What volume is represented by 268 inches of runoff from a ba

What volume is represented by 2.68 inches of runoff from a basin of 271 mi? Give answer in cubic feet, cfs-day, acre-feet, and millions of cubic meters.

Solution

feet³ = (2.68/12)*(271*2.788*10⁷)= 1687390533 ft³

acre feet = (2.68/12)*640= 142.9 acre feet

millions of cubic meters = 47.8 M m³