Using the Modified Puls Method, calculate the outflow hydrograph if $$t $=10$ min, the inflow

hydrograph is given by below and the weir equation is

$=(2$

$3)2(0)1\mathrm{.}5$

Assume Ce $=0\mathrm{.}7,$ h$0=4\mathrm{.}5$ ft$,$ g is the gravitational acceleration and L $=15$ ft$.$

h $($ft$)$ Volume $($ ft$3)$

$00$

$16,770$

$215,150$

$325,400$

$437,360$

$4\mathrm{.}544,850$

$551,450$

$5\mathrm{.}559,170$

$667,250$

$6\mathrm{.}575,300$

$784,100$

Time $($min$)$ Inflow $($cfs$)$

$00$

$1020$

$2040$

$3060$

$4050$

$5040$

$6030$

$7020$

$8010$

$900$