$-$hr$)|(2$S$/$Dt$)+$S $($cfs$)|$

$2)$ Assume values for y$($ft$),$ let's start from $0$ and go up to $5$ in $0\mathrm{.}2$ increments.

$3)$ For S $($cfs$-$hr$),$ calculated S $($ac$-$ft$)$ from the given equation and then multiply by $12$hrs$.$

$4)$ Dt is $12$hrs$.$

$5)$ Once you create this table then you can create the second table as you have done beforeTime $($hr$)|$ Inflow $($cfs$)|11+12|(2$S$/$Dt$)+$S$($cfs$)|$Q $($cfs$)|(25/$Dt$)-$S $($cfs$)|$

An inflow hydrograph is given for a reservoir that has a weir spillway outflow structure. The flow through the spillway is governed by the equation,

$Q=3\mathrm{.}75L{y}^{\frac{3}{2}}(cfs)$

Where $L$ is the length of the weir and $y$ is the heigh of the water above the spillway crest. The storage in the reservoir is governed by$,$

$S=300y(ac-ft)$

Using $t=12hrs,L=15ft$ and $S_0=Q_0=0,$ route the inflow hydrograph through the reservoir using the Storage Indication $(($Modified Puls$))$ Method.

$\backslash$table$[[$Time $($hr$),$Inflow $($cfs$)],[12,40],[24,35],[36,37],[48,125],[60,340],[72,575],[84,722],[96,740],[108,673],[120,456],[132,250],[144,140],[156,10]]6)$ Interpolate as needed to complete the table