A flow of 100 mgd is to be developed from a 190-mi^2 watershed. At the flow line the area's reservoir is estimated to cover 3900 acres. The annual rainfall is 40 in. the annual runoff is 14 in. and the annual evaporation is 49 in.
1. Find the net gain or loss in storage this represents.
2. Calculate the volume of water evaporated in acre* ft and cubic meters.