$$\sum f(x) = F(x) + g(x)$$

$$A_{sv} = (A_{sd} * Sn_w) - I_{vol}$$

Where$A_{sv}$ = Average snowmelt volume (depth/unit area) $$A_{sd}$$ = Average snowpack depth at the initiation of the snowmelt period $$Sn_w$$ = Typical snowpack water at time of melt $$I_{vol}$$ = Estimated infiltration volume likely to occur during a 10-day melt period.