$(20)$ Using the NRCS $($or Curve Number$)$ method, determine the runoff depth $($or "excess rain"$)$ for a $24-$hr$,100-$yr rainfall of $7$ in for antecedent soil$-$moisture condition II$,$ with the following land uses and soil groups:

$\backslash$table$[[$Area Fraction,Land Use$/$Condition$,$Soil Group$],[0\mathrm{.}40,$Meadow: good condition,D$],[0\mathrm{.}25,$Wooded: poor cover,C$],[0\mathrm{.}20,$Open space: good condition,D$],[0\mathrm{.}15,$Residential $-$ac lots$),$C$]]$