The parameters for Horton's infiltration model are:

initial infiltration rate $=3$ in $\frac{?}{hr}$

final infiltration rate $=0\mathrm{.}5i\frac{n}{h}r$

$k=4h{r}^{-1}$

recovery coefficient $k_r=0\mathrm{.}25h{r}^{-1}$

Two back to back storms occur with intensity and duration as given by:

$\backslash$table$[[$Time $($hr$),$Intensity $($in$/$hr$)],[0-1,2\mathrm{.}0],[4-7,1\mathrm{.}0]]$

Calculate the infiltration rate and cumulative infiltration in $0\mathrm{.}25hr$ increments up to the end of the second storm.