The NRCS $($SCS$)$ Method is used to estimate the direct nunoff from a $2-$hr rainfall eveat with $4$ in$.$ of total precipitation depth ofer a $25-$acre watenhed The area is composed of hydrotogic wil gac C with a Revilential arcas of $0\mathrm{.}2ha(0\mathrm{.}5ac)$ lot sizes and $25\%$ impenious. Coosider that the anablesis is required for an antevedent moisture condition of the matonhed soil before the eveat to be under the saturated condition.

Determine $($sbowing equations, your computations and corroponding units$)$: Pars.

a$.$ Cune number for that materohed area for average moisture condition.

b$.$ Corresponding cune number for total watershed area under caturated AMC conditions.

c$.$ Estimate the following terms in your total $1-$hr storm rainfall event under saturated AMC:

Estimated potential maximum retention of the total watershed $($ia$).$

Initial ahotractions estimated by this method for the total watenhed $($in$.).$

Total Surface Runoff depth of the total watershed $($in$.).$

Part $2.$

a$.$ Now the storm cvent is spliced by the three $(3)$ periods of $0\mathrm{.}657$ hour $(40$ minutes$)$ increments as shown in the following table in order to analyze and sompote the dimet ranof incrnmeat rainfall excess depth $($in$.),$ and its corresponding infiltration depth increment during each period $($in$.).($Fill the table completely by showing all equations, computations and units$).$

$\backslash$table$[[(1)=$ data,$(2)=(2),(3)=$ data,$(4)=$ data,$(5)=,(6)=,(7)=,(8)=,(9)=$