Using MathCAD and EXCEL solve Prob. $2\mathrm{.}22($Ans: $58$;$16\mathrm{.}05hr$;$17\mathrm{.}55hr$;$29\mathrm{.}31hr$;

$2,758cfs.$

$2\mathrm{.}22$ Sketch the SCS triangular and curvilinear UHs and the mass curve for a $100-m{i}^2$

watershed which is $60\%$ good condition meadow and $40\%$ good cover forest land.

The watershed consists of $70\%$ soil group $C$ and $30\%$ soil group $A.$ The average

slope is $100f\frac{t}{m}i,$ the rainfall duration is $3hr,$ and the length to divide is $18mi.$