Problem $1$: $60\backslash \%.$ Watershed $"\backslash ($ A $\backslash )"$ has the $15-$minutes unit hydrograph ordinates as:

Compute the area of the watershed based on the UH ordinates.

Consider that there are $5$ rainfall pulses every $15$ minutes as follows: $\backslash (0\mathrm{.}5,1\mathrm{.}0,0,1\mathrm{.}2,0\mathrm{.}3\backslash )($all in inches$).$ Compute the effective rainfall $($or excess rainfall$)$ for the five rainfall pulses using:

a$)$ The $\backslash (\backslash$phi $\backslash )-$index method and assume that $\backslash (\backslash$phi $\backslash )$ is equal to $0\mathrm{.}4$ inch per hour.

b$)$ The SCS method, assume $\backslash (\backslash$mathrm$\{$CN$\}=88\backslash ).$

After you obtain the effective rainfall from each method, predict the Direct Runoff Hydrodraph as done in the Excel file. Plot the results of the DRH$.$

Assume that the base flow is $40$ cfs $,$ provide the total outflow hydrograph.