To gain a basic understanding of a watershed$$s function, imagine that you examined data collected during one rain storm. Using the Thiessen method and three rain gauges around the watershed, you find that the Effective Uniform Depth $($EUD$)$ of precipitation $($P$)$ for the watershed is $3\mathrm{.}9$ inches $($see lecture $3$ if you've forgotten definition of EUD$).$ The area of the catchment is $7$ km$2($if you do the unit conversion, this turns out to be $1\mathrm{.}091010$ inches$2).$

A$)$ Initially, the catchment is completely forested, with a curve number of $40.$

Use the curve number method to estimate the $$maximum storage$$ S$,$ in inches.

B$)$ Estimate the runoff Q$,$ in inches, using the SCS Curve Number Method.

$$C$)$ Calculate the total water volume that runs off the entire catchment, in cubic inches.