Question $3$

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$)],[12,40],[24,35],[36,37],[48,125],[60,340],[72,575],[84,722],[96,740],[108,673],[120,456],[132,250],[144,140],[156,10]]$